; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=debugify,loop-idiom -mtriple=x86_64 -mcpu=corei7 < %s -S | FileCheck --check-prefixes=CHECK,NOLZCNT %s
; RUN: opt -passes=debugify,loop-idiom -mtriple=x86_64 -mcpu=core-avx2 < %s -S | FileCheck --check-prefixes=CHECK,LZCNT %s
; RUN: opt -passes=debugify,loop-idiom -mtriple=x86_64 -mcpu=corei7 < %s -S --try-experimental-debuginfo-iterators | FileCheck --check-prefixes=CHECK,NOLZCNT %s
declare void @escape_inner(i8, i8, i8, i1, i8)
declare void @escape_outer(i8, i8, i8, i1, i8)
declare i8 @gen.i8()
; Most basic pattern; Note that iff the shift amount is offset, said offsetting
; must not cause an overflow, but `add nsw` is fine.
define i8 @p0(i8 %val, i8 %start, i8 %extraoffset) mustprogress {
; NOLZCNT-LABEL: @p0(
; NOLZCNT-NEXT: entry:
; NOLZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG20:![0-9]+]]
; NOLZCNT: loop:
; NOLZCNT-NEXT: [[IV:%.*]] = phi i8 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG21:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[IV]], [[META9:![0-9]+]], !DIExpression(), [[DBG21]])
; NOLZCNT-NEXT: [[NBITS:%.*]] = add nsw i8 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG22:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[NBITS]], [[META11:![0-9]+]], !DIExpression(), [[DBG22]])
; NOLZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL:%.*]], [[NBITS]], !dbg [[DBG23:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META12:![0-9]+]], !DIExpression(), [[DBG23]])
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i8 [[VAL_SHIFTED]], 0, !dbg [[DBG24:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META13:![0-9]+]], !DIExpression(), [[DBG24]])
; NOLZCNT-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1, !dbg [[DBG25:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META14:![0-9]+]], !DIExpression(), [[DBG25]])
; NOLZCNT-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i8 [[IV_NEXT]]), !dbg [[DBG26:![0-9]+]]
; NOLZCNT-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG27:![0-9]+]]
; NOLZCNT: end:
; NOLZCNT-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV]], [[LOOP]] ], !dbg [[DBG28:![0-9]+]]
; NOLZCNT-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG29:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG30:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG31:![0-9]+]]
; NOLZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG32:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[IV_RES]], [[META15:![0-9]+]], !DIExpression(), [[DBG28]])
; NOLZCNT-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META16:![0-9]+]], !DIExpression(), [[DBG29]])
; NOLZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META17:![0-9]+]], !DIExpression(), [[DBG30]])
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META18:![0-9]+]], !DIExpression(), [[DBG31]])
; NOLZCNT-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META19:![0-9]+]], !DIExpression(), [[DBG32]])
; NOLZCNT-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG33:![0-9]+]]
; NOLZCNT-NEXT: ret i8 [[IV_RES]], !dbg [[DBG34:![0-9]+]]
;
; LZCNT-LABEL: @p0(
; LZCNT-NEXT: entry:
; LZCNT-NEXT: [[VAL_NUMLEADINGZEROS:%.*]] = call i8 @llvm.ctlz.i8(i8 [[VAL:%.*]], i1 false), !dbg [[DBG20:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS:%.*]] = sub nuw nsw i8 8, [[VAL_NUMLEADINGZEROS]], !dbg [[DBG20]]
; LZCNT-NEXT: [[TMP0:%.*]] = sub i8 0, [[EXTRAOFFSET:%.*]], !dbg [[DBG21:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS_OFFSET:%.*]] = add nsw i8 [[VAL_NUMACTIVEBITS]], [[TMP0]], !dbg [[DBG20]]
; LZCNT-NEXT: [[IV_FINAL:%.*]] = call i8 @llvm.smax.i8(i8 [[VAL_NUMACTIVEBITS_OFFSET]], i8 [[START:%.*]]), !dbg [[DBG20]]
; LZCNT-NEXT: [[LOOP_BACKEDGETAKENCOUNT:%.*]] = sub nsw i8 [[IV_FINAL]], [[START]], !dbg [[DBG20]]
; LZCNT-NEXT: [[LOOP_TRIPCOUNT:%.*]] = add nuw nsw i8 [[LOOP_BACKEDGETAKENCOUNT]], 1, !dbg [[DBG20]]
; LZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG21]]
; LZCNT: loop:
; LZCNT-NEXT: [[LOOP_IV:%.*]] = phi i8 [ 0, [[ENTRY:%.*]] ], [ [[LOOP_IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG20]]
; LZCNT-NEXT: [[LOOP_IV_NEXT]] = add nuw nsw i8 [[LOOP_IV]], 1, !dbg [[DBG22:![0-9]+]]
; LZCNT-NEXT: [[LOOP_IVCHECK:%.*]] = icmp eq i8 [[LOOP_IV_NEXT]], [[LOOP_TRIPCOUNT]], !dbg [[DBG22]]
; LZCNT-NEXT: [[IV:%.*]] = add nsw i8 [[LOOP_IV]], [[START]], !dbg [[DBG22]]
; LZCNT-NEXT: #dbg_value(i8 [[IV]], [[META9:![0-9]+]], !DIExpression(), [[DBG20]])
; LZCNT-NEXT: [[NBITS:%.*]] = add nsw i8 [[IV]], [[EXTRAOFFSET]], !dbg [[DBG22]]
; LZCNT-NEXT: #dbg_value(i8 [[NBITS]], [[META11:![0-9]+]], !DIExpression(), [[DBG22]])
; LZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL]], [[NBITS]], !dbg [[DBG23:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META12:![0-9]+]], !DIExpression(), [[DBG23]])
; LZCNT-NEXT: #dbg_value(i1 [[LOOP_IVCHECK]], [[META13:![0-9]+]], !DIExpression(), [[META24:![0-9]+]])
; LZCNT-NEXT: [[IV_NEXT:%.*]] = add i8 [[IV]], 1, !dbg [[DBG25:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META14:![0-9]+]], !DIExpression(), [[DBG25]])
; LZCNT-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[LOOP_IVCHECK]], i8 [[IV_NEXT]]), !dbg [[DBG26:![0-9]+]]
; LZCNT-NEXT: br i1 [[LOOP_IVCHECK]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG27:![0-9]+]]
; LZCNT: end:
; LZCNT-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV_FINAL]], [[LOOP]] ], !dbg [[DBG28:![0-9]+]]
; LZCNT-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG29:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG30:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[LOOP_IVCHECK]], [[LOOP]] ], !dbg [[DBG31:![0-9]+]]
; LZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG32:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[IV_RES]], [[META15:![0-9]+]], !DIExpression(), [[DBG28]])
; LZCNT-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META16:![0-9]+]], !DIExpression(), [[DBG29]])
; LZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META17:![0-9]+]], !DIExpression(), [[DBG30]])
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META18:![0-9]+]], !DIExpression(), [[DBG31]])
; LZCNT-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META19:![0-9]+]], !DIExpression(), [[DBG32]])
; LZCNT-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG33:![0-9]+]]
; LZCNT-NEXT: ret i8 [[IV_RES]], !dbg [[DBG34:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i8 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = add nsw i8 %iv, %extraoffset
%val.shifted = ashr i8 %val, %nbits
%val.shifted.iszero = icmp eq i8 %val.shifted, 0
%iv.next = add i8 %iv, 1
call void @escape_inner(i8 %iv, i8 %nbits, i8 %val.shifted, i1 %val.shifted.iszero, i8 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i8 [ %iv, %loop ]
%nbits.res = phi i8 [ %nbits, %loop ]
%val.shifted.res = phi i8 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i8 [ %iv.next, %loop ]
call void @escape_outer(i8 %iv.res, i8 %nbits.res, i8 %val.shifted.res, i1 %val.shifted.iszero.res, i8 %iv.next.res)
ret i8 %iv.res
}
; `add nuw` is also fine.
define i8 @p1(i8 %val, i8 %start, i8 %extraoffset) mustprogress {
; NOLZCNT-LABEL: @p1(
; NOLZCNT-NEXT: entry:
; NOLZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG47:![0-9]+]]
; NOLZCNT: loop:
; NOLZCNT-NEXT: [[IV:%.*]] = phi i8 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG48:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[IV]], [[META37:![0-9]+]], !DIExpression(), [[DBG48]])
; NOLZCNT-NEXT: [[NBITS:%.*]] = add nuw i8 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG49:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[NBITS]], [[META38:![0-9]+]], !DIExpression(), [[DBG49]])
; NOLZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL:%.*]], [[NBITS]], !dbg [[DBG50:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META39:![0-9]+]], !DIExpression(), [[DBG50]])
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i8 [[VAL_SHIFTED]], 0, !dbg [[DBG51:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META40:![0-9]+]], !DIExpression(), [[DBG51]])
; NOLZCNT-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1, !dbg [[DBG52:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META41:![0-9]+]], !DIExpression(), [[DBG52]])
; NOLZCNT-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i8 [[IV_NEXT]]), !dbg [[DBG53:![0-9]+]]
; NOLZCNT-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG54:![0-9]+]]
; NOLZCNT: end:
; NOLZCNT-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV]], [[LOOP]] ], !dbg [[DBG55:![0-9]+]]
; NOLZCNT-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG56:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG57:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG58:![0-9]+]]
; NOLZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG59:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[IV_RES]], [[META42:![0-9]+]], !DIExpression(), [[DBG55]])
; NOLZCNT-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META43:![0-9]+]], !DIExpression(), [[DBG56]])
; NOLZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META44:![0-9]+]], !DIExpression(), [[DBG57]])
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META45:![0-9]+]], !DIExpression(), [[DBG58]])
; NOLZCNT-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META46:![0-9]+]], !DIExpression(), [[DBG59]])
; NOLZCNT-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG60:![0-9]+]]
; NOLZCNT-NEXT: ret i8 [[IV_RES]], !dbg [[DBG61:![0-9]+]]
;
; LZCNT-LABEL: @p1(
; LZCNT-NEXT: entry:
; LZCNT-NEXT: [[VAL_NUMLEADINGZEROS:%.*]] = call i8 @llvm.ctlz.i8(i8 [[VAL:%.*]], i1 false), !dbg [[DBG47:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS:%.*]] = sub nuw nsw i8 8, [[VAL_NUMLEADINGZEROS]], !dbg [[DBG47]]
; LZCNT-NEXT: [[TMP0:%.*]] = sub i8 0, [[EXTRAOFFSET:%.*]], !dbg [[DBG48:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS_OFFSET:%.*]] = add nsw i8 [[VAL_NUMACTIVEBITS]], [[TMP0]], !dbg [[DBG47]]
; LZCNT-NEXT: [[IV_FINAL:%.*]] = call i8 @llvm.smax.i8(i8 [[VAL_NUMACTIVEBITS_OFFSET]], i8 [[START:%.*]]), !dbg [[DBG47]]
; LZCNT-NEXT: [[LOOP_BACKEDGETAKENCOUNT:%.*]] = sub nsw i8 [[IV_FINAL]], [[START]], !dbg [[DBG47]]
; LZCNT-NEXT: [[LOOP_TRIPCOUNT:%.*]] = add nuw nsw i8 [[LOOP_BACKEDGETAKENCOUNT]], 1, !dbg [[DBG47]]
; LZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG48]]
; LZCNT: loop:
; LZCNT-NEXT: [[LOOP_IV:%.*]] = phi i8 [ 0, [[ENTRY:%.*]] ], [ [[LOOP_IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG47]]
; LZCNT-NEXT: [[LOOP_IV_NEXT]] = add nuw nsw i8 [[LOOP_IV]], 1, !dbg [[DBG49:![0-9]+]]
; LZCNT-NEXT: [[LOOP_IVCHECK:%.*]] = icmp eq i8 [[LOOP_IV_NEXT]], [[LOOP_TRIPCOUNT]], !dbg [[DBG49]]
; LZCNT-NEXT: [[IV:%.*]] = add nsw i8 [[LOOP_IV]], [[START]], !dbg [[DBG49]]
; LZCNT-NEXT: #dbg_value(i8 [[IV]], [[META37:![0-9]+]], !DIExpression(), [[DBG47]])
; LZCNT-NEXT: [[NBITS:%.*]] = add nuw i8 [[IV]], [[EXTRAOFFSET]], !dbg [[DBG49]]
; LZCNT-NEXT: #dbg_value(i8 [[NBITS]], [[META38:![0-9]+]], !DIExpression(), [[DBG49]])
; LZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL]], [[NBITS]], !dbg [[DBG50:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META39:![0-9]+]], !DIExpression(), [[DBG50]])
; LZCNT-NEXT: #dbg_value(i1 [[LOOP_IVCHECK]], [[META40:![0-9]+]], !DIExpression(), [[META51:![0-9]+]])
; LZCNT-NEXT: [[IV_NEXT:%.*]] = add i8 [[IV]], 1, !dbg [[DBG52:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META41:![0-9]+]], !DIExpression(), [[DBG52]])
; LZCNT-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[LOOP_IVCHECK]], i8 [[IV_NEXT]]), !dbg [[DBG53:![0-9]+]]
; LZCNT-NEXT: br i1 [[LOOP_IVCHECK]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG54:![0-9]+]]
; LZCNT: end:
; LZCNT-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV_FINAL]], [[LOOP]] ], !dbg [[DBG55:![0-9]+]]
; LZCNT-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG56:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG57:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[LOOP_IVCHECK]], [[LOOP]] ], !dbg [[DBG58:![0-9]+]]
; LZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG59:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[IV_RES]], [[META42:![0-9]+]], !DIExpression(), [[DBG55]])
; LZCNT-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META43:![0-9]+]], !DIExpression(), [[DBG56]])
; LZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META44:![0-9]+]], !DIExpression(), [[DBG57]])
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META45:![0-9]+]], !DIExpression(), [[DBG58]])
; LZCNT-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META46:![0-9]+]], !DIExpression(), [[DBG59]])
; LZCNT-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG60:![0-9]+]]
; LZCNT-NEXT: ret i8 [[IV_RES]], !dbg [[DBG61:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i8 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = add nuw i8 %iv, %extraoffset
%val.shifted = ashr i8 %val, %nbits
%val.shifted.iszero = icmp eq i8 %val.shifted, 0
%iv.next = add i8 %iv, 1
call void @escape_inner(i8 %iv, i8 %nbits, i8 %val.shifted, i1 %val.shifted.iszero, i8 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i8 [ %iv, %loop ]
%nbits.res = phi i8 [ %nbits, %loop ]
%val.shifted.res = phi i8 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i8 [ %iv.next, %loop ]
call void @escape_outer(i8 %iv.res, i8 %nbits.res, i8 %val.shifted.res, i1 %val.shifted.iszero.res, i8 %iv.next.res)
ret i8 %iv.res
}
; `sub nsw` is also fine.
define i8 @p2(i8 %val, i8 %start, i8 %extraoffset) mustprogress {
; NOLZCNT-LABEL: @p2(
; NOLZCNT-NEXT: entry:
; NOLZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG74:![0-9]+]]
; NOLZCNT: loop:
; NOLZCNT-NEXT: [[IV:%.*]] = phi i8 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG75:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[IV]], [[META64:![0-9]+]], !DIExpression(), [[DBG75]])
; NOLZCNT-NEXT: [[NBITS:%.*]] = sub nsw i8 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG76:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[NBITS]], [[META65:![0-9]+]], !DIExpression(), [[DBG76]])
; NOLZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL:%.*]], [[NBITS]], !dbg [[DBG77:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META66:![0-9]+]], !DIExpression(), [[DBG77]])
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i8 [[VAL_SHIFTED]], 0, !dbg [[DBG78:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META67:![0-9]+]], !DIExpression(), [[DBG78]])
; NOLZCNT-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1, !dbg [[DBG79:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META68:![0-9]+]], !DIExpression(), [[DBG79]])
; NOLZCNT-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i8 [[IV_NEXT]]), !dbg [[DBG80:![0-9]+]]
; NOLZCNT-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG81:![0-9]+]]
; NOLZCNT: end:
; NOLZCNT-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV]], [[LOOP]] ], !dbg [[DBG82:![0-9]+]]
; NOLZCNT-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG83:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG84:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG85:![0-9]+]]
; NOLZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG86:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[IV_RES]], [[META69:![0-9]+]], !DIExpression(), [[DBG82]])
; NOLZCNT-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META70:![0-9]+]], !DIExpression(), [[DBG83]])
; NOLZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META71:![0-9]+]], !DIExpression(), [[DBG84]])
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META72:![0-9]+]], !DIExpression(), [[DBG85]])
; NOLZCNT-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META73:![0-9]+]], !DIExpression(), [[DBG86]])
; NOLZCNT-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG87:![0-9]+]]
; NOLZCNT-NEXT: ret i8 [[IV_RES]], !dbg [[DBG88:![0-9]+]]
;
; LZCNT-LABEL: @p2(
; LZCNT-NEXT: entry:
; LZCNT-NEXT: [[VAL_NUMLEADINGZEROS:%.*]] = call i8 @llvm.ctlz.i8(i8 [[VAL:%.*]], i1 false), !dbg [[DBG74:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS:%.*]] = sub nuw nsw i8 8, [[VAL_NUMLEADINGZEROS]], !dbg [[DBG74]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS_OFFSET:%.*]] = add nsw i8 [[VAL_NUMACTIVEBITS]], [[EXTRAOFFSET:%.*]], !dbg [[DBG74]]
; LZCNT-NEXT: [[IV_FINAL:%.*]] = call i8 @llvm.smax.i8(i8 [[VAL_NUMACTIVEBITS_OFFSET]], i8 [[START:%.*]]), !dbg [[DBG74]]
; LZCNT-NEXT: [[LOOP_BACKEDGETAKENCOUNT:%.*]] = sub nsw i8 [[IV_FINAL]], [[START]], !dbg [[DBG74]]
; LZCNT-NEXT: [[LOOP_TRIPCOUNT:%.*]] = add nuw nsw i8 [[LOOP_BACKEDGETAKENCOUNT]], 1, !dbg [[DBG74]]
; LZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG75:![0-9]+]]
; LZCNT: loop:
; LZCNT-NEXT: [[LOOP_IV:%.*]] = phi i8 [ 0, [[ENTRY:%.*]] ], [ [[LOOP_IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG74]]
; LZCNT-NEXT: [[LOOP_IV_NEXT]] = add nuw nsw i8 [[LOOP_IV]], 1, !dbg [[DBG76:![0-9]+]]
; LZCNT-NEXT: [[LOOP_IVCHECK:%.*]] = icmp eq i8 [[LOOP_IV_NEXT]], [[LOOP_TRIPCOUNT]], !dbg [[DBG76]]
; LZCNT-NEXT: [[IV:%.*]] = add nsw i8 [[LOOP_IV]], [[START]], !dbg [[DBG76]]
; LZCNT-NEXT: #dbg_value(i8 [[IV]], [[META64:![0-9]+]], !DIExpression(), [[DBG74]])
; LZCNT-NEXT: [[NBITS:%.*]] = sub nsw i8 [[IV]], [[EXTRAOFFSET]], !dbg [[DBG76]]
; LZCNT-NEXT: #dbg_value(i8 [[NBITS]], [[META65:![0-9]+]], !DIExpression(), [[DBG76]])
; LZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL]], [[NBITS]], !dbg [[DBG77:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META66:![0-9]+]], !DIExpression(), [[DBG77]])
; LZCNT-NEXT: #dbg_value(i1 [[LOOP_IVCHECK]], [[META67:![0-9]+]], !DIExpression(), [[META78:![0-9]+]])
; LZCNT-NEXT: [[IV_NEXT:%.*]] = add i8 [[IV]], 1, !dbg [[DBG79:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META68:![0-9]+]], !DIExpression(), [[DBG79]])
; LZCNT-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[LOOP_IVCHECK]], i8 [[IV_NEXT]]), !dbg [[DBG80:![0-9]+]]
; LZCNT-NEXT: br i1 [[LOOP_IVCHECK]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG81:![0-9]+]]
; LZCNT: end:
; LZCNT-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV_FINAL]], [[LOOP]] ], !dbg [[DBG82:![0-9]+]]
; LZCNT-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG83:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG84:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[LOOP_IVCHECK]], [[LOOP]] ], !dbg [[DBG85:![0-9]+]]
; LZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG86:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[IV_RES]], [[META69:![0-9]+]], !DIExpression(), [[DBG82]])
; LZCNT-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META70:![0-9]+]], !DIExpression(), [[DBG83]])
; LZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META71:![0-9]+]], !DIExpression(), [[DBG84]])
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META72:![0-9]+]], !DIExpression(), [[DBG85]])
; LZCNT-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META73:![0-9]+]], !DIExpression(), [[DBG86]])
; LZCNT-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG87:![0-9]+]]
; LZCNT-NEXT: ret i8 [[IV_RES]], !dbg [[DBG88:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i8 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = sub nsw i8 %iv, %extraoffset
%val.shifted = ashr i8 %val, %nbits
%val.shifted.iszero = icmp eq i8 %val.shifted, 0
%iv.next = add i8 %iv, 1
call void @escape_inner(i8 %iv, i8 %nbits, i8 %val.shifted, i1 %val.shifted.iszero, i8 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i8 [ %iv, %loop ]
%nbits.res = phi i8 [ %nbits, %loop ]
%val.shifted.res = phi i8 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i8 [ %iv.next, %loop ]
call void @escape_outer(i8 %iv.res, i8 %nbits.res, i8 %val.shifted.res, i1 %val.shifted.iszero.res, i8 %iv.next.res)
ret i8 %iv.res
}
; But `sub nuw` is not fine..
define i8 @n3(i8 %val, i8 %start, i8 %extraoffset) mustprogress {
; CHECK-LABEL: @n3(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]], !dbg [[DBG101:![0-9]+]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG102:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV]], [[META91:![0-9]+]], !DIExpression(), [[DBG102]])
; CHECK-NEXT: [[NBITS:%.*]] = sub nuw i8 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG103:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[NBITS]], [[META92:![0-9]+]], !DIExpression(), [[DBG103]])
; CHECK-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL:%.*]], [[NBITS]], !dbg [[DBG104:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META93:![0-9]+]], !DIExpression(), [[DBG104]])
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i8 [[VAL_SHIFTED]], 0, !dbg [[DBG105:![0-9]+]]
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META94:![0-9]+]], !DIExpression(), [[DBG105]])
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1, !dbg [[DBG106:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META95:![0-9]+]], !DIExpression(), [[DBG106]])
; CHECK-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i8 [[IV_NEXT]]), !dbg [[DBG107:![0-9]+]]
; CHECK-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG108:![0-9]+]]
; CHECK: end:
; CHECK-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV]], [[LOOP]] ], !dbg [[DBG109:![0-9]+]]
; CHECK-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG110:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG111:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG112:![0-9]+]]
; CHECK-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG113:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_RES]], [[META96:![0-9]+]], !DIExpression(), [[DBG109]])
; CHECK-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META97:![0-9]+]], !DIExpression(), [[DBG110]])
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META98:![0-9]+]], !DIExpression(), [[DBG111]])
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META99:![0-9]+]], !DIExpression(), [[DBG112]])
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META100:![0-9]+]], !DIExpression(), [[DBG113]])
; CHECK-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG114:![0-9]+]]
; CHECK-NEXT: ret i8 [[IV_RES]], !dbg [[DBG115:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i8 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = sub nuw i8 %iv, %extraoffset
%val.shifted = ashr i8 %val, %nbits
%val.shifted.iszero = icmp eq i8 %val.shifted, 0
%iv.next = add i8 %iv, 1
call void @escape_inner(i8 %iv, i8 %nbits, i8 %val.shifted, i1 %val.shifted.iszero, i8 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i8 [ %iv, %loop ]
%nbits.res = phi i8 [ %nbits, %loop ]
%val.shifted.res = phi i8 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i8 [ %iv.next, %loop ]
call void @escape_outer(i8 %iv.res, i8 %nbits.res, i8 %val.shifted.res, i1 %val.shifted.iszero.res, i8 %iv.next.res)
ret i8 %iv.res
}
; Likewise, plain `sub` is not fine.
define i8 @n4(i8 %val, i8 %start, i8 %extraoffset) mustprogress {
; CHECK-LABEL: @n4(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]], !dbg [[DBG128:![0-9]+]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG129:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV]], [[META118:![0-9]+]], !DIExpression(), [[DBG129]])
; CHECK-NEXT: [[NBITS:%.*]] = sub i8 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG130:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[NBITS]], [[META119:![0-9]+]], !DIExpression(), [[DBG130]])
; CHECK-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL:%.*]], [[NBITS]], !dbg [[DBG131:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META120:![0-9]+]], !DIExpression(), [[DBG131]])
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i8 [[VAL_SHIFTED]], 0, !dbg [[DBG132:![0-9]+]]
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META121:![0-9]+]], !DIExpression(), [[DBG132]])
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1, !dbg [[DBG133:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META122:![0-9]+]], !DIExpression(), [[DBG133]])
; CHECK-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i8 [[IV_NEXT]]), !dbg [[DBG134:![0-9]+]]
; CHECK-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG135:![0-9]+]]
; CHECK: end:
; CHECK-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV]], [[LOOP]] ], !dbg [[DBG136:![0-9]+]]
; CHECK-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG137:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG138:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG139:![0-9]+]]
; CHECK-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG140:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_RES]], [[META123:![0-9]+]], !DIExpression(), [[DBG136]])
; CHECK-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META124:![0-9]+]], !DIExpression(), [[DBG137]])
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META125:![0-9]+]], !DIExpression(), [[DBG138]])
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META126:![0-9]+]], !DIExpression(), [[DBG139]])
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META127:![0-9]+]], !DIExpression(), [[DBG140]])
; CHECK-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG141:![0-9]+]]
; CHECK-NEXT: ret i8 [[IV_RES]], !dbg [[DBG142:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i8 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = sub i8 %iv, %extraoffset
%val.shifted = ashr i8 %val, %nbits
%val.shifted.iszero = icmp eq i8 %val.shifted, 0
%iv.next = add i8 %iv, 1
call void @escape_inner(i8 %iv, i8 %nbits, i8 %val.shifted, i1 %val.shifted.iszero, i8 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i8 [ %iv, %loop ]
%nbits.res = phi i8 [ %nbits, %loop ]
%val.shifted.res = phi i8 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i8 [ %iv.next, %loop ]
call void @escape_outer(i8 %iv.res, i8 %nbits.res, i8 %val.shifted.res, i1 %val.shifted.iszero.res, i8 %iv.next.res)
ret i8 %iv.res
}
; Likewise, plain `add` is not fine.
define i8 @n5(i8 %val, i8 %start, i8 %extraoffset) mustprogress {
; CHECK-LABEL: @n5(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]], !dbg [[DBG155:![0-9]+]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG156:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV]], [[META145:![0-9]+]], !DIExpression(), [[DBG156]])
; CHECK-NEXT: [[NBITS:%.*]] = add i8 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG157:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[NBITS]], [[META146:![0-9]+]], !DIExpression(), [[DBG157]])
; CHECK-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL:%.*]], [[NBITS]], !dbg [[DBG158:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META147:![0-9]+]], !DIExpression(), [[DBG158]])
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i8 [[VAL_SHIFTED]], 0, !dbg [[DBG159:![0-9]+]]
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META148:![0-9]+]], !DIExpression(), [[DBG159]])
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1, !dbg [[DBG160:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META149:![0-9]+]], !DIExpression(), [[DBG160]])
; CHECK-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i8 [[IV_NEXT]]), !dbg [[DBG161:![0-9]+]]
; CHECK-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG162:![0-9]+]]
; CHECK: end:
; CHECK-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV]], [[LOOP]] ], !dbg [[DBG163:![0-9]+]]
; CHECK-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG164:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG165:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG166:![0-9]+]]
; CHECK-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG167:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_RES]], [[META150:![0-9]+]], !DIExpression(), [[DBG163]])
; CHECK-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META151:![0-9]+]], !DIExpression(), [[DBG164]])
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META152:![0-9]+]], !DIExpression(), [[DBG165]])
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META153:![0-9]+]], !DIExpression(), [[DBG166]])
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META154:![0-9]+]], !DIExpression(), [[DBG167]])
; CHECK-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG168:![0-9]+]]
; CHECK-NEXT: ret i8 [[IV_RES]], !dbg [[DBG169:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i8 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = add i8 %iv, %extraoffset
%val.shifted = ashr i8 %val, %nbits
%val.shifted.iszero = icmp eq i8 %val.shifted, 0
%iv.next = add i8 %iv, 1
call void @escape_inner(i8 %iv, i8 %nbits, i8 %val.shifted, i1 %val.shifted.iszero, i8 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i8 [ %iv, %loop ]
%nbits.res = phi i8 [ %nbits, %loop ]
%val.shifted.res = phi i8 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i8 [ %iv.next, %loop ]
call void @escape_outer(i8 %iv.res, i8 %nbits.res, i8 %val.shifted.res, i1 %val.shifted.iszero.res, i8 %iv.next.res)
ret i8 %iv.res
}
; Of course, we don't have to have an offset
define i8 @p6(i8 %val, i8 %start) mustprogress {
; NOLZCNT-LABEL: @p6(
; NOLZCNT-NEXT: entry:
; NOLZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG180:![0-9]+]]
; NOLZCNT: loop:
; NOLZCNT-NEXT: [[IV:%.*]] = phi i8 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG181:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[IV]], [[META172:![0-9]+]], !DIExpression(), [[DBG181]])
; NOLZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL:%.*]], [[IV]], !dbg [[DBG182:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META173:![0-9]+]], !DIExpression(), [[DBG182]])
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i8 [[VAL_SHIFTED]], 0, !dbg [[DBG183:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META174:![0-9]+]], !DIExpression(), [[DBG183]])
; NOLZCNT-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1, !dbg [[DBG184:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META175:![0-9]+]], !DIExpression(), [[DBG184]])
; NOLZCNT-NEXT: call void @escape_inner(i8 [[IV]], i8 [[IV]], i8 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i8 [[IV_NEXT]]), !dbg [[DBG185:![0-9]+]]
; NOLZCNT-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG186:![0-9]+]]
; NOLZCNT: end:
; NOLZCNT-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV]], [[LOOP]] ], !dbg [[DBG187:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG188:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG189:![0-9]+]]
; NOLZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG190:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[IV_RES]], [[META176:![0-9]+]], !DIExpression(), [[DBG187]])
; NOLZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META177:![0-9]+]], !DIExpression(), [[DBG188]])
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META178:![0-9]+]], !DIExpression(), [[DBG189]])
; NOLZCNT-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META179:![0-9]+]], !DIExpression(), [[DBG190]])
; NOLZCNT-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[IV_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG191:![0-9]+]]
; NOLZCNT-NEXT: ret i8 [[IV_RES]], !dbg [[DBG192:![0-9]+]]
;
; LZCNT-LABEL: @p6(
; LZCNT-NEXT: entry:
; LZCNT-NEXT: [[VAL_NUMLEADINGZEROS:%.*]] = call i8 @llvm.ctlz.i8(i8 [[VAL:%.*]], i1 false), !dbg [[DBG180:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS:%.*]] = sub nuw nsw i8 8, [[VAL_NUMLEADINGZEROS]], !dbg [[DBG180]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS_OFFSET:%.*]] = add nuw nsw i8 [[VAL_NUMACTIVEBITS]], 0, !dbg [[DBG180]]
; LZCNT-NEXT: [[IV_FINAL:%.*]] = call i8 @llvm.smax.i8(i8 [[VAL_NUMACTIVEBITS_OFFSET]], i8 [[START:%.*]]), !dbg [[DBG180]]
; LZCNT-NEXT: [[LOOP_BACKEDGETAKENCOUNT:%.*]] = sub nuw nsw i8 [[IV_FINAL]], [[START]], !dbg [[DBG180]]
; LZCNT-NEXT: [[LOOP_TRIPCOUNT:%.*]] = add nuw nsw i8 [[LOOP_BACKEDGETAKENCOUNT]], 1, !dbg [[DBG180]]
; LZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG181:![0-9]+]]
; LZCNT: loop:
; LZCNT-NEXT: [[LOOP_IV:%.*]] = phi i8 [ 0, [[ENTRY:%.*]] ], [ [[LOOP_IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG180]]
; LZCNT-NEXT: [[LOOP_IV_NEXT]] = add nuw nsw i8 [[LOOP_IV]], 1, !dbg [[DBG182:![0-9]+]]
; LZCNT-NEXT: [[LOOP_IVCHECK:%.*]] = icmp eq i8 [[LOOP_IV_NEXT]], [[LOOP_TRIPCOUNT]], !dbg [[DBG182]]
; LZCNT-NEXT: [[IV:%.*]] = add nsw i8 [[LOOP_IV]], [[START]], !dbg [[DBG182]]
; LZCNT-NEXT: #dbg_value(i8 [[IV]], [[META172:![0-9]+]], !DIExpression(), [[DBG180]])
; LZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL]], [[IV]], !dbg [[DBG182]]
; LZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META173:![0-9]+]], !DIExpression(), [[DBG182]])
; LZCNT-NEXT: #dbg_value(i1 [[LOOP_IVCHECK]], [[META174:![0-9]+]], !DIExpression(), [[META183:![0-9]+]])
; LZCNT-NEXT: [[IV_NEXT:%.*]] = add i8 [[IV]], 1, !dbg [[DBG184:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META175:![0-9]+]], !DIExpression(), [[DBG184]])
; LZCNT-NEXT: call void @escape_inner(i8 [[IV]], i8 [[IV]], i8 [[VAL_SHIFTED]], i1 [[LOOP_IVCHECK]], i8 [[IV_NEXT]]), !dbg [[DBG185:![0-9]+]]
; LZCNT-NEXT: br i1 [[LOOP_IVCHECK]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG186:![0-9]+]]
; LZCNT: end:
; LZCNT-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV_FINAL]], [[LOOP]] ], !dbg [[DBG187:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG188:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[LOOP_IVCHECK]], [[LOOP]] ], !dbg [[DBG189:![0-9]+]]
; LZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG190:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[IV_RES]], [[META176:![0-9]+]], !DIExpression(), [[DBG187]])
; LZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META177:![0-9]+]], !DIExpression(), [[DBG188]])
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META178:![0-9]+]], !DIExpression(), [[DBG189]])
; LZCNT-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META179:![0-9]+]], !DIExpression(), [[DBG190]])
; LZCNT-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[IV_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG191:![0-9]+]]
; LZCNT-NEXT: ret i8 [[IV_RES]], !dbg [[DBG192:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i8 [ %start, %entry ], [ %iv.next, %loop ]
%val.shifted = ashr i8 %val, %iv
%val.shifted.iszero = icmp eq i8 %val.shifted, 0
%iv.next = add i8 %iv, 1
call void @escape_inner(i8 %iv, i8 %iv, i8 %val.shifted, i1 %val.shifted.iszero, i8 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i8 [ %iv, %loop ]
%val.shifted.res = phi i8 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i8 [ %iv.next, %loop ]
call void @escape_outer(i8 %iv.res, i8 %iv.res, i8 %val.shifted.res, i1 %val.shifted.iszero.res, i8 %iv.next.res)
ret i8 %iv.res
}
declare void @escape_inner.i7(i7, i7, i7, i1, i7)
declare void @escape_outer.i7(i7, i7, i7, i1, i7)
; Other bitwidths are fine also
define i7 @p7(i7 %val, i7 %start, i7 %extraoffset) mustprogress {
; NOLZCNT-LABEL: @p7(
; NOLZCNT-NEXT: entry:
; NOLZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG205:![0-9]+]]
; NOLZCNT: loop:
; NOLZCNT-NEXT: [[IV:%.*]] = phi i7 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG206:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i7 [[IV]], [[META195:![0-9]+]], !DIExpression(), [[DBG206]])
; NOLZCNT-NEXT: [[NBITS:%.*]] = add nsw i7 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG207:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i7 [[NBITS]], [[META196:![0-9]+]], !DIExpression(), [[DBG207]])
; NOLZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i7 [[VAL:%.*]], [[NBITS]], !dbg [[DBG208:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i7 [[VAL_SHIFTED]], [[META197:![0-9]+]], !DIExpression(), [[DBG208]])
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i7 [[VAL_SHIFTED]], 0, !dbg [[DBG209:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META198:![0-9]+]], !DIExpression(), [[DBG209]])
; NOLZCNT-NEXT: [[IV_NEXT]] = add i7 [[IV]], 1, !dbg [[DBG210:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i7 [[IV_NEXT]], [[META199:![0-9]+]], !DIExpression(), [[DBG210]])
; NOLZCNT-NEXT: call void @escape_inner.i7(i7 [[IV]], i7 [[NBITS]], i7 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i7 [[IV_NEXT]]), !dbg [[DBG211:![0-9]+]]
; NOLZCNT-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG212:![0-9]+]]
; NOLZCNT: end:
; NOLZCNT-NEXT: [[IV_RES:%.*]] = phi i7 [ [[IV]], [[LOOP]] ], !dbg [[DBG213:![0-9]+]]
; NOLZCNT-NEXT: [[NBITS_RES:%.*]] = phi i7 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG214:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i7 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG215:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG216:![0-9]+]]
; NOLZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i7 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG217:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i7 [[IV_RES]], [[META200:![0-9]+]], !DIExpression(), [[DBG213]])
; NOLZCNT-NEXT: #dbg_value(i7 [[NBITS_RES]], [[META201:![0-9]+]], !DIExpression(), [[DBG214]])
; NOLZCNT-NEXT: #dbg_value(i7 [[VAL_SHIFTED_RES]], [[META202:![0-9]+]], !DIExpression(), [[DBG215]])
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META203:![0-9]+]], !DIExpression(), [[DBG216]])
; NOLZCNT-NEXT: #dbg_value(i7 [[IV_NEXT_RES]], [[META204:![0-9]+]], !DIExpression(), [[DBG217]])
; NOLZCNT-NEXT: call void @escape_outer.i7(i7 [[IV_RES]], i7 [[NBITS_RES]], i7 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i7 [[IV_NEXT_RES]]), !dbg [[DBG218:![0-9]+]]
; NOLZCNT-NEXT: ret i7 [[IV_RES]], !dbg [[DBG219:![0-9]+]]
;
; LZCNT-LABEL: @p7(
; LZCNT-NEXT: entry:
; LZCNT-NEXT: [[VAL_NUMLEADINGZEROS:%.*]] = call i7 @llvm.ctlz.i7(i7 [[VAL:%.*]], i1 false), !dbg [[DBG205:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS:%.*]] = sub nuw nsw i7 7, [[VAL_NUMLEADINGZEROS]], !dbg [[DBG205]]
; LZCNT-NEXT: [[TMP0:%.*]] = sub i7 0, [[EXTRAOFFSET:%.*]], !dbg [[DBG206:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS_OFFSET:%.*]] = add nsw i7 [[VAL_NUMACTIVEBITS]], [[TMP0]], !dbg [[DBG205]]
; LZCNT-NEXT: [[IV_FINAL:%.*]] = call i7 @llvm.smax.i7(i7 [[VAL_NUMACTIVEBITS_OFFSET]], i7 [[START:%.*]]), !dbg [[DBG205]]
; LZCNT-NEXT: [[LOOP_BACKEDGETAKENCOUNT:%.*]] = sub nsw i7 [[IV_FINAL]], [[START]], !dbg [[DBG205]]
; LZCNT-NEXT: [[LOOP_TRIPCOUNT:%.*]] = add nuw nsw i7 [[LOOP_BACKEDGETAKENCOUNT]], 1, !dbg [[DBG205]]
; LZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG206]]
; LZCNT: loop:
; LZCNT-NEXT: [[LOOP_IV:%.*]] = phi i7 [ 0, [[ENTRY:%.*]] ], [ [[LOOP_IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG205]]
; LZCNT-NEXT: [[LOOP_IV_NEXT]] = add nuw nsw i7 [[LOOP_IV]], 1, !dbg [[DBG207:![0-9]+]]
; LZCNT-NEXT: [[LOOP_IVCHECK:%.*]] = icmp eq i7 [[LOOP_IV_NEXT]], [[LOOP_TRIPCOUNT]], !dbg [[DBG207]]
; LZCNT-NEXT: [[IV:%.*]] = add nsw i7 [[LOOP_IV]], [[START]], !dbg [[DBG207]]
; LZCNT-NEXT: #dbg_value(i7 [[IV]], [[META195:![0-9]+]], !DIExpression(), [[DBG205]])
; LZCNT-NEXT: [[NBITS:%.*]] = add nsw i7 [[IV]], [[EXTRAOFFSET]], !dbg [[DBG207]]
; LZCNT-NEXT: #dbg_value(i7 [[NBITS]], [[META196:![0-9]+]], !DIExpression(), [[DBG207]])
; LZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i7 [[VAL]], [[NBITS]], !dbg [[DBG208:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i7 [[VAL_SHIFTED]], [[META197:![0-9]+]], !DIExpression(), [[DBG208]])
; LZCNT-NEXT: #dbg_value(i1 [[LOOP_IVCHECK]], [[META198:![0-9]+]], !DIExpression(), [[META209:![0-9]+]])
; LZCNT-NEXT: [[IV_NEXT:%.*]] = add i7 [[IV]], 1, !dbg [[DBG210:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i7 [[IV_NEXT]], [[META199:![0-9]+]], !DIExpression(), [[DBG210]])
; LZCNT-NEXT: call void @escape_inner.i7(i7 [[IV]], i7 [[NBITS]], i7 [[VAL_SHIFTED]], i1 [[LOOP_IVCHECK]], i7 [[IV_NEXT]]), !dbg [[DBG211:![0-9]+]]
; LZCNT-NEXT: br i1 [[LOOP_IVCHECK]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG212:![0-9]+]]
; LZCNT: end:
; LZCNT-NEXT: [[IV_RES:%.*]] = phi i7 [ [[IV_FINAL]], [[LOOP]] ], !dbg [[DBG213:![0-9]+]]
; LZCNT-NEXT: [[NBITS_RES:%.*]] = phi i7 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG214:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i7 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG215:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[LOOP_IVCHECK]], [[LOOP]] ], !dbg [[DBG216:![0-9]+]]
; LZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i7 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG217:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i7 [[IV_RES]], [[META200:![0-9]+]], !DIExpression(), [[DBG213]])
; LZCNT-NEXT: #dbg_value(i7 [[NBITS_RES]], [[META201:![0-9]+]], !DIExpression(), [[DBG214]])
; LZCNT-NEXT: #dbg_value(i7 [[VAL_SHIFTED_RES]], [[META202:![0-9]+]], !DIExpression(), [[DBG215]])
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META203:![0-9]+]], !DIExpression(), [[DBG216]])
; LZCNT-NEXT: #dbg_value(i7 [[IV_NEXT_RES]], [[META204:![0-9]+]], !DIExpression(), [[DBG217]])
; LZCNT-NEXT: call void @escape_outer.i7(i7 [[IV_RES]], i7 [[NBITS_RES]], i7 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i7 [[IV_NEXT_RES]]), !dbg [[DBG218:![0-9]+]]
; LZCNT-NEXT: ret i7 [[IV_RES]], !dbg [[DBG219:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i7 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = add nsw i7 %iv, %extraoffset
%val.shifted = ashr i7 %val, %nbits
%val.shifted.iszero = icmp eq i7 %val.shifted, 0
%iv.next = add i7 %iv, 1
call void @escape_inner.i7(i7 %iv, i7 %nbits, i7 %val.shifted, i1 %val.shifted.iszero, i7 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i7 [ %iv, %loop ]
%nbits.res = phi i7 [ %nbits, %loop ]
%val.shifted.res = phi i7 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i7 [ %iv.next, %loop ]
call void @escape_outer.i7(i7 %iv.res, i7 %nbits.res, i7 %val.shifted.res, i1 %val.shifted.iszero.res, i7 %iv.next.res)
ret i7 %iv.res
}
; Step must be 1
define i8 @n8(i8 %val, i8 %start, i8 %extraoffset) mustprogress {
; CHECK-LABEL: @n8(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]], !dbg [[DBG232:![0-9]+]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG233:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV]], [[META222:![0-9]+]], !DIExpression(), [[DBG233]])
; CHECK-NEXT: [[NBITS:%.*]] = add nsw i8 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG234:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[NBITS]], [[META223:![0-9]+]], !DIExpression(), [[DBG234]])
; CHECK-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL:%.*]], [[NBITS]], !dbg [[DBG235:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META224:![0-9]+]], !DIExpression(), [[DBG235]])
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i8 [[VAL_SHIFTED]], 0, !dbg [[DBG236:![0-9]+]]
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META225:![0-9]+]], !DIExpression(), [[DBG236]])
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 2, !dbg [[DBG237:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META226:![0-9]+]], !DIExpression(), [[DBG237]])
; CHECK-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i8 [[IV_NEXT]]), !dbg [[DBG238:![0-9]+]]
; CHECK-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG239:![0-9]+]]
; CHECK: end:
; CHECK-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV]], [[LOOP]] ], !dbg [[DBG240:![0-9]+]]
; CHECK-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG241:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG242:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG243:![0-9]+]]
; CHECK-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG244:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_RES]], [[META227:![0-9]+]], !DIExpression(), [[DBG240]])
; CHECK-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META228:![0-9]+]], !DIExpression(), [[DBG241]])
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META229:![0-9]+]], !DIExpression(), [[DBG242]])
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META230:![0-9]+]], !DIExpression(), [[DBG243]])
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META231:![0-9]+]], !DIExpression(), [[DBG244]])
; CHECK-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG245:![0-9]+]]
; CHECK-NEXT: ret i8 [[IV_RES]], !dbg [[DBG246:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i8 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = add nsw i8 %iv, %extraoffset
%val.shifted = ashr i8 %val, %nbits
%val.shifted.iszero = icmp eq i8 %val.shifted, 0
%iv.next = add i8 %iv, 2 ; not 1
call void @escape_inner(i8 %iv, i8 %nbits, i8 %val.shifted, i1 %val.shifted.iszero, i8 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i8 [ %iv, %loop ]
%nbits.res = phi i8 [ %nbits, %loop ]
%val.shifted.res = phi i8 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i8 [ %iv.next, %loop ]
call void @escape_outer(i8 %iv.res, i8 %nbits.res, i8 %val.shifted.res, i1 %val.shifted.iszero.res, i8 %iv.next.res)
ret i8 %iv.res
}
; Cmp-br are commutable
define i8 @t9(i8 %val, i8 %start, i8 %extraoffset) mustprogress {
; NOLZCNT-LABEL: @t9(
; NOLZCNT-NEXT: entry:
; NOLZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG259:![0-9]+]]
; NOLZCNT: loop:
; NOLZCNT-NEXT: [[IV:%.*]] = phi i8 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG260:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[IV]], [[META249:![0-9]+]], !DIExpression(), [[DBG260]])
; NOLZCNT-NEXT: [[NBITS:%.*]] = add nsw i8 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG261:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[NBITS]], [[META250:![0-9]+]], !DIExpression(), [[DBG261]])
; NOLZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL:%.*]], [[NBITS]], !dbg [[DBG262:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META251:![0-9]+]], !DIExpression(), [[DBG262]])
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISNOTZERO:%.*]] = icmp ne i8 [[VAL_SHIFTED]], 0, !dbg [[DBG263:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISNOTZERO]], [[META252:![0-9]+]], !DIExpression(), [[DBG263]])
; NOLZCNT-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1, !dbg [[DBG264:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META253:![0-9]+]], !DIExpression(), [[DBG264]])
; NOLZCNT-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISNOTZERO]], i8 [[IV_NEXT]]), !dbg [[DBG265:![0-9]+]]
; NOLZCNT-NEXT: br i1 [[VAL_SHIFTED_ISNOTZERO]], label [[LOOP]], label [[END:%.*]], !dbg [[DBG266:![0-9]+]]
; NOLZCNT: end:
; NOLZCNT-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV]], [[LOOP]] ], !dbg [[DBG267:![0-9]+]]
; NOLZCNT-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG268:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG269:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISNOTZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISNOTZERO]], [[LOOP]] ], !dbg [[DBG270:![0-9]+]]
; NOLZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG271:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[IV_RES]], [[META254:![0-9]+]], !DIExpression(), [[DBG267]])
; NOLZCNT-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META255:![0-9]+]], !DIExpression(), [[DBG268]])
; NOLZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META256:![0-9]+]], !DIExpression(), [[DBG269]])
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISNOTZERO_RES]], [[META257:![0-9]+]], !DIExpression(), [[DBG270]])
; NOLZCNT-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META258:![0-9]+]], !DIExpression(), [[DBG271]])
; NOLZCNT-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISNOTZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG272:![0-9]+]]
; NOLZCNT-NEXT: ret i8 [[IV_RES]], !dbg [[DBG273:![0-9]+]]
;
; LZCNT-LABEL: @t9(
; LZCNT-NEXT: entry:
; LZCNT-NEXT: [[VAL_NUMLEADINGZEROS:%.*]] = call i8 @llvm.ctlz.i8(i8 [[VAL:%.*]], i1 false), !dbg [[DBG259:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS:%.*]] = sub nuw nsw i8 8, [[VAL_NUMLEADINGZEROS]], !dbg [[DBG259]]
; LZCNT-NEXT: [[TMP0:%.*]] = sub i8 0, [[EXTRAOFFSET:%.*]], !dbg [[DBG260:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS_OFFSET:%.*]] = add nsw i8 [[VAL_NUMACTIVEBITS]], [[TMP0]], !dbg [[DBG259]]
; LZCNT-NEXT: [[IV_FINAL:%.*]] = call i8 @llvm.smax.i8(i8 [[VAL_NUMACTIVEBITS_OFFSET]], i8 [[START:%.*]]), !dbg [[DBG259]]
; LZCNT-NEXT: [[LOOP_BACKEDGETAKENCOUNT:%.*]] = sub nsw i8 [[IV_FINAL]], [[START]], !dbg [[DBG259]]
; LZCNT-NEXT: [[LOOP_TRIPCOUNT:%.*]] = add nuw nsw i8 [[LOOP_BACKEDGETAKENCOUNT]], 1, !dbg [[DBG259]]
; LZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG260]]
; LZCNT: loop:
; LZCNT-NEXT: [[LOOP_IV:%.*]] = phi i8 [ 0, [[ENTRY:%.*]] ], [ [[LOOP_IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG259]]
; LZCNT-NEXT: [[LOOP_IV_NEXT]] = add nuw nsw i8 [[LOOP_IV]], 1, !dbg [[DBG261:![0-9]+]]
; LZCNT-NEXT: [[LOOP_IVCHECK:%.*]] = icmp eq i8 [[LOOP_IV_NEXT]], [[LOOP_TRIPCOUNT]], !dbg [[DBG261]]
; LZCNT-NEXT: [[VAL_SHIFTED_ISNOTZERO:%.*]] = xor i1 [[LOOP_IVCHECK]], true, !dbg [[DBG261]]
; LZCNT-NEXT: [[IV:%.*]] = add nsw i8 [[LOOP_IV]], [[START]], !dbg [[DBG261]]
; LZCNT-NEXT: #dbg_value(i8 [[IV]], [[META249:![0-9]+]], !DIExpression(), [[DBG259]])
; LZCNT-NEXT: [[NBITS:%.*]] = add nsw i8 [[IV]], [[EXTRAOFFSET]], !dbg [[DBG261]]
; LZCNT-NEXT: #dbg_value(i8 [[NBITS]], [[META250:![0-9]+]], !DIExpression(), [[DBG261]])
; LZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL]], [[NBITS]], !dbg [[DBG262:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META251:![0-9]+]], !DIExpression(), [[DBG262]])
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISNOTZERO]], [[META252:![0-9]+]], !DIExpression(), [[META263:![0-9]+]])
; LZCNT-NEXT: [[IV_NEXT:%.*]] = add i8 [[IV]], 1, !dbg [[DBG264:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META253:![0-9]+]], !DIExpression(), [[DBG264]])
; LZCNT-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISNOTZERO]], i8 [[IV_NEXT]]), !dbg [[DBG265:![0-9]+]]
; LZCNT-NEXT: br i1 [[LOOP_IVCHECK]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG266:![0-9]+]]
; LZCNT: end:
; LZCNT-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV_FINAL]], [[LOOP]] ], !dbg [[DBG267:![0-9]+]]
; LZCNT-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG268:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG269:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_ISNOTZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISNOTZERO]], [[LOOP]] ], !dbg [[DBG270:![0-9]+]]
; LZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG271:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[IV_RES]], [[META254:![0-9]+]], !DIExpression(), [[DBG267]])
; LZCNT-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META255:![0-9]+]], !DIExpression(), [[DBG268]])
; LZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META256:![0-9]+]], !DIExpression(), [[DBG269]])
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISNOTZERO_RES]], [[META257:![0-9]+]], !DIExpression(), [[DBG270]])
; LZCNT-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META258:![0-9]+]], !DIExpression(), [[DBG271]])
; LZCNT-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISNOTZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG272:![0-9]+]]
; LZCNT-NEXT: ret i8 [[IV_RES]], !dbg [[DBG273:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i8 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = add nsw i8 %iv, %extraoffset
%val.shifted = ashr i8 %val, %nbits
%val.shifted.isnotzero = icmp ne i8 %val.shifted, 0
%iv.next = add i8 %iv, 1
call void @escape_inner(i8 %iv, i8 %nbits, i8 %val.shifted, i1 %val.shifted.isnotzero, i8 %iv.next)
br i1 %val.shifted.isnotzero, label %loop, label %end
end:
%iv.res = phi i8 [ %iv, %loop ]
%nbits.res = phi i8 [ %nbits, %loop ]
%val.shifted.res = phi i8 [ %val.shifted, %loop ]
%val.shifted.isnotzero.res = phi i1 [ %val.shifted.isnotzero, %loop ]
%iv.next.res = phi i8 [ %iv.next, %loop ]
call void @escape_outer(i8 %iv.res, i8 %nbits.res, i8 %val.shifted.res, i1 %val.shifted.isnotzero.res, i8 %iv.next.res)
ret i8 %iv.res
}
; We want to exit once it becomes zero
define i8 @n10(i8 %val, i8 %start, i8 %extraoffset) mustprogress {
; CHECK-LABEL: @n10(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]], !dbg [[DBG286:![0-9]+]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG287:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV]], [[META276:![0-9]+]], !DIExpression(), [[DBG287]])
; CHECK-NEXT: [[NBITS:%.*]] = add nsw i8 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG288:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[NBITS]], [[META277:![0-9]+]], !DIExpression(), [[DBG288]])
; CHECK-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL:%.*]], [[NBITS]], !dbg [[DBG289:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META278:![0-9]+]], !DIExpression(), [[DBG289]])
; CHECK-NEXT: [[VAL_SHIFTED_ISNOTZERO:%.*]] = icmp ne i8 [[VAL_SHIFTED]], 0, !dbg [[DBG290:![0-9]+]]
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISNOTZERO]], [[META279:![0-9]+]], !DIExpression(), [[DBG290]])
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1, !dbg [[DBG291:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META280:![0-9]+]], !DIExpression(), [[DBG291]])
; CHECK-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISNOTZERO]], i8 [[IV_NEXT]]), !dbg [[DBG292:![0-9]+]]
; CHECK-NEXT: br i1 [[VAL_SHIFTED_ISNOTZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG293:![0-9]+]]
; CHECK: end:
; CHECK-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV]], [[LOOP]] ], !dbg [[DBG294:![0-9]+]]
; CHECK-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG295:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG296:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_ISNOTZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISNOTZERO]], [[LOOP]] ], !dbg [[DBG297:![0-9]+]]
; CHECK-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG298:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_RES]], [[META281:![0-9]+]], !DIExpression(), [[DBG294]])
; CHECK-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META282:![0-9]+]], !DIExpression(), [[DBG295]])
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META283:![0-9]+]], !DIExpression(), [[DBG296]])
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISNOTZERO_RES]], [[META284:![0-9]+]], !DIExpression(), [[DBG297]])
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META285:![0-9]+]], !DIExpression(), [[DBG298]])
; CHECK-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISNOTZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG299:![0-9]+]]
; CHECK-NEXT: ret i8 [[IV_RES]], !dbg [[DBG300:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i8 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = add nsw i8 %iv, %extraoffset
%val.shifted = ashr i8 %val, %nbits
%val.shifted.isnotzero = icmp ne i8 %val.shifted, 0 ; not eq
%iv.next = add i8 %iv, 1
call void @escape_inner(i8 %iv, i8 %nbits, i8 %val.shifted, i1 %val.shifted.isnotzero, i8 %iv.next)
br i1 %val.shifted.isnotzero, label %end, label %loop
end:
%iv.res = phi i8 [ %iv, %loop ]
%nbits.res = phi i8 [ %nbits, %loop ]
%val.shifted.res = phi i8 [ %val.shifted, %loop ]
%val.shifted.isnotzero.res = phi i1 [ %val.shifted.isnotzero, %loop ]
%iv.next.res = phi i8 [ %iv.next, %loop ]
call void @escape_outer(i8 %iv.res, i8 %nbits.res, i8 %val.shifted.res, i1 %val.shifted.isnotzero.res, i8 %iv.next.res)
ret i8 %iv.res
}
; Once it compares zero, we want to exit, not exit when it compares non-zero
define i8 @n11(i8 %val, i8 %start, i8 %extraoffset) mustprogress {
; CHECK-LABEL: @n11(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]], !dbg [[DBG313:![0-9]+]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG314:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV]], [[META303:![0-9]+]], !DIExpression(), [[DBG314]])
; CHECK-NEXT: [[NBITS:%.*]] = add nsw i8 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG315:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[NBITS]], [[META304:![0-9]+]], !DIExpression(), [[DBG315]])
; CHECK-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL:%.*]], [[NBITS]], !dbg [[DBG316:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META305:![0-9]+]], !DIExpression(), [[DBG316]])
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i8 [[VAL_SHIFTED]], 0, !dbg [[DBG317:![0-9]+]]
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META306:![0-9]+]], !DIExpression(), [[DBG317]])
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1, !dbg [[DBG318:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META307:![0-9]+]], !DIExpression(), [[DBG318]])
; CHECK-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i8 [[IV_NEXT]]), !dbg [[DBG319:![0-9]+]]
; CHECK-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[LOOP]], label [[END:%.*]], !dbg [[DBG320:![0-9]+]]
; CHECK: end:
; CHECK-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV]], [[LOOP]] ], !dbg [[DBG321:![0-9]+]]
; CHECK-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG322:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG323:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG324:![0-9]+]]
; CHECK-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG325:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_RES]], [[META308:![0-9]+]], !DIExpression(), [[DBG321]])
; CHECK-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META309:![0-9]+]], !DIExpression(), [[DBG322]])
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META310:![0-9]+]], !DIExpression(), [[DBG323]])
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META311:![0-9]+]], !DIExpression(), [[DBG324]])
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META312:![0-9]+]], !DIExpression(), [[DBG325]])
; CHECK-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG326:![0-9]+]]
; CHECK-NEXT: ret i8 [[IV_RES]], !dbg [[DBG327:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i8 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = add nsw i8 %iv, %extraoffset
%val.shifted = ashr i8 %val, %nbits
%val.shifted.iszero = icmp eq i8 %val.shifted, 0
%iv.next = add i8 %iv, 1
call void @escape_inner(i8 %iv, i8 %nbits, i8 %val.shifted, i1 %val.shifted.iszero, i8 %iv.next)
br i1 %val.shifted.iszero, label %loop, label %end ; wrong destinations
end:
%iv.res = phi i8 [ %iv, %loop ]
%nbits.res = phi i8 [ %nbits, %loop ]
%val.shifted.res = phi i8 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i8 [ %iv.next, %loop ]
call void @escape_outer(i8 %iv.res, i8 %nbits.res, i8 %val.shifted.res, i1 %val.shifted.iszero.res, i8 %iv.next.res)
ret i8 %iv.res
}
; We must be comparing with 0
define i8 @n12(i8 %val, i8 %start, i8 %extraoffset) mustprogress {
; CHECK-LABEL: @n12(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]], !dbg [[DBG340:![0-9]+]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG341:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV]], [[META330:![0-9]+]], !DIExpression(), [[DBG341]])
; CHECK-NEXT: [[NBITS:%.*]] = add nsw i8 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG342:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[NBITS]], [[META331:![0-9]+]], !DIExpression(), [[DBG342]])
; CHECK-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL:%.*]], [[NBITS]], !dbg [[DBG343:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META332:![0-9]+]], !DIExpression(), [[DBG343]])
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i8 [[VAL_SHIFTED]], 1, !dbg [[DBG344:![0-9]+]]
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META333:![0-9]+]], !DIExpression(), [[DBG344]])
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1, !dbg [[DBG345:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META334:![0-9]+]], !DIExpression(), [[DBG345]])
; CHECK-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i8 [[IV_NEXT]]), !dbg [[DBG346:![0-9]+]]
; CHECK-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG347:![0-9]+]]
; CHECK: end:
; CHECK-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV]], [[LOOP]] ], !dbg [[DBG348:![0-9]+]]
; CHECK-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG349:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG350:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG351:![0-9]+]]
; CHECK-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG352:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_RES]], [[META335:![0-9]+]], !DIExpression(), [[DBG348]])
; CHECK-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META336:![0-9]+]], !DIExpression(), [[DBG349]])
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META337:![0-9]+]], !DIExpression(), [[DBG350]])
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META338:![0-9]+]], !DIExpression(), [[DBG351]])
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META339:![0-9]+]], !DIExpression(), [[DBG352]])
; CHECK-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG353:![0-9]+]]
; CHECK-NEXT: ret i8 [[IV_RES]], !dbg [[DBG354:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i8 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = add nsw i8 %iv, %extraoffset
%val.shifted = ashr i8 %val, %nbits
%val.shifted.iszero = icmp eq i8 %val.shifted, 1 ; not 0
%iv.next = add i8 %iv, 1
call void @escape_inner(i8 %iv, i8 %nbits, i8 %val.shifted, i1 %val.shifted.iszero, i8 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i8 [ %iv, %loop ]
%nbits.res = phi i8 [ %nbits, %loop ]
%val.shifted.res = phi i8 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i8 [ %iv.next, %loop ]
call void @escape_outer(i8 %iv.res, i8 %nbits.res, i8 %val.shifted.res, i1 %val.shifted.iszero.res, i8 %iv.next.res)
ret i8 %iv.res
}
; Loop must have a single block.
define i8 @n13(i8 %val, i8 %start, i8 %extraoffset) mustprogress {
; CHECK-LABEL: @n13(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]], !dbg [[DBG367:![0-9]+]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_END:%.*]] ], !dbg [[DBG368:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV]], [[META357:![0-9]+]], !DIExpression(), [[DBG368]])
; CHECK-NEXT: br label [[LOOP_END]], !dbg [[DBG369:![0-9]+]]
; CHECK: loop.end:
; CHECK-NEXT: [[NBITS:%.*]] = add nsw i8 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG370:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[NBITS]], [[META358:![0-9]+]], !DIExpression(), [[DBG370]])
; CHECK-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL:%.*]], [[NBITS]], !dbg [[DBG371:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META359:![0-9]+]], !DIExpression(), [[DBG371]])
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i8 [[VAL_SHIFTED]], 0, !dbg [[DBG372:![0-9]+]]
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META360:![0-9]+]], !DIExpression(), [[DBG372]])
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1, !dbg [[DBG373:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META361:![0-9]+]], !DIExpression(), [[DBG373]])
; CHECK-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i8 [[IV_NEXT]]), !dbg [[DBG374:![0-9]+]]
; CHECK-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG375:![0-9]+]]
; CHECK: end:
; CHECK-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV]], [[LOOP_END]] ], !dbg [[DBG376:![0-9]+]]
; CHECK-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP_END]] ], !dbg [[DBG377:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP_END]] ], !dbg [[DBG378:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP_END]] ], !dbg [[DBG379:![0-9]+]]
; CHECK-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP_END]] ], !dbg [[DBG380:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_RES]], [[META362:![0-9]+]], !DIExpression(), [[DBG376]])
; CHECK-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META363:![0-9]+]], !DIExpression(), [[DBG377]])
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META364:![0-9]+]], !DIExpression(), [[DBG378]])
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META365:![0-9]+]], !DIExpression(), [[DBG379]])
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META366:![0-9]+]], !DIExpression(), [[DBG380]])
; CHECK-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG381:![0-9]+]]
; CHECK-NEXT: ret i8 [[IV_RES]], !dbg [[DBG382:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i8 [ %start, %entry ], [ %iv.next, %loop.end ]
br label %loop.end
loop.end:
%nbits = add nsw i8 %iv, %extraoffset
%val.shifted = ashr i8 %val, %nbits
%val.shifted.iszero = icmp eq i8 %val.shifted, 0
%iv.next = add i8 %iv, 1
call void @escape_inner(i8 %iv, i8 %nbits, i8 %val.shifted, i1 %val.shifted.iszero, i8 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i8 [ %iv, %loop.end ]
%nbits.res = phi i8 [ %nbits, %loop.end ]
%val.shifted.res = phi i8 [ %val.shifted, %loop.end ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop.end ]
%iv.next.res = phi i8 [ %iv.next, %loop.end ]
call void @escape_outer(i8 %iv.res, i8 %nbits.res, i8 %val.shifted.res, i1 %val.shifted.iszero.res, i8 %iv.next.res)
ret i8 %iv.res
}
; The comparison must have an equality predicate
define i8 @n14(i8 %val, i8 %start, i8 %extraoffset) mustprogress {
; CHECK-LABEL: @n14(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]], !dbg [[DBG395:![0-9]+]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG396:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV]], [[META385:![0-9]+]], !DIExpression(), [[DBG396]])
; CHECK-NEXT: [[NBITS:%.*]] = add nsw i8 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG397:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[NBITS]], [[META386:![0-9]+]], !DIExpression(), [[DBG397]])
; CHECK-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL:%.*]], [[NBITS]], !dbg [[DBG398:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META387:![0-9]+]], !DIExpression(), [[DBG398]])
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp ult i8 [[VAL_SHIFTED]], 1, !dbg [[DBG399:![0-9]+]]
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META388:![0-9]+]], !DIExpression(), [[DBG399]])
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1, !dbg [[DBG400:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META389:![0-9]+]], !DIExpression(), [[DBG400]])
; CHECK-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i8 [[IV_NEXT]]), !dbg [[DBG401:![0-9]+]]
; CHECK-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG402:![0-9]+]]
; CHECK: end:
; CHECK-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV]], [[LOOP]] ], !dbg [[DBG403:![0-9]+]]
; CHECK-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG404:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG405:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG406:![0-9]+]]
; CHECK-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG407:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_RES]], [[META390:![0-9]+]], !DIExpression(), [[DBG403]])
; CHECK-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META391:![0-9]+]], !DIExpression(), [[DBG404]])
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META392:![0-9]+]], !DIExpression(), [[DBG405]])
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META393:![0-9]+]], !DIExpression(), [[DBG406]])
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META394:![0-9]+]], !DIExpression(), [[DBG407]])
; CHECK-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG408:![0-9]+]]
; CHECK-NEXT: ret i8 [[IV_RES]], !dbg [[DBG409:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i8 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = add nsw i8 %iv, %extraoffset
%val.shifted = ashr i8 %val, %nbits
%val.shifted.iszero = icmp ult i8 %val.shifted, 1 ; not `==0`
%iv.next = add i8 %iv, 1
call void @escape_inner(i8 %iv, i8 %nbits, i8 %val.shifted, i1 %val.shifted.iszero, i8 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i8 [ %iv, %loop ]
%nbits.res = phi i8 [ %nbits, %loop ]
%val.shifted.res = phi i8 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i8 [ %iv.next, %loop ]
call void @escape_outer(i8 %iv.res, i8 %nbits.res, i8 %val.shifted.res, i1 %val.shifted.iszero.res, i8 %iv.next.res)
ret i8 %iv.res
}
; offset computation can be commuted
define i8 @t15(i8 %val, i8 %start, i8 %extraoffset) mustprogress {
; NOLZCNT-LABEL: @t15(
; NOLZCNT-NEXT: entry:
; NOLZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG422:![0-9]+]]
; NOLZCNT: loop:
; NOLZCNT-NEXT: [[IV:%.*]] = phi i8 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG423:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[IV]], [[META412:![0-9]+]], !DIExpression(), [[DBG423]])
; NOLZCNT-NEXT: [[NBITS:%.*]] = add nsw i8 [[EXTRAOFFSET:%.*]], [[IV]], !dbg [[DBG424:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[NBITS]], [[META413:![0-9]+]], !DIExpression(), [[DBG424]])
; NOLZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL:%.*]], [[NBITS]], !dbg [[DBG425:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META414:![0-9]+]], !DIExpression(), [[DBG425]])
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i8 [[VAL_SHIFTED]], 0, !dbg [[DBG426:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META415:![0-9]+]], !DIExpression(), [[DBG426]])
; NOLZCNT-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1, !dbg [[DBG427:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META416:![0-9]+]], !DIExpression(), [[DBG427]])
; NOLZCNT-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i8 [[IV_NEXT]]), !dbg [[DBG428:![0-9]+]]
; NOLZCNT-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG429:![0-9]+]]
; NOLZCNT: end:
; NOLZCNT-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV]], [[LOOP]] ], !dbg [[DBG430:![0-9]+]]
; NOLZCNT-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG431:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG432:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG433:![0-9]+]]
; NOLZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG434:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[IV_RES]], [[META417:![0-9]+]], !DIExpression(), [[DBG430]])
; NOLZCNT-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META418:![0-9]+]], !DIExpression(), [[DBG431]])
; NOLZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META419:![0-9]+]], !DIExpression(), [[DBG432]])
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META420:![0-9]+]], !DIExpression(), [[DBG433]])
; NOLZCNT-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META421:![0-9]+]], !DIExpression(), [[DBG434]])
; NOLZCNT-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG435:![0-9]+]]
; NOLZCNT-NEXT: ret i8 [[IV_RES]], !dbg [[DBG436:![0-9]+]]
;
; LZCNT-LABEL: @t15(
; LZCNT-NEXT: entry:
; LZCNT-NEXT: [[VAL_NUMLEADINGZEROS:%.*]] = call i8 @llvm.ctlz.i8(i8 [[VAL:%.*]], i1 false), !dbg [[DBG422:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS:%.*]] = sub nuw nsw i8 8, [[VAL_NUMLEADINGZEROS]], !dbg [[DBG422]]
; LZCNT-NEXT: [[TMP0:%.*]] = sub i8 0, [[EXTRAOFFSET:%.*]], !dbg [[DBG423:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS_OFFSET:%.*]] = add nsw i8 [[VAL_NUMACTIVEBITS]], [[TMP0]], !dbg [[DBG422]]
; LZCNT-NEXT: [[IV_FINAL:%.*]] = call i8 @llvm.smax.i8(i8 [[VAL_NUMACTIVEBITS_OFFSET]], i8 [[START:%.*]]), !dbg [[DBG422]]
; LZCNT-NEXT: [[LOOP_BACKEDGETAKENCOUNT:%.*]] = sub nsw i8 [[IV_FINAL]], [[START]], !dbg [[DBG422]]
; LZCNT-NEXT: [[LOOP_TRIPCOUNT:%.*]] = add nuw nsw i8 [[LOOP_BACKEDGETAKENCOUNT]], 1, !dbg [[DBG422]]
; LZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG423]]
; LZCNT: loop:
; LZCNT-NEXT: [[LOOP_IV:%.*]] = phi i8 [ 0, [[ENTRY:%.*]] ], [ [[LOOP_IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG422]]
; LZCNT-NEXT: [[LOOP_IV_NEXT]] = add nuw nsw i8 [[LOOP_IV]], 1, !dbg [[DBG424:![0-9]+]]
; LZCNT-NEXT: [[LOOP_IVCHECK:%.*]] = icmp eq i8 [[LOOP_IV_NEXT]], [[LOOP_TRIPCOUNT]], !dbg [[DBG424]]
; LZCNT-NEXT: [[IV:%.*]] = add nsw i8 [[LOOP_IV]], [[START]], !dbg [[DBG424]]
; LZCNT-NEXT: #dbg_value(i8 [[IV]], [[META412:![0-9]+]], !DIExpression(), [[DBG422]])
; LZCNT-NEXT: [[NBITS:%.*]] = add nsw i8 [[EXTRAOFFSET]], [[IV]], !dbg [[DBG424]]
; LZCNT-NEXT: #dbg_value(i8 [[NBITS]], [[META413:![0-9]+]], !DIExpression(), [[DBG424]])
; LZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL]], [[NBITS]], !dbg [[DBG425:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META414:![0-9]+]], !DIExpression(), [[DBG425]])
; LZCNT-NEXT: #dbg_value(i1 [[LOOP_IVCHECK]], [[META415:![0-9]+]], !DIExpression(), [[META426:![0-9]+]])
; LZCNT-NEXT: [[IV_NEXT:%.*]] = add i8 [[IV]], 1, !dbg [[DBG427:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META416:![0-9]+]], !DIExpression(), [[DBG427]])
; LZCNT-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[LOOP_IVCHECK]], i8 [[IV_NEXT]]), !dbg [[DBG428:![0-9]+]]
; LZCNT-NEXT: br i1 [[LOOP_IVCHECK]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG429:![0-9]+]]
; LZCNT: end:
; LZCNT-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV_FINAL]], [[LOOP]] ], !dbg [[DBG430:![0-9]+]]
; LZCNT-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG431:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG432:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[LOOP_IVCHECK]], [[LOOP]] ], !dbg [[DBG433:![0-9]+]]
; LZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG434:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[IV_RES]], [[META417:![0-9]+]], !DIExpression(), [[DBG430]])
; LZCNT-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META418:![0-9]+]], !DIExpression(), [[DBG431]])
; LZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META419:![0-9]+]], !DIExpression(), [[DBG432]])
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META420:![0-9]+]], !DIExpression(), [[DBG433]])
; LZCNT-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META421:![0-9]+]], !DIExpression(), [[DBG434]])
; LZCNT-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG435:![0-9]+]]
; LZCNT-NEXT: ret i8 [[IV_RES]], !dbg [[DBG436:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i8 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = add nsw i8 %extraoffset, %iv ; swapped order
%val.shifted = ashr i8 %val, %nbits
%val.shifted.iszero = icmp eq i8 %val.shifted, 0
%iv.next = add i8 %iv, 1
call void @escape_inner(i8 %iv, i8 %nbits, i8 %val.shifted, i1 %val.shifted.iszero, i8 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i8 [ %iv, %loop ]
%nbits.res = phi i8 [ %nbits, %loop ]
%val.shifted.res = phi i8 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i8 [ %iv.next, %loop ]
call void @escape_outer(i8 %iv.res, i8 %nbits.res, i8 %val.shifted.res, i1 %val.shifted.iszero.res, i8 %iv.next.res)
ret i8 %iv.res
}
; But for `sub nsw`, it is not commutable.
define i8 @n16(i8 %val, i8 %start, i8 %extraoffset) mustprogress {
; CHECK-LABEL: @n16(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]], !dbg [[DBG449:![0-9]+]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG450:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV]], [[META439:![0-9]+]], !DIExpression(), [[DBG450]])
; CHECK-NEXT: [[NBITS:%.*]] = sub nsw i8 [[EXTRAOFFSET:%.*]], [[IV]], !dbg [[DBG451:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[NBITS]], [[META440:![0-9]+]], !DIExpression(), [[DBG451]])
; CHECK-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL:%.*]], [[NBITS]], !dbg [[DBG452:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META441:![0-9]+]], !DIExpression(), [[DBG452]])
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i8 [[VAL_SHIFTED]], 0, !dbg [[DBG453:![0-9]+]]
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META442:![0-9]+]], !DIExpression(), [[DBG453]])
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1, !dbg [[DBG454:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META443:![0-9]+]], !DIExpression(), [[DBG454]])
; CHECK-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i8 [[IV_NEXT]]), !dbg [[DBG455:![0-9]+]]
; CHECK-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG456:![0-9]+]]
; CHECK: end:
; CHECK-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV]], [[LOOP]] ], !dbg [[DBG457:![0-9]+]]
; CHECK-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG458:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG459:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG460:![0-9]+]]
; CHECK-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG461:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_RES]], [[META444:![0-9]+]], !DIExpression(), [[DBG457]])
; CHECK-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META445:![0-9]+]], !DIExpression(), [[DBG458]])
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META446:![0-9]+]], !DIExpression(), [[DBG459]])
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META447:![0-9]+]], !DIExpression(), [[DBG460]])
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META448:![0-9]+]], !DIExpression(), [[DBG461]])
; CHECK-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG462:![0-9]+]]
; CHECK-NEXT: ret i8 [[IV_RES]], !dbg [[DBG463:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i8 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = sub nsw i8 %extraoffset, %iv
%val.shifted = ashr i8 %val, %nbits
%val.shifted.iszero = icmp eq i8 %val.shifted, 0
%iv.next = add i8 %iv, 1
call void @escape_inner(i8 %iv, i8 %nbits, i8 %val.shifted, i1 %val.shifted.iszero, i8 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i8 [ %iv, %loop ]
%nbits.res = phi i8 [ %nbits, %loop ]
%val.shifted.res = phi i8 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i8 [ %iv.next, %loop ]
call void @escape_outer(i8 %iv.res, i8 %nbits.res, i8 %val.shifted.res, i1 %val.shifted.iszero.res, i8 %iv.next.res)
ret i8 %iv.res
}
; The offset must be loop-invariant
define i8 @n17(i8 %val, i8 %start) mustprogress {
; CHECK-LABEL: @n17(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]], !dbg [[DBG477:![0-9]+]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG478:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV]], [[META466:![0-9]+]], !DIExpression(), [[DBG478]])
; CHECK-NEXT: [[EXTRAOFFSET:%.*]] = call i8 @gen.i8(), !dbg [[DBG479:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[EXTRAOFFSET]], [[META467:![0-9]+]], !DIExpression(), [[DBG479]])
; CHECK-NEXT: [[NBITS:%.*]] = add nsw i8 [[IV]], [[EXTRAOFFSET]], !dbg [[DBG480:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[NBITS]], [[META468:![0-9]+]], !DIExpression(), [[DBG480]])
; CHECK-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL:%.*]], [[NBITS]], !dbg [[DBG481:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META469:![0-9]+]], !DIExpression(), [[DBG481]])
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i8 [[VAL_SHIFTED]], 0, !dbg [[DBG482:![0-9]+]]
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META470:![0-9]+]], !DIExpression(), [[DBG482]])
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1, !dbg [[DBG483:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META471:![0-9]+]], !DIExpression(), [[DBG483]])
; CHECK-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i8 [[IV_NEXT]]), !dbg [[DBG484:![0-9]+]]
; CHECK-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG485:![0-9]+]]
; CHECK: end:
; CHECK-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV]], [[LOOP]] ], !dbg [[DBG486:![0-9]+]]
; CHECK-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG487:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG488:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG489:![0-9]+]]
; CHECK-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG490:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_RES]], [[META472:![0-9]+]], !DIExpression(), [[DBG486]])
; CHECK-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META473:![0-9]+]], !DIExpression(), [[DBG487]])
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META474:![0-9]+]], !DIExpression(), [[DBG488]])
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META475:![0-9]+]], !DIExpression(), [[DBG489]])
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META476:![0-9]+]], !DIExpression(), [[DBG490]])
; CHECK-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG491:![0-9]+]]
; CHECK-NEXT: ret i8 [[IV_RES]], !dbg [[DBG492:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i8 [ %start, %entry ], [ %iv.next, %loop ]
%extraoffset = call i8 @gen.i8()
%nbits = add nsw i8 %iv, %extraoffset
%val.shifted = ashr i8 %val, %nbits
%val.shifted.iszero = icmp eq i8 %val.shifted, 0
%iv.next = add i8 %iv, 1
call void @escape_inner(i8 %iv, i8 %nbits, i8 %val.shifted, i1 %val.shifted.iszero, i8 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i8 [ %iv, %loop ]
%nbits.res = phi i8 [ %nbits, %loop ]
%val.shifted.res = phi i8 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i8 [ %iv.next, %loop ]
call void @escape_outer(i8 %iv.res, i8 %nbits.res, i8 %val.shifted.res, i1 %val.shifted.iszero.res, i8 %iv.next.res)
ret i8 %iv.res
}
; Likewise for `sub nsw`.
define i8 @n18(i8 %val, i8 %start) mustprogress {
; CHECK-LABEL: @n18(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]], !dbg [[DBG506:![0-9]+]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG507:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV]], [[META495:![0-9]+]], !DIExpression(), [[DBG507]])
; CHECK-NEXT: [[EXTRAOFFSET:%.*]] = call i8 @gen.i8(), !dbg [[DBG508:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[EXTRAOFFSET]], [[META496:![0-9]+]], !DIExpression(), [[DBG508]])
; CHECK-NEXT: [[NBITS:%.*]] = sub nsw i8 [[IV]], [[EXTRAOFFSET]], !dbg [[DBG509:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[NBITS]], [[META497:![0-9]+]], !DIExpression(), [[DBG509]])
; CHECK-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL:%.*]], [[NBITS]], !dbg [[DBG510:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META498:![0-9]+]], !DIExpression(), [[DBG510]])
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i8 [[VAL_SHIFTED]], 0, !dbg [[DBG511:![0-9]+]]
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META499:![0-9]+]], !DIExpression(), [[DBG511]])
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1, !dbg [[DBG512:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META500:![0-9]+]], !DIExpression(), [[DBG512]])
; CHECK-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i8 [[IV_NEXT]]), !dbg [[DBG513:![0-9]+]]
; CHECK-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG514:![0-9]+]]
; CHECK: end:
; CHECK-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV]], [[LOOP]] ], !dbg [[DBG515:![0-9]+]]
; CHECK-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG516:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG517:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG518:![0-9]+]]
; CHECK-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG519:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_RES]], [[META501:![0-9]+]], !DIExpression(), [[DBG515]])
; CHECK-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META502:![0-9]+]], !DIExpression(), [[DBG516]])
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META503:![0-9]+]], !DIExpression(), [[DBG517]])
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META504:![0-9]+]], !DIExpression(), [[DBG518]])
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META505:![0-9]+]], !DIExpression(), [[DBG519]])
; CHECK-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG520:![0-9]+]]
; CHECK-NEXT: ret i8 [[IV_RES]], !dbg [[DBG521:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i8 [ %start, %entry ], [ %iv.next, %loop ]
%extraoffset = call i8 @gen.i8()
%nbits = sub nsw i8 %iv, %extraoffset
%val.shifted = ashr i8 %val, %nbits
%val.shifted.iszero = icmp eq i8 %val.shifted, 0
%iv.next = add i8 %iv, 1
call void @escape_inner(i8 %iv, i8 %nbits, i8 %val.shifted, i1 %val.shifted.iszero, i8 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i8 [ %iv, %loop ]
%nbits.res = phi i8 [ %nbits, %loop ]
%val.shifted.res = phi i8 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i8 [ %iv.next, %loop ]
call void @escape_outer(i8 %iv.res, i8 %nbits.res, i8 %val.shifted.res, i1 %val.shifted.iszero.res, i8 %iv.next.res)
ret i8 %iv.res
}
; The "induction variable" must be in the loop header.
define i8 @n19(i8 %val, i8 %start, i8 %extraoffset) mustprogress {
; CHECK-LABEL: @n19(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP_PREHEADER:%.*]], !dbg [[DBG535:![0-9]+]]
; CHECK: loop.preheader:
; CHECK-NEXT: [[NOTIV:%.*]] = phi i8 [ 0, [[ENTRY:%.*]] ], !dbg [[DBG536:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[NOTIV]], [[META524:![0-9]+]], !DIExpression(), [[DBG536]])
; CHECK-NEXT: br label [[LOOP:%.*]], !dbg [[DBG537:![0-9]+]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[START:%.*]], [[LOOP_PREHEADER]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG538:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV]], [[META525:![0-9]+]], !DIExpression(), [[DBG538]])
; CHECK-NEXT: [[NBITS:%.*]] = add nsw i8 [[NOTIV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG539:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[NBITS]], [[META526:![0-9]+]], !DIExpression(), [[DBG539]])
; CHECK-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL:%.*]], [[NBITS]], !dbg [[DBG540:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META527:![0-9]+]], !DIExpression(), [[DBG540]])
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i8 [[VAL_SHIFTED]], 0, !dbg [[DBG541:![0-9]+]]
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META528:![0-9]+]], !DIExpression(), [[DBG541]])
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1, !dbg [[DBG542:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META529:![0-9]+]], !DIExpression(), [[DBG542]])
; CHECK-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i8 [[IV_NEXT]]), !dbg [[DBG543:![0-9]+]]
; CHECK-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG544:![0-9]+]]
; CHECK: end:
; CHECK-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV]], [[LOOP]] ], !dbg [[DBG545:![0-9]+]]
; CHECK-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG546:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG547:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG548:![0-9]+]]
; CHECK-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG549:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_RES]], [[META530:![0-9]+]], !DIExpression(), [[DBG545]])
; CHECK-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META531:![0-9]+]], !DIExpression(), [[DBG546]])
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META532:![0-9]+]], !DIExpression(), [[DBG547]])
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META533:![0-9]+]], !DIExpression(), [[DBG548]])
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META534:![0-9]+]], !DIExpression(), [[DBG549]])
; CHECK-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG550:![0-9]+]]
; CHECK-NEXT: ret i8 [[IV_RES]], !dbg [[DBG551:![0-9]+]]
;
entry:
br label %loop.preheader
loop.preheader:
%notiv = phi i8 [ 0, %entry ]
br label %loop
loop:
%iv = phi i8 [ %start, %loop.preheader ], [ %iv.next, %loop ]
%nbits = add nsw i8 %notiv, %extraoffset ; uses %notiv instead of %iv
%val.shifted = ashr i8 %val, %nbits
%val.shifted.iszero = icmp eq i8 %val.shifted, 0
%iv.next = add i8 %iv, 1
call void @escape_inner(i8 %iv, i8 %nbits, i8 %val.shifted, i1 %val.shifted.iszero, i8 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i8 [ %iv, %loop ]
%nbits.res = phi i8 [ %nbits, %loop ]
%val.shifted.res = phi i8 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i8 [ %iv.next, %loop ]
call void @escape_outer(i8 %iv.res, i8 %nbits.res, i8 %val.shifted.res, i1 %val.shifted.iszero.res, i8 %iv.next.res)
ret i8 %iv.res
}
; IV must really be a PHI
define i8 @n20(i8 %val, i8 %start, i8 %extraoffset) mustprogress {
; CHECK-LABEL: @n20(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]], !dbg [[DBG564:![0-9]+]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = add i8 0, 0, !dbg [[DBG565:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV]], [[META554:![0-9]+]], !DIExpression(), [[DBG565]])
; CHECK-NEXT: [[NBITS:%.*]] = add nsw i8 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG566:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[NBITS]], [[META555:![0-9]+]], !DIExpression(), [[DBG566]])
; CHECK-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL:%.*]], [[NBITS]], !dbg [[DBG567:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META556:![0-9]+]], !DIExpression(), [[DBG567]])
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i8 [[VAL_SHIFTED]], 0, !dbg [[DBG568:![0-9]+]]
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META557:![0-9]+]], !DIExpression(), [[DBG568]])
; CHECK-NEXT: [[IV_NEXT:%.*]] = add i8 [[IV]], 1, !dbg [[DBG569:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META558:![0-9]+]], !DIExpression(), [[DBG569]])
; CHECK-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i8 [[IV_NEXT]]), !dbg [[DBG570:![0-9]+]]
; CHECK-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG571:![0-9]+]]
; CHECK: end:
; CHECK-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV]], [[LOOP]] ], !dbg [[DBG572:![0-9]+]]
; CHECK-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG573:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG574:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG575:![0-9]+]]
; CHECK-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG576:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_RES]], [[META559:![0-9]+]], !DIExpression(), [[DBG572]])
; CHECK-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META560:![0-9]+]], !DIExpression(), [[DBG573]])
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META561:![0-9]+]], !DIExpression(), [[DBG574]])
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META562:![0-9]+]], !DIExpression(), [[DBG575]])
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META563:![0-9]+]], !DIExpression(), [[DBG576]])
; CHECK-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG577:![0-9]+]]
; CHECK-NEXT: ret i8 [[IV_RES]], !dbg [[DBG578:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = add i8 0, 0 ; again not IV
%nbits = add nsw i8 %iv, %extraoffset
%val.shifted = ashr i8 %val, %nbits
%val.shifted.iszero = icmp eq i8 %val.shifted, 0
%iv.next = add i8 %iv, 1
call void @escape_inner(i8 %iv, i8 %nbits, i8 %val.shifted, i1 %val.shifted.iszero, i8 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i8 [ %iv, %loop ]
%nbits.res = phi i8 [ %nbits, %loop ]
%val.shifted.res = phi i8 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i8 [ %iv.next, %loop ]
call void @escape_outer(i8 %iv.res, i8 %nbits.res, i8 %val.shifted.res, i1 %val.shifted.iszero.res, i8 %iv.next.res)
ret i8 %iv.res
}
; The induction should be actually increasing IV
define i8 @n21(i8 %val, i8 %start, i8 %extraoffset) mustprogress {
; CHECK-LABEL: @n21(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]], !dbg [[DBG591:![0-9]+]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG592:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV]], [[META581:![0-9]+]], !DIExpression(), [[DBG592]])
; CHECK-NEXT: [[NBITS:%.*]] = add nsw i8 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG593:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[NBITS]], [[META582:![0-9]+]], !DIExpression(), [[DBG593]])
; CHECK-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL:%.*]], [[NBITS]], !dbg [[DBG594:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META583:![0-9]+]], !DIExpression(), [[DBG594]])
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i8 [[VAL_SHIFTED]], 0, !dbg [[DBG595:![0-9]+]]
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META584:![0-9]+]], !DIExpression(), [[DBG595]])
; CHECK-NEXT: [[IV_NEXT]] = add i8 0, 1, !dbg [[DBG596:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META585:![0-9]+]], !DIExpression(), [[DBG596]])
; CHECK-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i8 [[IV_NEXT]]), !dbg [[DBG597:![0-9]+]]
; CHECK-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG598:![0-9]+]]
; CHECK: end:
; CHECK-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV]], [[LOOP]] ], !dbg [[DBG599:![0-9]+]]
; CHECK-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG600:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG601:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG602:![0-9]+]]
; CHECK-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG603:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_RES]], [[META586:![0-9]+]], !DIExpression(), [[DBG599]])
; CHECK-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META587:![0-9]+]], !DIExpression(), [[DBG600]])
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META588:![0-9]+]], !DIExpression(), [[DBG601]])
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META589:![0-9]+]], !DIExpression(), [[DBG602]])
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META590:![0-9]+]], !DIExpression(), [[DBG603]])
; CHECK-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG604:![0-9]+]]
; CHECK-NEXT: ret i8 [[IV_RES]], !dbg [[DBG605:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i8 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = add nsw i8 %iv, %extraoffset
%val.shifted = ashr i8 %val, %nbits
%val.shifted.iszero = icmp eq i8 %val.shifted, 0
%iv.next = add i8 0, 1 ; should be adding to IV
call void @escape_inner(i8 %iv, i8 %nbits, i8 %val.shifted, i1 %val.shifted.iszero, i8 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i8 [ %iv, %loop ]
%nbits.res = phi i8 [ %nbits, %loop ]
%val.shifted.res = phi i8 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i8 [ %iv.next, %loop ]
call void @escape_outer(i8 %iv.res, i8 %nbits.res, i8 %val.shifted.res, i1 %val.shifted.iszero.res, i8 %iv.next.res)
ret i8 %iv.res
}
; We should not just blindly look for add, we should look what IV actually uses.
define i8 @n22(i8 %val, i8 %start, i8 %extraoffset) mustprogress {
; NOLZCNT-LABEL: @n22(
; NOLZCNT-NEXT: entry:
; NOLZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG620:![0-9]+]]
; NOLZCNT: loop:
; NOLZCNT-NEXT: [[IV:%.*]] = phi i8 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG621:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[IV]], [[META608:![0-9]+]], !DIExpression(), [[DBG621]])
; NOLZCNT-NEXT: [[NBITS:%.*]] = add nsw i8 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG622:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[NBITS]], [[META609:![0-9]+]], !DIExpression(), [[DBG622]])
; NOLZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL:%.*]], [[NBITS]], !dbg [[DBG623:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META610:![0-9]+]], !DIExpression(), [[DBG623]])
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i8 [[VAL_SHIFTED]], 0, !dbg [[DBG624:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META611:![0-9]+]], !DIExpression(), [[DBG624]])
; NOLZCNT-NEXT: [[NOT_IV_NEXT:%.*]] = add i8 [[IV]], 1, !dbg [[DBG625:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[NOT_IV_NEXT]], [[META612:![0-9]+]], !DIExpression(), [[DBG625]])
; NOLZCNT-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1, !dbg [[DBG626:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META613:![0-9]+]], !DIExpression(), [[DBG626]])
; NOLZCNT-NEXT: [[ALSO_IV_NEXT:%.*]] = add i8 [[IV]], 1, !dbg [[DBG627:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[ALSO_IV_NEXT]], [[META614:![0-9]+]], !DIExpression(), [[DBG627]])
; NOLZCNT-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i8 [[IV_NEXT]]), !dbg [[DBG628:![0-9]+]]
; NOLZCNT-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG629:![0-9]+]]
; NOLZCNT: end:
; NOLZCNT-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV]], [[LOOP]] ], !dbg [[DBG630:![0-9]+]]
; NOLZCNT-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG631:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG632:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG633:![0-9]+]]
; NOLZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG634:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[IV_RES]], [[META615:![0-9]+]], !DIExpression(), [[DBG630]])
; NOLZCNT-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META616:![0-9]+]], !DIExpression(), [[DBG631]])
; NOLZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META617:![0-9]+]], !DIExpression(), [[DBG632]])
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META618:![0-9]+]], !DIExpression(), [[DBG633]])
; NOLZCNT-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META619:![0-9]+]], !DIExpression(), [[DBG634]])
; NOLZCNT-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG635:![0-9]+]]
; NOLZCNT-NEXT: ret i8 [[IV_RES]], !dbg [[DBG636:![0-9]+]]
;
; LZCNT-LABEL: @n22(
; LZCNT-NEXT: entry:
; LZCNT-NEXT: [[VAL_NUMLEADINGZEROS:%.*]] = call i8 @llvm.ctlz.i8(i8 [[VAL:%.*]], i1 false), !dbg [[DBG620:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS:%.*]] = sub nuw nsw i8 8, [[VAL_NUMLEADINGZEROS]], !dbg [[DBG620]]
; LZCNT-NEXT: [[TMP0:%.*]] = sub i8 0, [[EXTRAOFFSET:%.*]], !dbg [[DBG621:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS_OFFSET:%.*]] = add nsw i8 [[VAL_NUMACTIVEBITS]], [[TMP0]], !dbg [[DBG620]]
; LZCNT-NEXT: [[IV_FINAL:%.*]] = call i8 @llvm.smax.i8(i8 [[VAL_NUMACTIVEBITS_OFFSET]], i8 [[START:%.*]]), !dbg [[DBG620]]
; LZCNT-NEXT: [[LOOP_BACKEDGETAKENCOUNT:%.*]] = sub nsw i8 [[IV_FINAL]], [[START]], !dbg [[DBG620]]
; LZCNT-NEXT: [[LOOP_TRIPCOUNT:%.*]] = add nuw nsw i8 [[LOOP_BACKEDGETAKENCOUNT]], 1, !dbg [[DBG620]]
; LZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG621]]
; LZCNT: loop:
; LZCNT-NEXT: [[LOOP_IV:%.*]] = phi i8 [ 0, [[ENTRY:%.*]] ], [ [[LOOP_IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG620]]
; LZCNT-NEXT: [[LOOP_IV_NEXT]] = add nuw nsw i8 [[LOOP_IV]], 1, !dbg [[DBG622:![0-9]+]]
; LZCNT-NEXT: [[LOOP_IVCHECK:%.*]] = icmp eq i8 [[LOOP_IV_NEXT]], [[LOOP_TRIPCOUNT]], !dbg [[DBG622]]
; LZCNT-NEXT: [[IV:%.*]] = add nsw i8 [[LOOP_IV]], [[START]], !dbg [[DBG622]]
; LZCNT-NEXT: #dbg_value(i8 [[IV]], [[META608:![0-9]+]], !DIExpression(), [[DBG620]])
; LZCNT-NEXT: [[NBITS:%.*]] = add nsw i8 [[IV]], [[EXTRAOFFSET]], !dbg [[DBG622]]
; LZCNT-NEXT: #dbg_value(i8 [[NBITS]], [[META609:![0-9]+]], !DIExpression(), [[DBG622]])
; LZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL]], [[NBITS]], !dbg [[DBG623:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META610:![0-9]+]], !DIExpression(), [[DBG623]])
; LZCNT-NEXT: #dbg_value(i1 [[LOOP_IVCHECK]], [[META611:![0-9]+]], !DIExpression(), [[META624:![0-9]+]])
; LZCNT-NEXT: [[NOT_IV_NEXT:%.*]] = add i8 [[IV]], 1, !dbg [[DBG625:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[NOT_IV_NEXT]], [[META612:![0-9]+]], !DIExpression(), [[DBG625]])
; LZCNT-NEXT: [[IV_NEXT:%.*]] = add i8 [[IV]], 1, !dbg [[DBG626:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META613:![0-9]+]], !DIExpression(), [[DBG626]])
; LZCNT-NEXT: [[ALSO_IV_NEXT:%.*]] = add i8 [[IV]], 1, !dbg [[DBG627:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[ALSO_IV_NEXT]], [[META614:![0-9]+]], !DIExpression(), [[DBG627]])
; LZCNT-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[LOOP_IVCHECK]], i8 [[IV_NEXT]]), !dbg [[DBG628:![0-9]+]]
; LZCNT-NEXT: br i1 [[LOOP_IVCHECK]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG629:![0-9]+]]
; LZCNT: end:
; LZCNT-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV_FINAL]], [[LOOP]] ], !dbg [[DBG630:![0-9]+]]
; LZCNT-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG631:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG632:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[LOOP_IVCHECK]], [[LOOP]] ], !dbg [[DBG633:![0-9]+]]
; LZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG634:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[IV_RES]], [[META615:![0-9]+]], !DIExpression(), [[DBG630]])
; LZCNT-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META616:![0-9]+]], !DIExpression(), [[DBG631]])
; LZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META617:![0-9]+]], !DIExpression(), [[DBG632]])
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META618:![0-9]+]], !DIExpression(), [[DBG633]])
; LZCNT-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META619:![0-9]+]], !DIExpression(), [[DBG634]])
; LZCNT-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG635:![0-9]+]]
; LZCNT-NEXT: ret i8 [[IV_RES]], !dbg [[DBG636:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i8 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = add nsw i8 %iv, %extraoffset
%val.shifted = ashr i8 %val, %nbits
%val.shifted.iszero = icmp eq i8 %val.shifted, 0
%not.iv.next = add i8 %iv, 1 ; not used by %iv
%iv.next = add i8 %iv, 1
%also.iv.next = add i8 %iv, 1 ; not used by %iv
call void @escape_inner(i8 %iv, i8 %nbits, i8 %val.shifted, i1 %val.shifted.iszero, i8 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i8 [ %iv, %loop ]
%nbits.res = phi i8 [ %nbits, %loop ]
%val.shifted.res = phi i8 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i8 [ %iv.next, %loop ]
call void @escape_outer(i8 %iv.res, i8 %nbits.res, i8 %val.shifted.res, i1 %val.shifted.iszero.res, i8 %iv.next.res)
ret i8 %iv.res
}
define i8 @n23(i8 %start, i8 %extraoffset) mustprogress {
; CHECK-LABEL: @n23(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]], !dbg [[DBG650:![0-9]+]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG651:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV]], [[META639:![0-9]+]], !DIExpression(), [[DBG651]])
; CHECK-NEXT: [[NBITS:%.*]] = add nsw i8 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG652:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[NBITS]], [[META640:![0-9]+]], !DIExpression(), [[DBG652]])
; CHECK-NEXT: [[VAL:%.*]] = call i8 @gen.i8(), !dbg [[DBG653:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[VAL]], [[META641:![0-9]+]], !DIExpression(), [[DBG653]])
; CHECK-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL]], [[NBITS]], !dbg [[DBG654:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META642:![0-9]+]], !DIExpression(), [[DBG654]])
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i8 [[VAL_SHIFTED]], 0, !dbg [[DBG655:![0-9]+]]
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META643:![0-9]+]], !DIExpression(), [[DBG655]])
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1, !dbg [[DBG656:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META644:![0-9]+]], !DIExpression(), [[DBG656]])
; CHECK-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i8 [[IV_NEXT]]), !dbg [[DBG657:![0-9]+]]
; CHECK-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG658:![0-9]+]]
; CHECK: end:
; CHECK-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV]], [[LOOP]] ], !dbg [[DBG659:![0-9]+]]
; CHECK-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG660:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG661:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG662:![0-9]+]]
; CHECK-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG663:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_RES]], [[META645:![0-9]+]], !DIExpression(), [[DBG659]])
; CHECK-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META646:![0-9]+]], !DIExpression(), [[DBG660]])
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META647:![0-9]+]], !DIExpression(), [[DBG661]])
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META648:![0-9]+]], !DIExpression(), [[DBG662]])
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META649:![0-9]+]], !DIExpression(), [[DBG663]])
; CHECK-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG664:![0-9]+]]
; CHECK-NEXT: ret i8 [[IV_RES]], !dbg [[DBG665:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i8 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = add nsw i8 %iv, %extraoffset
%val = call i8 @gen.i8()
%val.shifted = ashr i8 %val, %nbits
%val.shifted.iszero = icmp eq i8 %val.shifted, 0
%iv.next = add i8 %iv, 1
call void @escape_inner(i8 %iv, i8 %nbits, i8 %val.shifted, i1 %val.shifted.iszero, i8 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i8 [ %iv, %loop ]
%nbits.res = phi i8 [ %nbits, %loop ]
%val.shifted.res = phi i8 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i8 [ %iv.next, %loop ]
call void @escape_outer(i8 %iv.res, i8 %nbits.res, i8 %val.shifted.res, i1 %val.shifted.iszero.res, i8 %iv.next.res)
ret i8 %iv.res
}
; Tests with some small bit widths
declare void @escape_inner.i1(i1, i1, i1, i1, i1)
declare void @escape_outer.i1(i1, i1, i1, i1, i1)
declare void @escape_inner.i2(i2, i2, i2, i1, i2)
declare void @escape_outer.i2(i2, i2, i2, i1, i2)
declare void @escape_inner.i3(i3, i3, i3, i1, i3)
declare void @escape_outer.i3(i3, i3, i3, i1, i3)
define i1 @t24_nooffset_i1(i1 %val, i1 %start) mustprogress {
; NOLZCNT-LABEL: @t24_nooffset_i1(
; NOLZCNT-NEXT: entry:
; NOLZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG676:![0-9]+]]
; NOLZCNT: loop:
; NOLZCNT-NEXT: [[IV:%.*]] = phi i1 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG677:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[IV]], [[META668:![0-9]+]], !DIExpression(), [[DBG677]])
; NOLZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i1 [[VAL:%.*]], [[IV]], !dbg [[DBG678:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED]], [[META669:![0-9]+]], !DIExpression(), [[DBG678]])
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i1 [[VAL_SHIFTED]], false, !dbg [[DBG679:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META670:![0-9]+]], !DIExpression(), [[DBG679]])
; NOLZCNT-NEXT: [[IV_NEXT]] = add i1 [[IV]], true, !dbg [[DBG680:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[IV_NEXT]], [[META671:![0-9]+]], !DIExpression(), [[DBG680]])
; NOLZCNT-NEXT: call void @escape_inner.i1(i1 [[IV]], i1 [[IV]], i1 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i1 [[IV_NEXT]]), !dbg [[DBG681:![0-9]+]]
; NOLZCNT-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG682:![0-9]+]]
; NOLZCNT: end:
; NOLZCNT-NEXT: [[IV_RES:%.*]] = phi i1 [ [[IV]], [[LOOP]] ], !dbg [[DBG683:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i1 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG684:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG685:![0-9]+]]
; NOLZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i1 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG686:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[IV_RES]], [[META672:![0-9]+]], !DIExpression(), [[DBG683]])
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_RES]], [[META673:![0-9]+]], !DIExpression(), [[DBG684]])
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META674:![0-9]+]], !DIExpression(), [[DBG685]])
; NOLZCNT-NEXT: #dbg_value(i1 [[IV_NEXT_RES]], [[META675:![0-9]+]], !DIExpression(), [[DBG686]])
; NOLZCNT-NEXT: call void @escape_outer.i1(i1 [[IV_RES]], i1 [[IV_RES]], i1 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i1 [[IV_NEXT_RES]]), !dbg [[DBG687:![0-9]+]]
; NOLZCNT-NEXT: ret i1 [[IV_RES]], !dbg [[DBG688:![0-9]+]]
;
; LZCNT-LABEL: @t24_nooffset_i1(
; LZCNT-NEXT: entry:
; LZCNT-NEXT: [[VAL_NUMLEADINGZEROS:%.*]] = call i1 @llvm.ctlz.i1(i1 [[VAL:%.*]], i1 false), !dbg [[DBG676:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS:%.*]] = sub nuw nsw i1 true, [[VAL_NUMLEADINGZEROS]], !dbg [[DBG676]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS_OFFSET:%.*]] = add nuw nsw i1 [[VAL_NUMACTIVEBITS]], false, !dbg [[DBG676]]
; LZCNT-NEXT: [[IV_FINAL:%.*]] = call i1 @llvm.smax.i1(i1 [[VAL_NUMACTIVEBITS_OFFSET]], i1 [[START:%.*]]), !dbg [[DBG676]]
; LZCNT-NEXT: [[LOOP_BACKEDGETAKENCOUNT:%.*]] = sub nuw nsw i1 [[IV_FINAL]], [[START]], !dbg [[DBG676]]
; LZCNT-NEXT: [[LOOP_TRIPCOUNT:%.*]] = add nuw nsw i1 [[LOOP_BACKEDGETAKENCOUNT]], true, !dbg [[DBG676]]
; LZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG677:![0-9]+]]
; LZCNT: loop:
; LZCNT-NEXT: [[LOOP_IV:%.*]] = phi i1 [ false, [[ENTRY:%.*]] ], [ [[LOOP_IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG676]]
; LZCNT-NEXT: [[LOOP_IV_NEXT]] = add nuw nsw i1 [[LOOP_IV]], true, !dbg [[DBG678:![0-9]+]]
; LZCNT-NEXT: [[LOOP_IVCHECK:%.*]] = icmp eq i1 [[LOOP_IV_NEXT]], [[LOOP_TRIPCOUNT]], !dbg [[DBG678]]
; LZCNT-NEXT: [[IV:%.*]] = add nsw i1 [[LOOP_IV]], [[START]], !dbg [[DBG678]]
; LZCNT-NEXT: #dbg_value(i1 [[IV]], [[META668:![0-9]+]], !DIExpression(), [[DBG676]])
; LZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i1 [[VAL]], [[IV]], !dbg [[DBG678]]
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED]], [[META669:![0-9]+]], !DIExpression(), [[DBG678]])
; LZCNT-NEXT: #dbg_value(i1 [[LOOP_IVCHECK]], [[META670:![0-9]+]], !DIExpression(), [[META679:![0-9]+]])
; LZCNT-NEXT: [[IV_NEXT:%.*]] = add i1 [[IV]], true, !dbg [[DBG680:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i1 [[IV_NEXT]], [[META671:![0-9]+]], !DIExpression(), [[DBG680]])
; LZCNT-NEXT: call void @escape_inner.i1(i1 [[IV]], i1 [[IV]], i1 [[VAL_SHIFTED]], i1 [[LOOP_IVCHECK]], i1 [[IV_NEXT]]), !dbg [[DBG681:![0-9]+]]
; LZCNT-NEXT: br i1 [[LOOP_IVCHECK]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG682:![0-9]+]]
; LZCNT: end:
; LZCNT-NEXT: [[IV_RES:%.*]] = phi i1 [ [[IV_FINAL]], [[LOOP]] ], !dbg [[DBG683:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i1 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG684:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[LOOP_IVCHECK]], [[LOOP]] ], !dbg [[DBG685:![0-9]+]]
; LZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i1 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG686:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i1 [[IV_RES]], [[META672:![0-9]+]], !DIExpression(), [[DBG683]])
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_RES]], [[META673:![0-9]+]], !DIExpression(), [[DBG684]])
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META674:![0-9]+]], !DIExpression(), [[DBG685]])
; LZCNT-NEXT: #dbg_value(i1 [[IV_NEXT_RES]], [[META675:![0-9]+]], !DIExpression(), [[DBG686]])
; LZCNT-NEXT: call void @escape_outer.i1(i1 [[IV_RES]], i1 [[IV_RES]], i1 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i1 [[IV_NEXT_RES]]), !dbg [[DBG687:![0-9]+]]
; LZCNT-NEXT: ret i1 [[IV_RES]], !dbg [[DBG688:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i1 [ %start, %entry ], [ %iv.next, %loop ]
%val.shifted = ashr i1 %val, %iv
%val.shifted.iszero = icmp eq i1 %val.shifted, 0
%iv.next = add i1 %iv, 1
call void @escape_inner.i1(i1 %iv, i1 %iv, i1 %val.shifted, i1 %val.shifted.iszero, i1 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i1 [ %iv, %loop ]
%val.shifted.res = phi i1 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i1 [ %iv.next, %loop ]
call void @escape_outer.i1(i1 %iv.res, i1 %iv.res, i1 %val.shifted.res, i1 %val.shifted.iszero.res, i1 %iv.next.res)
ret i1 %iv.res
}
define i2 @t25_nooffset_i2(i2 %val, i2 %start) mustprogress {
; NOLZCNT-LABEL: @t25_nooffset_i2(
; NOLZCNT-NEXT: entry:
; NOLZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG699:![0-9]+]]
; NOLZCNT: loop:
; NOLZCNT-NEXT: [[IV:%.*]] = phi i2 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG700:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i2 [[IV]], [[META691:![0-9]+]], !DIExpression(), [[DBG700]])
; NOLZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i2 [[VAL:%.*]], [[IV]], !dbg [[DBG701:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i2 [[VAL_SHIFTED]], [[META692:![0-9]+]], !DIExpression(), [[DBG701]])
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i2 [[VAL_SHIFTED]], 0, !dbg [[DBG702:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META693:![0-9]+]], !DIExpression(), [[DBG702]])
; NOLZCNT-NEXT: [[IV_NEXT]] = add i2 [[IV]], 1, !dbg [[DBG703:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i2 [[IV_NEXT]], [[META694:![0-9]+]], !DIExpression(), [[DBG703]])
; NOLZCNT-NEXT: call void @escape_inner.i2(i2 [[IV]], i2 [[IV]], i2 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i2 [[IV_NEXT]]), !dbg [[DBG704:![0-9]+]]
; NOLZCNT-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG705:![0-9]+]]
; NOLZCNT: end:
; NOLZCNT-NEXT: [[IV_RES:%.*]] = phi i2 [ [[IV]], [[LOOP]] ], !dbg [[DBG706:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i2 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG707:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG708:![0-9]+]]
; NOLZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i2 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG709:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i2 [[IV_RES]], [[META695:![0-9]+]], !DIExpression(), [[DBG706]])
; NOLZCNT-NEXT: #dbg_value(i2 [[VAL_SHIFTED_RES]], [[META696:![0-9]+]], !DIExpression(), [[DBG707]])
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META697:![0-9]+]], !DIExpression(), [[DBG708]])
; NOLZCNT-NEXT: #dbg_value(i2 [[IV_NEXT_RES]], [[META698:![0-9]+]], !DIExpression(), [[DBG709]])
; NOLZCNT-NEXT: call void @escape_outer.i2(i2 [[IV_RES]], i2 [[IV_RES]], i2 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i2 [[IV_NEXT_RES]]), !dbg [[DBG710:![0-9]+]]
; NOLZCNT-NEXT: ret i2 [[IV_RES]], !dbg [[DBG711:![0-9]+]]
;
; LZCNT-LABEL: @t25_nooffset_i2(
; LZCNT-NEXT: entry:
; LZCNT-NEXT: [[VAL_NUMLEADINGZEROS:%.*]] = call i2 @llvm.ctlz.i2(i2 [[VAL:%.*]], i1 false), !dbg [[DBG699:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS:%.*]] = sub nuw i2 -2, [[VAL_NUMLEADINGZEROS]], !dbg [[DBG699]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS_OFFSET:%.*]] = add nuw nsw i2 [[VAL_NUMACTIVEBITS]], 0, !dbg [[DBG699]]
; LZCNT-NEXT: [[IV_FINAL:%.*]] = call i2 @llvm.smax.i2(i2 [[VAL_NUMACTIVEBITS_OFFSET]], i2 [[START:%.*]]), !dbg [[DBG699]]
; LZCNT-NEXT: [[LOOP_BACKEDGETAKENCOUNT:%.*]] = sub nuw nsw i2 [[IV_FINAL]], [[START]], !dbg [[DBG699]]
; LZCNT-NEXT: [[LOOP_TRIPCOUNT:%.*]] = add nuw i2 [[LOOP_BACKEDGETAKENCOUNT]], 1, !dbg [[DBG699]]
; LZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG700:![0-9]+]]
; LZCNT: loop:
; LZCNT-NEXT: [[LOOP_IV:%.*]] = phi i2 [ 0, [[ENTRY:%.*]] ], [ [[LOOP_IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG699]]
; LZCNT-NEXT: [[LOOP_IV_NEXT]] = add nuw i2 [[LOOP_IV]], 1, !dbg [[DBG701:![0-9]+]]
; LZCNT-NEXT: [[LOOP_IVCHECK:%.*]] = icmp eq i2 [[LOOP_IV_NEXT]], [[LOOP_TRIPCOUNT]], !dbg [[DBG701]]
; LZCNT-NEXT: [[IV:%.*]] = add nsw i2 [[LOOP_IV]], [[START]], !dbg [[DBG701]]
; LZCNT-NEXT: #dbg_value(i2 [[IV]], [[META691:![0-9]+]], !DIExpression(), [[DBG699]])
; LZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i2 [[VAL]], [[IV]], !dbg [[DBG701]]
; LZCNT-NEXT: #dbg_value(i2 [[VAL_SHIFTED]], [[META692:![0-9]+]], !DIExpression(), [[DBG701]])
; LZCNT-NEXT: #dbg_value(i1 [[LOOP_IVCHECK]], [[META693:![0-9]+]], !DIExpression(), [[META702:![0-9]+]])
; LZCNT-NEXT: [[IV_NEXT:%.*]] = add i2 [[IV]], 1, !dbg [[DBG703:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i2 [[IV_NEXT]], [[META694:![0-9]+]], !DIExpression(), [[DBG703]])
; LZCNT-NEXT: call void @escape_inner.i2(i2 [[IV]], i2 [[IV]], i2 [[VAL_SHIFTED]], i1 [[LOOP_IVCHECK]], i2 [[IV_NEXT]]), !dbg [[DBG704:![0-9]+]]
; LZCNT-NEXT: br i1 [[LOOP_IVCHECK]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG705:![0-9]+]]
; LZCNT: end:
; LZCNT-NEXT: [[IV_RES:%.*]] = phi i2 [ [[IV_FINAL]], [[LOOP]] ], !dbg [[DBG706:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i2 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG707:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[LOOP_IVCHECK]], [[LOOP]] ], !dbg [[DBG708:![0-9]+]]
; LZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i2 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG709:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i2 [[IV_RES]], [[META695:![0-9]+]], !DIExpression(), [[DBG706]])
; LZCNT-NEXT: #dbg_value(i2 [[VAL_SHIFTED_RES]], [[META696:![0-9]+]], !DIExpression(), [[DBG707]])
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META697:![0-9]+]], !DIExpression(), [[DBG708]])
; LZCNT-NEXT: #dbg_value(i2 [[IV_NEXT_RES]], [[META698:![0-9]+]], !DIExpression(), [[DBG709]])
; LZCNT-NEXT: call void @escape_outer.i2(i2 [[IV_RES]], i2 [[IV_RES]], i2 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i2 [[IV_NEXT_RES]]), !dbg [[DBG710:![0-9]+]]
; LZCNT-NEXT: ret i2 [[IV_RES]], !dbg [[DBG711:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i2 [ %start, %entry ], [ %iv.next, %loop ]
%val.shifted = ashr i2 %val, %iv
%val.shifted.iszero = icmp eq i2 %val.shifted, 0
%iv.next = add i2 %iv, 1
call void @escape_inner.i2(i2 %iv, i2 %iv, i2 %val.shifted, i1 %val.shifted.iszero, i2 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i2 [ %iv, %loop ]
%val.shifted.res = phi i2 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i2 [ %iv.next, %loop ]
call void @escape_outer.i2(i2 %iv.res, i2 %iv.res, i2 %val.shifted.res, i1 %val.shifted.iszero.res, i2 %iv.next.res)
ret i2 %iv.res
}
define i3 @t26_nooffset_i3(i3 %val, i3 %start) mustprogress {
; NOLZCNT-LABEL: @t26_nooffset_i3(
; NOLZCNT-NEXT: entry:
; NOLZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG722:![0-9]+]]
; NOLZCNT: loop:
; NOLZCNT-NEXT: [[IV:%.*]] = phi i3 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG723:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i3 [[IV]], [[META714:![0-9]+]], !DIExpression(), [[DBG723]])
; NOLZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i3 [[VAL:%.*]], [[IV]], !dbg [[DBG724:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i3 [[VAL_SHIFTED]], [[META715:![0-9]+]], !DIExpression(), [[DBG724]])
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i3 [[VAL_SHIFTED]], 0, !dbg [[DBG725:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META716:![0-9]+]], !DIExpression(), [[DBG725]])
; NOLZCNT-NEXT: [[IV_NEXT]] = add i3 [[IV]], 1, !dbg [[DBG726:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i3 [[IV_NEXT]], [[META717:![0-9]+]], !DIExpression(), [[DBG726]])
; NOLZCNT-NEXT: call void @escape_inner.i3(i3 [[IV]], i3 [[IV]], i3 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i3 [[IV_NEXT]]), !dbg [[DBG727:![0-9]+]]
; NOLZCNT-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG728:![0-9]+]]
; NOLZCNT: end:
; NOLZCNT-NEXT: [[IV_RES:%.*]] = phi i3 [ [[IV]], [[LOOP]] ], !dbg [[DBG729:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i3 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG730:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG731:![0-9]+]]
; NOLZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i3 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG732:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i3 [[IV_RES]], [[META718:![0-9]+]], !DIExpression(), [[DBG729]])
; NOLZCNT-NEXT: #dbg_value(i3 [[VAL_SHIFTED_RES]], [[META719:![0-9]+]], !DIExpression(), [[DBG730]])
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META720:![0-9]+]], !DIExpression(), [[DBG731]])
; NOLZCNT-NEXT: #dbg_value(i3 [[IV_NEXT_RES]], [[META721:![0-9]+]], !DIExpression(), [[DBG732]])
; NOLZCNT-NEXT: call void @escape_outer.i3(i3 [[IV_RES]], i3 [[IV_RES]], i3 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i3 [[IV_NEXT_RES]]), !dbg [[DBG733:![0-9]+]]
; NOLZCNT-NEXT: ret i3 [[IV_RES]], !dbg [[DBG734:![0-9]+]]
;
; LZCNT-LABEL: @t26_nooffset_i3(
; LZCNT-NEXT: entry:
; LZCNT-NEXT: [[VAL_NUMLEADINGZEROS:%.*]] = call i3 @llvm.ctlz.i3(i3 [[VAL:%.*]], i1 false), !dbg [[DBG722:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS:%.*]] = sub nuw nsw i3 3, [[VAL_NUMLEADINGZEROS]], !dbg [[DBG722]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS_OFFSET:%.*]] = add nuw nsw i3 [[VAL_NUMACTIVEBITS]], 0, !dbg [[DBG722]]
; LZCNT-NEXT: [[IV_FINAL:%.*]] = call i3 @llvm.smax.i3(i3 [[VAL_NUMACTIVEBITS_OFFSET]], i3 [[START:%.*]]), !dbg [[DBG722]]
; LZCNT-NEXT: [[LOOP_BACKEDGETAKENCOUNT:%.*]] = sub nuw nsw i3 [[IV_FINAL]], [[START]], !dbg [[DBG722]]
; LZCNT-NEXT: [[LOOP_TRIPCOUNT:%.*]] = add nuw nsw i3 [[LOOP_BACKEDGETAKENCOUNT]], 1, !dbg [[DBG722]]
; LZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG723:![0-9]+]]
; LZCNT: loop:
; LZCNT-NEXT: [[LOOP_IV:%.*]] = phi i3 [ 0, [[ENTRY:%.*]] ], [ [[LOOP_IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG722]]
; LZCNT-NEXT: [[LOOP_IV_NEXT]] = add nuw nsw i3 [[LOOP_IV]], 1, !dbg [[DBG724:![0-9]+]]
; LZCNT-NEXT: [[LOOP_IVCHECK:%.*]] = icmp eq i3 [[LOOP_IV_NEXT]], [[LOOP_TRIPCOUNT]], !dbg [[DBG724]]
; LZCNT-NEXT: [[IV:%.*]] = add nsw i3 [[LOOP_IV]], [[START]], !dbg [[DBG724]]
; LZCNT-NEXT: #dbg_value(i3 [[IV]], [[META714:![0-9]+]], !DIExpression(), [[DBG722]])
; LZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i3 [[VAL]], [[IV]], !dbg [[DBG724]]
; LZCNT-NEXT: #dbg_value(i3 [[VAL_SHIFTED]], [[META715:![0-9]+]], !DIExpression(), [[DBG724]])
; LZCNT-NEXT: #dbg_value(i1 [[LOOP_IVCHECK]], [[META716:![0-9]+]], !DIExpression(), [[META725:![0-9]+]])
; LZCNT-NEXT: [[IV_NEXT:%.*]] = add i3 [[IV]], 1, !dbg [[DBG726:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i3 [[IV_NEXT]], [[META717:![0-9]+]], !DIExpression(), [[DBG726]])
; LZCNT-NEXT: call void @escape_inner.i3(i3 [[IV]], i3 [[IV]], i3 [[VAL_SHIFTED]], i1 [[LOOP_IVCHECK]], i3 [[IV_NEXT]]), !dbg [[DBG727:![0-9]+]]
; LZCNT-NEXT: br i1 [[LOOP_IVCHECK]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG728:![0-9]+]]
; LZCNT: end:
; LZCNT-NEXT: [[IV_RES:%.*]] = phi i3 [ [[IV_FINAL]], [[LOOP]] ], !dbg [[DBG729:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i3 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG730:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[LOOP_IVCHECK]], [[LOOP]] ], !dbg [[DBG731:![0-9]+]]
; LZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i3 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG732:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i3 [[IV_RES]], [[META718:![0-9]+]], !DIExpression(), [[DBG729]])
; LZCNT-NEXT: #dbg_value(i3 [[VAL_SHIFTED_RES]], [[META719:![0-9]+]], !DIExpression(), [[DBG730]])
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META720:![0-9]+]], !DIExpression(), [[DBG731]])
; LZCNT-NEXT: #dbg_value(i3 [[IV_NEXT_RES]], [[META721:![0-9]+]], !DIExpression(), [[DBG732]])
; LZCNT-NEXT: call void @escape_outer.i3(i3 [[IV_RES]], i3 [[IV_RES]], i3 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i3 [[IV_NEXT_RES]]), !dbg [[DBG733:![0-9]+]]
; LZCNT-NEXT: ret i3 [[IV_RES]], !dbg [[DBG734:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i3 [ %start, %entry ], [ %iv.next, %loop ]
%val.shifted = ashr i3 %val, %iv
%val.shifted.iszero = icmp eq i3 %val.shifted, 0
%iv.next = add i3 %iv, 1
call void @escape_inner.i3(i3 %iv, i3 %iv, i3 %val.shifted, i1 %val.shifted.iszero, i3 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i3 [ %iv, %loop ]
%val.shifted.res = phi i3 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i3 [ %iv.next, %loop ]
call void @escape_outer.i3(i3 %iv.res, i3 %iv.res, i3 %val.shifted.res, i1 %val.shifted.iszero.res, i3 %iv.next.res)
ret i3 %iv.res
}
define i1 @t27_addnsw_i1(i1 %val, i1 %start, i1 %extraoffset) mustprogress {
; NOLZCNT-LABEL: @t27_addnsw_i1(
; NOLZCNT-NEXT: entry:
; NOLZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG747:![0-9]+]]
; NOLZCNT: loop:
; NOLZCNT-NEXT: [[IV:%.*]] = phi i1 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG748:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[IV]], [[META737:![0-9]+]], !DIExpression(), [[DBG748]])
; NOLZCNT-NEXT: [[NBITS:%.*]] = add nsw i1 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG749:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[NBITS]], [[META738:![0-9]+]], !DIExpression(), [[DBG749]])
; NOLZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i1 [[VAL:%.*]], [[NBITS]], !dbg [[DBG750:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED]], [[META739:![0-9]+]], !DIExpression(), [[DBG750]])
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i1 [[VAL_SHIFTED]], false, !dbg [[DBG751:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META740:![0-9]+]], !DIExpression(), [[DBG751]])
; NOLZCNT-NEXT: [[IV_NEXT]] = add i1 [[IV]], true, !dbg [[DBG752:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[IV_NEXT]], [[META741:![0-9]+]], !DIExpression(), [[DBG752]])
; NOLZCNT-NEXT: call void @escape_inner.i1(i1 [[IV]], i1 [[NBITS]], i1 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i1 [[IV_NEXT]]), !dbg [[DBG753:![0-9]+]]
; NOLZCNT-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG754:![0-9]+]]
; NOLZCNT: end:
; NOLZCNT-NEXT: [[IV_RES:%.*]] = phi i1 [ [[IV]], [[LOOP]] ], !dbg [[DBG755:![0-9]+]]
; NOLZCNT-NEXT: [[NBITS_RES:%.*]] = phi i1 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG756:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i1 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG757:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG758:![0-9]+]]
; NOLZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i1 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG759:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[IV_RES]], [[META742:![0-9]+]], !DIExpression(), [[DBG755]])
; NOLZCNT-NEXT: #dbg_value(i1 [[NBITS_RES]], [[META743:![0-9]+]], !DIExpression(), [[DBG756]])
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_RES]], [[META744:![0-9]+]], !DIExpression(), [[DBG757]])
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META745:![0-9]+]], !DIExpression(), [[DBG758]])
; NOLZCNT-NEXT: #dbg_value(i1 [[IV_NEXT_RES]], [[META746:![0-9]+]], !DIExpression(), [[DBG759]])
; NOLZCNT-NEXT: call void @escape_outer.i1(i1 [[IV_RES]], i1 [[NBITS_RES]], i1 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i1 [[IV_NEXT_RES]]), !dbg [[DBG760:![0-9]+]]
; NOLZCNT-NEXT: ret i1 [[IV_RES]], !dbg [[DBG761:![0-9]+]]
;
; LZCNT-LABEL: @t27_addnsw_i1(
; LZCNT-NEXT: entry:
; LZCNT-NEXT: [[VAL_NUMLEADINGZEROS:%.*]] = call i1 @llvm.ctlz.i1(i1 [[VAL:%.*]], i1 false), !dbg [[DBG747:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS:%.*]] = sub nuw nsw i1 true, [[VAL_NUMLEADINGZEROS]], !dbg [[DBG747]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS_OFFSET:%.*]] = add nsw i1 [[VAL_NUMACTIVEBITS]], [[EXTRAOFFSET:%.*]], !dbg [[DBG747]]
; LZCNT-NEXT: [[IV_FINAL:%.*]] = call i1 @llvm.smax.i1(i1 [[VAL_NUMACTIVEBITS_OFFSET]], i1 [[START:%.*]]), !dbg [[DBG747]]
; LZCNT-NEXT: [[LOOP_BACKEDGETAKENCOUNT:%.*]] = sub nsw i1 [[IV_FINAL]], [[START]], !dbg [[DBG747]]
; LZCNT-NEXT: [[LOOP_TRIPCOUNT:%.*]] = add nuw nsw i1 [[LOOP_BACKEDGETAKENCOUNT]], true, !dbg [[DBG747]]
; LZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG748:![0-9]+]]
; LZCNT: loop:
; LZCNT-NEXT: [[LOOP_IV:%.*]] = phi i1 [ false, [[ENTRY:%.*]] ], [ [[LOOP_IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG747]]
; LZCNT-NEXT: [[LOOP_IV_NEXT]] = add nuw nsw i1 [[LOOP_IV]], true, !dbg [[DBG749:![0-9]+]]
; LZCNT-NEXT: [[LOOP_IVCHECK:%.*]] = icmp eq i1 [[LOOP_IV_NEXT]], [[LOOP_TRIPCOUNT]], !dbg [[DBG749]]
; LZCNT-NEXT: [[IV:%.*]] = add nsw i1 [[LOOP_IV]], [[START]], !dbg [[DBG749]]
; LZCNT-NEXT: #dbg_value(i1 [[IV]], [[META737:![0-9]+]], !DIExpression(), [[DBG747]])
; LZCNT-NEXT: [[NBITS:%.*]] = add nsw i1 [[IV]], [[EXTRAOFFSET]], !dbg [[DBG749]]
; LZCNT-NEXT: #dbg_value(i1 [[NBITS]], [[META738:![0-9]+]], !DIExpression(), [[DBG749]])
; LZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i1 [[VAL]], [[NBITS]], !dbg [[DBG750:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED]], [[META739:![0-9]+]], !DIExpression(), [[DBG750]])
; LZCNT-NEXT: #dbg_value(i1 [[LOOP_IVCHECK]], [[META740:![0-9]+]], !DIExpression(), [[META751:![0-9]+]])
; LZCNT-NEXT: [[IV_NEXT:%.*]] = add i1 [[IV]], true, !dbg [[DBG752:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i1 [[IV_NEXT]], [[META741:![0-9]+]], !DIExpression(), [[DBG752]])
; LZCNT-NEXT: call void @escape_inner.i1(i1 [[IV]], i1 [[NBITS]], i1 [[VAL_SHIFTED]], i1 [[LOOP_IVCHECK]], i1 [[IV_NEXT]]), !dbg [[DBG753:![0-9]+]]
; LZCNT-NEXT: br i1 [[LOOP_IVCHECK]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG754:![0-9]+]]
; LZCNT: end:
; LZCNT-NEXT: [[IV_RES:%.*]] = phi i1 [ [[IV_FINAL]], [[LOOP]] ], !dbg [[DBG755:![0-9]+]]
; LZCNT-NEXT: [[NBITS_RES:%.*]] = phi i1 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG756:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i1 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG757:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[LOOP_IVCHECK]], [[LOOP]] ], !dbg [[DBG758:![0-9]+]]
; LZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i1 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG759:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i1 [[IV_RES]], [[META742:![0-9]+]], !DIExpression(), [[DBG755]])
; LZCNT-NEXT: #dbg_value(i1 [[NBITS_RES]], [[META743:![0-9]+]], !DIExpression(), [[DBG756]])
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_RES]], [[META744:![0-9]+]], !DIExpression(), [[DBG757]])
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META745:![0-9]+]], !DIExpression(), [[DBG758]])
; LZCNT-NEXT: #dbg_value(i1 [[IV_NEXT_RES]], [[META746:![0-9]+]], !DIExpression(), [[DBG759]])
; LZCNT-NEXT: call void @escape_outer.i1(i1 [[IV_RES]], i1 [[NBITS_RES]], i1 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i1 [[IV_NEXT_RES]]), !dbg [[DBG760:![0-9]+]]
; LZCNT-NEXT: ret i1 [[IV_RES]], !dbg [[DBG761:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i1 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = add nsw i1 %iv, %extraoffset
%val.shifted = ashr i1 %val, %nbits
%val.shifted.iszero = icmp eq i1 %val.shifted, 0
%iv.next = add i1 %iv, 1
call void @escape_inner.i1(i1 %iv, i1 %nbits, i1 %val.shifted, i1 %val.shifted.iszero, i1 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i1 [ %iv, %loop ]
%nbits.res = phi i1 [ %nbits, %loop ]
%val.shifted.res = phi i1 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i1 [ %iv.next, %loop ]
call void @escape_outer.i1(i1 %iv.res, i1 %nbits.res, i1 %val.shifted.res, i1 %val.shifted.iszero.res, i1 %iv.next.res)
ret i1 %iv.res
}
define i2 @t28_addnsw_i2(i2 %val, i2 %start, i2 %extraoffset) mustprogress {
; NOLZCNT-LABEL: @t28_addnsw_i2(
; NOLZCNT-NEXT: entry:
; NOLZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG774:![0-9]+]]
; NOLZCNT: loop:
; NOLZCNT-NEXT: [[IV:%.*]] = phi i2 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG775:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i2 [[IV]], [[META764:![0-9]+]], !DIExpression(), [[DBG775]])
; NOLZCNT-NEXT: [[NBITS:%.*]] = add nsw i2 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG776:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i2 [[NBITS]], [[META765:![0-9]+]], !DIExpression(), [[DBG776]])
; NOLZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i2 [[VAL:%.*]], [[NBITS]], !dbg [[DBG777:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i2 [[VAL_SHIFTED]], [[META766:![0-9]+]], !DIExpression(), [[DBG777]])
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i2 [[VAL_SHIFTED]], 0, !dbg [[DBG778:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META767:![0-9]+]], !DIExpression(), [[DBG778]])
; NOLZCNT-NEXT: [[IV_NEXT]] = add i2 [[IV]], 1, !dbg [[DBG779:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i2 [[IV_NEXT]], [[META768:![0-9]+]], !DIExpression(), [[DBG779]])
; NOLZCNT-NEXT: call void @escape_inner.i2(i2 [[IV]], i2 [[NBITS]], i2 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i2 [[IV_NEXT]]), !dbg [[DBG780:![0-9]+]]
; NOLZCNT-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG781:![0-9]+]]
; NOLZCNT: end:
; NOLZCNT-NEXT: [[IV_RES:%.*]] = phi i2 [ [[IV]], [[LOOP]] ], !dbg [[DBG782:![0-9]+]]
; NOLZCNT-NEXT: [[NBITS_RES:%.*]] = phi i2 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG783:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i2 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG784:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG785:![0-9]+]]
; NOLZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i2 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG786:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i2 [[IV_RES]], [[META769:![0-9]+]], !DIExpression(), [[DBG782]])
; NOLZCNT-NEXT: #dbg_value(i2 [[NBITS_RES]], [[META770:![0-9]+]], !DIExpression(), [[DBG783]])
; NOLZCNT-NEXT: #dbg_value(i2 [[VAL_SHIFTED_RES]], [[META771:![0-9]+]], !DIExpression(), [[DBG784]])
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META772:![0-9]+]], !DIExpression(), [[DBG785]])
; NOLZCNT-NEXT: #dbg_value(i2 [[IV_NEXT_RES]], [[META773:![0-9]+]], !DIExpression(), [[DBG786]])
; NOLZCNT-NEXT: call void @escape_outer.i2(i2 [[IV_RES]], i2 [[NBITS_RES]], i2 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i2 [[IV_NEXT_RES]]), !dbg [[DBG787:![0-9]+]]
; NOLZCNT-NEXT: ret i2 [[IV_RES]], !dbg [[DBG788:![0-9]+]]
;
; LZCNT-LABEL: @t28_addnsw_i2(
; LZCNT-NEXT: entry:
; LZCNT-NEXT: [[VAL_NUMLEADINGZEROS:%.*]] = call i2 @llvm.ctlz.i2(i2 [[VAL:%.*]], i1 false), !dbg [[DBG774:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS:%.*]] = sub nuw i2 -2, [[VAL_NUMLEADINGZEROS]], !dbg [[DBG774]]
; LZCNT-NEXT: [[TMP0:%.*]] = sub i2 0, [[EXTRAOFFSET:%.*]], !dbg [[DBG775:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS_OFFSET:%.*]] = add nsw i2 [[VAL_NUMACTIVEBITS]], [[TMP0]], !dbg [[DBG774]]
; LZCNT-NEXT: [[IV_FINAL:%.*]] = call i2 @llvm.smax.i2(i2 [[VAL_NUMACTIVEBITS_OFFSET]], i2 [[START:%.*]]), !dbg [[DBG774]]
; LZCNT-NEXT: [[LOOP_BACKEDGETAKENCOUNT:%.*]] = sub nsw i2 [[IV_FINAL]], [[START]], !dbg [[DBG774]]
; LZCNT-NEXT: [[LOOP_TRIPCOUNT:%.*]] = add nuw i2 [[LOOP_BACKEDGETAKENCOUNT]], 1, !dbg [[DBG774]]
; LZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG775]]
; LZCNT: loop:
; LZCNT-NEXT: [[LOOP_IV:%.*]] = phi i2 [ 0, [[ENTRY:%.*]] ], [ [[LOOP_IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG774]]
; LZCNT-NEXT: [[LOOP_IV_NEXT]] = add nuw i2 [[LOOP_IV]], 1, !dbg [[DBG776:![0-9]+]]
; LZCNT-NEXT: [[LOOP_IVCHECK:%.*]] = icmp eq i2 [[LOOP_IV_NEXT]], [[LOOP_TRIPCOUNT]], !dbg [[DBG776]]
; LZCNT-NEXT: [[IV:%.*]] = add nsw i2 [[LOOP_IV]], [[START]], !dbg [[DBG776]]
; LZCNT-NEXT: #dbg_value(i2 [[IV]], [[META764:![0-9]+]], !DIExpression(), [[DBG774]])
; LZCNT-NEXT: [[NBITS:%.*]] = add nsw i2 [[IV]], [[EXTRAOFFSET]], !dbg [[DBG776]]
; LZCNT-NEXT: #dbg_value(i2 [[NBITS]], [[META765:![0-9]+]], !DIExpression(), [[DBG776]])
; LZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i2 [[VAL]], [[NBITS]], !dbg [[DBG777:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i2 [[VAL_SHIFTED]], [[META766:![0-9]+]], !DIExpression(), [[DBG777]])
; LZCNT-NEXT: #dbg_value(i1 [[LOOP_IVCHECK]], [[META767:![0-9]+]], !DIExpression(), [[META778:![0-9]+]])
; LZCNT-NEXT: [[IV_NEXT:%.*]] = add i2 [[IV]], 1, !dbg [[DBG779:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i2 [[IV_NEXT]], [[META768:![0-9]+]], !DIExpression(), [[DBG779]])
; LZCNT-NEXT: call void @escape_inner.i2(i2 [[IV]], i2 [[NBITS]], i2 [[VAL_SHIFTED]], i1 [[LOOP_IVCHECK]], i2 [[IV_NEXT]]), !dbg [[DBG780:![0-9]+]]
; LZCNT-NEXT: br i1 [[LOOP_IVCHECK]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG781:![0-9]+]]
; LZCNT: end:
; LZCNT-NEXT: [[IV_RES:%.*]] = phi i2 [ [[IV_FINAL]], [[LOOP]] ], !dbg [[DBG782:![0-9]+]]
; LZCNT-NEXT: [[NBITS_RES:%.*]] = phi i2 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG783:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i2 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG784:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[LOOP_IVCHECK]], [[LOOP]] ], !dbg [[DBG785:![0-9]+]]
; LZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i2 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG786:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i2 [[IV_RES]], [[META769:![0-9]+]], !DIExpression(), [[DBG782]])
; LZCNT-NEXT: #dbg_value(i2 [[NBITS_RES]], [[META770:![0-9]+]], !DIExpression(), [[DBG783]])
; LZCNT-NEXT: #dbg_value(i2 [[VAL_SHIFTED_RES]], [[META771:![0-9]+]], !DIExpression(), [[DBG784]])
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META772:![0-9]+]], !DIExpression(), [[DBG785]])
; LZCNT-NEXT: #dbg_value(i2 [[IV_NEXT_RES]], [[META773:![0-9]+]], !DIExpression(), [[DBG786]])
; LZCNT-NEXT: call void @escape_outer.i2(i2 [[IV_RES]], i2 [[NBITS_RES]], i2 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i2 [[IV_NEXT_RES]]), !dbg [[DBG787:![0-9]+]]
; LZCNT-NEXT: ret i2 [[IV_RES]], !dbg [[DBG788:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i2 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = add nsw i2 %iv, %extraoffset
%val.shifted = ashr i2 %val, %nbits
%val.shifted.iszero = icmp eq i2 %val.shifted, 0
%iv.next = add i2 %iv, 1
call void @escape_inner.i2(i2 %iv, i2 %nbits, i2 %val.shifted, i1 %val.shifted.iszero, i2 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i2 [ %iv, %loop ]
%nbits.res = phi i2 [ %nbits, %loop ]
%val.shifted.res = phi i2 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i2 [ %iv.next, %loop ]
call void @escape_outer.i2(i2 %iv.res, i2 %nbits.res, i2 %val.shifted.res, i1 %val.shifted.iszero.res, i2 %iv.next.res)
ret i2 %iv.res
}
define i3 @t29_addnsw_i3(i3 %val, i3 %start, i3 %extraoffset) mustprogress {
; NOLZCNT-LABEL: @t29_addnsw_i3(
; NOLZCNT-NEXT: entry:
; NOLZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG801:![0-9]+]]
; NOLZCNT: loop:
; NOLZCNT-NEXT: [[IV:%.*]] = phi i3 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG802:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i3 [[IV]], [[META791:![0-9]+]], !DIExpression(), [[DBG802]])
; NOLZCNT-NEXT: [[NBITS:%.*]] = add nsw i3 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG803:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i3 [[NBITS]], [[META792:![0-9]+]], !DIExpression(), [[DBG803]])
; NOLZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i3 [[VAL:%.*]], [[NBITS]], !dbg [[DBG804:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i3 [[VAL_SHIFTED]], [[META793:![0-9]+]], !DIExpression(), [[DBG804]])
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i3 [[VAL_SHIFTED]], 0, !dbg [[DBG805:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META794:![0-9]+]], !DIExpression(), [[DBG805]])
; NOLZCNT-NEXT: [[IV_NEXT]] = add i3 [[IV]], 1, !dbg [[DBG806:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i3 [[IV_NEXT]], [[META795:![0-9]+]], !DIExpression(), [[DBG806]])
; NOLZCNT-NEXT: call void @escape_inner.i3(i3 [[IV]], i3 [[NBITS]], i3 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i3 [[IV_NEXT]]), !dbg [[DBG807:![0-9]+]]
; NOLZCNT-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG808:![0-9]+]]
; NOLZCNT: end:
; NOLZCNT-NEXT: [[IV_RES:%.*]] = phi i3 [ [[IV]], [[LOOP]] ], !dbg [[DBG809:![0-9]+]]
; NOLZCNT-NEXT: [[NBITS_RES:%.*]] = phi i3 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG810:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i3 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG811:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG812:![0-9]+]]
; NOLZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i3 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG813:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i3 [[IV_RES]], [[META796:![0-9]+]], !DIExpression(), [[DBG809]])
; NOLZCNT-NEXT: #dbg_value(i3 [[NBITS_RES]], [[META797:![0-9]+]], !DIExpression(), [[DBG810]])
; NOLZCNT-NEXT: #dbg_value(i3 [[VAL_SHIFTED_RES]], [[META798:![0-9]+]], !DIExpression(), [[DBG811]])
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META799:![0-9]+]], !DIExpression(), [[DBG812]])
; NOLZCNT-NEXT: #dbg_value(i3 [[IV_NEXT_RES]], [[META800:![0-9]+]], !DIExpression(), [[DBG813]])
; NOLZCNT-NEXT: call void @escape_outer.i3(i3 [[IV_RES]], i3 [[NBITS_RES]], i3 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i3 [[IV_NEXT_RES]]), !dbg [[DBG814:![0-9]+]]
; NOLZCNT-NEXT: ret i3 [[IV_RES]], !dbg [[DBG815:![0-9]+]]
;
; LZCNT-LABEL: @t29_addnsw_i3(
; LZCNT-NEXT: entry:
; LZCNT-NEXT: [[VAL_NUMLEADINGZEROS:%.*]] = call i3 @llvm.ctlz.i3(i3 [[VAL:%.*]], i1 false), !dbg [[DBG801:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS:%.*]] = sub nuw nsw i3 3, [[VAL_NUMLEADINGZEROS]], !dbg [[DBG801]]
; LZCNT-NEXT: [[TMP0:%.*]] = sub i3 0, [[EXTRAOFFSET:%.*]], !dbg [[DBG802:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS_OFFSET:%.*]] = add nsw i3 [[VAL_NUMACTIVEBITS]], [[TMP0]], !dbg [[DBG801]]
; LZCNT-NEXT: [[IV_FINAL:%.*]] = call i3 @llvm.smax.i3(i3 [[VAL_NUMACTIVEBITS_OFFSET]], i3 [[START:%.*]]), !dbg [[DBG801]]
; LZCNT-NEXT: [[LOOP_BACKEDGETAKENCOUNT:%.*]] = sub nsw i3 [[IV_FINAL]], [[START]], !dbg [[DBG801]]
; LZCNT-NEXT: [[LOOP_TRIPCOUNT:%.*]] = add nuw nsw i3 [[LOOP_BACKEDGETAKENCOUNT]], 1, !dbg [[DBG801]]
; LZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG802]]
; LZCNT: loop:
; LZCNT-NEXT: [[LOOP_IV:%.*]] = phi i3 [ 0, [[ENTRY:%.*]] ], [ [[LOOP_IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG801]]
; LZCNT-NEXT: [[LOOP_IV_NEXT]] = add nuw nsw i3 [[LOOP_IV]], 1, !dbg [[DBG803:![0-9]+]]
; LZCNT-NEXT: [[LOOP_IVCHECK:%.*]] = icmp eq i3 [[LOOP_IV_NEXT]], [[LOOP_TRIPCOUNT]], !dbg [[DBG803]]
; LZCNT-NEXT: [[IV:%.*]] = add nsw i3 [[LOOP_IV]], [[START]], !dbg [[DBG803]]
; LZCNT-NEXT: #dbg_value(i3 [[IV]], [[META791:![0-9]+]], !DIExpression(), [[DBG801]])
; LZCNT-NEXT: [[NBITS:%.*]] = add nsw i3 [[IV]], [[EXTRAOFFSET]], !dbg [[DBG803]]
; LZCNT-NEXT: #dbg_value(i3 [[NBITS]], [[META792:![0-9]+]], !DIExpression(), [[DBG803]])
; LZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i3 [[VAL]], [[NBITS]], !dbg [[DBG804:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i3 [[VAL_SHIFTED]], [[META793:![0-9]+]], !DIExpression(), [[DBG804]])
; LZCNT-NEXT: #dbg_value(i1 [[LOOP_IVCHECK]], [[META794:![0-9]+]], !DIExpression(), [[META805:![0-9]+]])
; LZCNT-NEXT: [[IV_NEXT:%.*]] = add i3 [[IV]], 1, !dbg [[DBG806:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i3 [[IV_NEXT]], [[META795:![0-9]+]], !DIExpression(), [[DBG806]])
; LZCNT-NEXT: call void @escape_inner.i3(i3 [[IV]], i3 [[NBITS]], i3 [[VAL_SHIFTED]], i1 [[LOOP_IVCHECK]], i3 [[IV_NEXT]]), !dbg [[DBG807:![0-9]+]]
; LZCNT-NEXT: br i1 [[LOOP_IVCHECK]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG808:![0-9]+]]
; LZCNT: end:
; LZCNT-NEXT: [[IV_RES:%.*]] = phi i3 [ [[IV_FINAL]], [[LOOP]] ], !dbg [[DBG809:![0-9]+]]
; LZCNT-NEXT: [[NBITS_RES:%.*]] = phi i3 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG810:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i3 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG811:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[LOOP_IVCHECK]], [[LOOP]] ], !dbg [[DBG812:![0-9]+]]
; LZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i3 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG813:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i3 [[IV_RES]], [[META796:![0-9]+]], !DIExpression(), [[DBG809]])
; LZCNT-NEXT: #dbg_value(i3 [[NBITS_RES]], [[META797:![0-9]+]], !DIExpression(), [[DBG810]])
; LZCNT-NEXT: #dbg_value(i3 [[VAL_SHIFTED_RES]], [[META798:![0-9]+]], !DIExpression(), [[DBG811]])
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META799:![0-9]+]], !DIExpression(), [[DBG812]])
; LZCNT-NEXT: #dbg_value(i3 [[IV_NEXT_RES]], [[META800:![0-9]+]], !DIExpression(), [[DBG813]])
; LZCNT-NEXT: call void @escape_outer.i3(i3 [[IV_RES]], i3 [[NBITS_RES]], i3 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i3 [[IV_NEXT_RES]]), !dbg [[DBG814:![0-9]+]]
; LZCNT-NEXT: ret i3 [[IV_RES]], !dbg [[DBG815:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i3 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = add nsw i3 %iv, %extraoffset
%val.shifted = ashr i3 %val, %nbits
%val.shifted.iszero = icmp eq i3 %val.shifted, 0
%iv.next = add i3 %iv, 1
call void @escape_inner.i3(i3 %iv, i3 %nbits, i3 %val.shifted, i1 %val.shifted.iszero, i3 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i3 [ %iv, %loop ]
%nbits.res = phi i3 [ %nbits, %loop ]
%val.shifted.res = phi i3 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i3 [ %iv.next, %loop ]
call void @escape_outer.i3(i3 %iv.res, i3 %nbits.res, i3 %val.shifted.res, i1 %val.shifted.iszero.res, i3 %iv.next.res)
ret i3 %iv.res
}
define i1 @t30_addnuw_i1(i1 %val, i1 %start, i1 %extraoffset) mustprogress {
; NOLZCNT-LABEL: @t30_addnuw_i1(
; NOLZCNT-NEXT: entry:
; NOLZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG828:![0-9]+]]
; NOLZCNT: loop:
; NOLZCNT-NEXT: [[IV:%.*]] = phi i1 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG829:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[IV]], [[META818:![0-9]+]], !DIExpression(), [[DBG829]])
; NOLZCNT-NEXT: [[NBITS:%.*]] = add nuw i1 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG830:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[NBITS]], [[META819:![0-9]+]], !DIExpression(), [[DBG830]])
; NOLZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i1 [[VAL:%.*]], [[NBITS]], !dbg [[DBG831:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED]], [[META820:![0-9]+]], !DIExpression(), [[DBG831]])
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i1 [[VAL_SHIFTED]], false, !dbg [[DBG832:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META821:![0-9]+]], !DIExpression(), [[DBG832]])
; NOLZCNT-NEXT: [[IV_NEXT]] = add i1 [[IV]], true, !dbg [[DBG833:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[IV_NEXT]], [[META822:![0-9]+]], !DIExpression(), [[DBG833]])
; NOLZCNT-NEXT: call void @escape_inner.i1(i1 [[IV]], i1 [[NBITS]], i1 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i1 [[IV_NEXT]]), !dbg [[DBG834:![0-9]+]]
; NOLZCNT-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG835:![0-9]+]]
; NOLZCNT: end:
; NOLZCNT-NEXT: [[IV_RES:%.*]] = phi i1 [ [[IV]], [[LOOP]] ], !dbg [[DBG836:![0-9]+]]
; NOLZCNT-NEXT: [[NBITS_RES:%.*]] = phi i1 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG837:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i1 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG838:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG839:![0-9]+]]
; NOLZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i1 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG840:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[IV_RES]], [[META823:![0-9]+]], !DIExpression(), [[DBG836]])
; NOLZCNT-NEXT: #dbg_value(i1 [[NBITS_RES]], [[META824:![0-9]+]], !DIExpression(), [[DBG837]])
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_RES]], [[META825:![0-9]+]], !DIExpression(), [[DBG838]])
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META826:![0-9]+]], !DIExpression(), [[DBG839]])
; NOLZCNT-NEXT: #dbg_value(i1 [[IV_NEXT_RES]], [[META827:![0-9]+]], !DIExpression(), [[DBG840]])
; NOLZCNT-NEXT: call void @escape_outer.i1(i1 [[IV_RES]], i1 [[NBITS_RES]], i1 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i1 [[IV_NEXT_RES]]), !dbg [[DBG841:![0-9]+]]
; NOLZCNT-NEXT: ret i1 [[IV_RES]], !dbg [[DBG842:![0-9]+]]
;
; LZCNT-LABEL: @t30_addnuw_i1(
; LZCNT-NEXT: entry:
; LZCNT-NEXT: [[VAL_NUMLEADINGZEROS:%.*]] = call i1 @llvm.ctlz.i1(i1 [[VAL:%.*]], i1 false), !dbg [[DBG828:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS:%.*]] = sub nuw nsw i1 true, [[VAL_NUMLEADINGZEROS]], !dbg [[DBG828]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS_OFFSET:%.*]] = add nsw i1 [[VAL_NUMACTIVEBITS]], [[EXTRAOFFSET:%.*]], !dbg [[DBG828]]
; LZCNT-NEXT: [[IV_FINAL:%.*]] = call i1 @llvm.smax.i1(i1 [[VAL_NUMACTIVEBITS_OFFSET]], i1 [[START:%.*]]), !dbg [[DBG828]]
; LZCNT-NEXT: [[LOOP_BACKEDGETAKENCOUNT:%.*]] = sub nsw i1 [[IV_FINAL]], [[START]], !dbg [[DBG828]]
; LZCNT-NEXT: [[LOOP_TRIPCOUNT:%.*]] = add nuw nsw i1 [[LOOP_BACKEDGETAKENCOUNT]], true, !dbg [[DBG828]]
; LZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG829:![0-9]+]]
; LZCNT: loop:
; LZCNT-NEXT: [[LOOP_IV:%.*]] = phi i1 [ false, [[ENTRY:%.*]] ], [ [[LOOP_IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG828]]
; LZCNT-NEXT: [[LOOP_IV_NEXT]] = add nuw nsw i1 [[LOOP_IV]], true, !dbg [[DBG830:![0-9]+]]
; LZCNT-NEXT: [[LOOP_IVCHECK:%.*]] = icmp eq i1 [[LOOP_IV_NEXT]], [[LOOP_TRIPCOUNT]], !dbg [[DBG830]]
; LZCNT-NEXT: [[IV:%.*]] = add nsw i1 [[LOOP_IV]], [[START]], !dbg [[DBG830]]
; LZCNT-NEXT: #dbg_value(i1 [[IV]], [[META818:![0-9]+]], !DIExpression(), [[DBG828]])
; LZCNT-NEXT: [[NBITS:%.*]] = add nuw i1 [[IV]], [[EXTRAOFFSET]], !dbg [[DBG830]]
; LZCNT-NEXT: #dbg_value(i1 [[NBITS]], [[META819:![0-9]+]], !DIExpression(), [[DBG830]])
; LZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i1 [[VAL]], [[NBITS]], !dbg [[DBG831:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED]], [[META820:![0-9]+]], !DIExpression(), [[DBG831]])
; LZCNT-NEXT: #dbg_value(i1 [[LOOP_IVCHECK]], [[META821:![0-9]+]], !DIExpression(), [[META832:![0-9]+]])
; LZCNT-NEXT: [[IV_NEXT:%.*]] = add i1 [[IV]], true, !dbg [[DBG833:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i1 [[IV_NEXT]], [[META822:![0-9]+]], !DIExpression(), [[DBG833]])
; LZCNT-NEXT: call void @escape_inner.i1(i1 [[IV]], i1 [[NBITS]], i1 [[VAL_SHIFTED]], i1 [[LOOP_IVCHECK]], i1 [[IV_NEXT]]), !dbg [[DBG834:![0-9]+]]
; LZCNT-NEXT: br i1 [[LOOP_IVCHECK]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG835:![0-9]+]]
; LZCNT: end:
; LZCNT-NEXT: [[IV_RES:%.*]] = phi i1 [ [[IV_FINAL]], [[LOOP]] ], !dbg [[DBG836:![0-9]+]]
; LZCNT-NEXT: [[NBITS_RES:%.*]] = phi i1 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG837:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i1 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG838:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[LOOP_IVCHECK]], [[LOOP]] ], !dbg [[DBG839:![0-9]+]]
; LZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i1 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG840:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i1 [[IV_RES]], [[META823:![0-9]+]], !DIExpression(), [[DBG836]])
; LZCNT-NEXT: #dbg_value(i1 [[NBITS_RES]], [[META824:![0-9]+]], !DIExpression(), [[DBG837]])
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_RES]], [[META825:![0-9]+]], !DIExpression(), [[DBG838]])
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META826:![0-9]+]], !DIExpression(), [[DBG839]])
; LZCNT-NEXT: #dbg_value(i1 [[IV_NEXT_RES]], [[META827:![0-9]+]], !DIExpression(), [[DBG840]])
; LZCNT-NEXT: call void @escape_outer.i1(i1 [[IV_RES]], i1 [[NBITS_RES]], i1 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i1 [[IV_NEXT_RES]]), !dbg [[DBG841:![0-9]+]]
; LZCNT-NEXT: ret i1 [[IV_RES]], !dbg [[DBG842:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i1 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = add nuw i1 %iv, %extraoffset
%val.shifted = ashr i1 %val, %nbits
%val.shifted.iszero = icmp eq i1 %val.shifted, 0
%iv.next = add i1 %iv, 1
call void @escape_inner.i1(i1 %iv, i1 %nbits, i1 %val.shifted, i1 %val.shifted.iszero, i1 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i1 [ %iv, %loop ]
%nbits.res = phi i1 [ %nbits, %loop ]
%val.shifted.res = phi i1 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i1 [ %iv.next, %loop ]
call void @escape_outer.i1(i1 %iv.res, i1 %nbits.res, i1 %val.shifted.res, i1 %val.shifted.iszero.res, i1 %iv.next.res)
ret i1 %iv.res
}
define i2 @t31_addnuw_i2(i2 %val, i2 %start, i2 %extraoffset) mustprogress {
; NOLZCNT-LABEL: @t31_addnuw_i2(
; NOLZCNT-NEXT: entry:
; NOLZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG855:![0-9]+]]
; NOLZCNT: loop:
; NOLZCNT-NEXT: [[IV:%.*]] = phi i2 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG856:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i2 [[IV]], [[META845:![0-9]+]], !DIExpression(), [[DBG856]])
; NOLZCNT-NEXT: [[NBITS:%.*]] = add nuw i2 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG857:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i2 [[NBITS]], [[META846:![0-9]+]], !DIExpression(), [[DBG857]])
; NOLZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i2 [[VAL:%.*]], [[NBITS]], !dbg [[DBG858:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i2 [[VAL_SHIFTED]], [[META847:![0-9]+]], !DIExpression(), [[DBG858]])
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i2 [[VAL_SHIFTED]], 0, !dbg [[DBG859:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META848:![0-9]+]], !DIExpression(), [[DBG859]])
; NOLZCNT-NEXT: [[IV_NEXT]] = add i2 [[IV]], 1, !dbg [[DBG860:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i2 [[IV_NEXT]], [[META849:![0-9]+]], !DIExpression(), [[DBG860]])
; NOLZCNT-NEXT: call void @escape_inner.i2(i2 [[IV]], i2 [[NBITS]], i2 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i2 [[IV_NEXT]]), !dbg [[DBG861:![0-9]+]]
; NOLZCNT-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG862:![0-9]+]]
; NOLZCNT: end:
; NOLZCNT-NEXT: [[IV_RES:%.*]] = phi i2 [ [[IV]], [[LOOP]] ], !dbg [[DBG863:![0-9]+]]
; NOLZCNT-NEXT: [[NBITS_RES:%.*]] = phi i2 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG864:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i2 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG865:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG866:![0-9]+]]
; NOLZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i2 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG867:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i2 [[IV_RES]], [[META850:![0-9]+]], !DIExpression(), [[DBG863]])
; NOLZCNT-NEXT: #dbg_value(i2 [[NBITS_RES]], [[META851:![0-9]+]], !DIExpression(), [[DBG864]])
; NOLZCNT-NEXT: #dbg_value(i2 [[VAL_SHIFTED_RES]], [[META852:![0-9]+]], !DIExpression(), [[DBG865]])
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META853:![0-9]+]], !DIExpression(), [[DBG866]])
; NOLZCNT-NEXT: #dbg_value(i2 [[IV_NEXT_RES]], [[META854:![0-9]+]], !DIExpression(), [[DBG867]])
; NOLZCNT-NEXT: call void @escape_outer.i2(i2 [[IV_RES]], i2 [[NBITS_RES]], i2 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i2 [[IV_NEXT_RES]]), !dbg [[DBG868:![0-9]+]]
; NOLZCNT-NEXT: ret i2 [[IV_RES]], !dbg [[DBG869:![0-9]+]]
;
; LZCNT-LABEL: @t31_addnuw_i2(
; LZCNT-NEXT: entry:
; LZCNT-NEXT: [[VAL_NUMLEADINGZEROS:%.*]] = call i2 @llvm.ctlz.i2(i2 [[VAL:%.*]], i1 false), !dbg [[DBG855:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS:%.*]] = sub nuw i2 -2, [[VAL_NUMLEADINGZEROS]], !dbg [[DBG855]]
; LZCNT-NEXT: [[TMP0:%.*]] = sub i2 0, [[EXTRAOFFSET:%.*]], !dbg [[DBG856:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS_OFFSET:%.*]] = add nsw i2 [[VAL_NUMACTIVEBITS]], [[TMP0]], !dbg [[DBG855]]
; LZCNT-NEXT: [[IV_FINAL:%.*]] = call i2 @llvm.smax.i2(i2 [[VAL_NUMACTIVEBITS_OFFSET]], i2 [[START:%.*]]), !dbg [[DBG855]]
; LZCNT-NEXT: [[LOOP_BACKEDGETAKENCOUNT:%.*]] = sub nsw i2 [[IV_FINAL]], [[START]], !dbg [[DBG855]]
; LZCNT-NEXT: [[LOOP_TRIPCOUNT:%.*]] = add nuw i2 [[LOOP_BACKEDGETAKENCOUNT]], 1, !dbg [[DBG855]]
; LZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG856]]
; LZCNT: loop:
; LZCNT-NEXT: [[LOOP_IV:%.*]] = phi i2 [ 0, [[ENTRY:%.*]] ], [ [[LOOP_IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG855]]
; LZCNT-NEXT: [[LOOP_IV_NEXT]] = add nuw i2 [[LOOP_IV]], 1, !dbg [[DBG857:![0-9]+]]
; LZCNT-NEXT: [[LOOP_IVCHECK:%.*]] = icmp eq i2 [[LOOP_IV_NEXT]], [[LOOP_TRIPCOUNT]], !dbg [[DBG857]]
; LZCNT-NEXT: [[IV:%.*]] = add nsw i2 [[LOOP_IV]], [[START]], !dbg [[DBG857]]
; LZCNT-NEXT: #dbg_value(i2 [[IV]], [[META845:![0-9]+]], !DIExpression(), [[DBG855]])
; LZCNT-NEXT: [[NBITS:%.*]] = add nuw i2 [[IV]], [[EXTRAOFFSET]], !dbg [[DBG857]]
; LZCNT-NEXT: #dbg_value(i2 [[NBITS]], [[META846:![0-9]+]], !DIExpression(), [[DBG857]])
; LZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i2 [[VAL]], [[NBITS]], !dbg [[DBG858:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i2 [[VAL_SHIFTED]], [[META847:![0-9]+]], !DIExpression(), [[DBG858]])
; LZCNT-NEXT: #dbg_value(i1 [[LOOP_IVCHECK]], [[META848:![0-9]+]], !DIExpression(), [[META859:![0-9]+]])
; LZCNT-NEXT: [[IV_NEXT:%.*]] = add i2 [[IV]], 1, !dbg [[DBG860:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i2 [[IV_NEXT]], [[META849:![0-9]+]], !DIExpression(), [[DBG860]])
; LZCNT-NEXT: call void @escape_inner.i2(i2 [[IV]], i2 [[NBITS]], i2 [[VAL_SHIFTED]], i1 [[LOOP_IVCHECK]], i2 [[IV_NEXT]]), !dbg [[DBG861:![0-9]+]]
; LZCNT-NEXT: br i1 [[LOOP_IVCHECK]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG862:![0-9]+]]
; LZCNT: end:
; LZCNT-NEXT: [[IV_RES:%.*]] = phi i2 [ [[IV_FINAL]], [[LOOP]] ], !dbg [[DBG863:![0-9]+]]
; LZCNT-NEXT: [[NBITS_RES:%.*]] = phi i2 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG864:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i2 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG865:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[LOOP_IVCHECK]], [[LOOP]] ], !dbg [[DBG866:![0-9]+]]
; LZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i2 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG867:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i2 [[IV_RES]], [[META850:![0-9]+]], !DIExpression(), [[DBG863]])
; LZCNT-NEXT: #dbg_value(i2 [[NBITS_RES]], [[META851:![0-9]+]], !DIExpression(), [[DBG864]])
; LZCNT-NEXT: #dbg_value(i2 [[VAL_SHIFTED_RES]], [[META852:![0-9]+]], !DIExpression(), [[DBG865]])
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META853:![0-9]+]], !DIExpression(), [[DBG866]])
; LZCNT-NEXT: #dbg_value(i2 [[IV_NEXT_RES]], [[META854:![0-9]+]], !DIExpression(), [[DBG867]])
; LZCNT-NEXT: call void @escape_outer.i2(i2 [[IV_RES]], i2 [[NBITS_RES]], i2 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i2 [[IV_NEXT_RES]]), !dbg [[DBG868:![0-9]+]]
; LZCNT-NEXT: ret i2 [[IV_RES]], !dbg [[DBG869:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i2 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = add nuw i2 %iv, %extraoffset
%val.shifted = ashr i2 %val, %nbits
%val.shifted.iszero = icmp eq i2 %val.shifted, 0
%iv.next = add i2 %iv, 1
call void @escape_inner.i2(i2 %iv, i2 %nbits, i2 %val.shifted, i1 %val.shifted.iszero, i2 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i2 [ %iv, %loop ]
%nbits.res = phi i2 [ %nbits, %loop ]
%val.shifted.res = phi i2 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i2 [ %iv.next, %loop ]
call void @escape_outer.i2(i2 %iv.res, i2 %nbits.res, i2 %val.shifted.res, i1 %val.shifted.iszero.res, i2 %iv.next.res)
ret i2 %iv.res
}
define i3 @t32_addnuw_i3(i3 %val, i3 %start, i3 %extraoffset) mustprogress {
; NOLZCNT-LABEL: @t32_addnuw_i3(
; NOLZCNT-NEXT: entry:
; NOLZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG882:![0-9]+]]
; NOLZCNT: loop:
; NOLZCNT-NEXT: [[IV:%.*]] = phi i3 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG883:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i3 [[IV]], [[META872:![0-9]+]], !DIExpression(), [[DBG883]])
; NOLZCNT-NEXT: [[NBITS:%.*]] = add nuw i3 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG884:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i3 [[NBITS]], [[META873:![0-9]+]], !DIExpression(), [[DBG884]])
; NOLZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i3 [[VAL:%.*]], [[NBITS]], !dbg [[DBG885:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i3 [[VAL_SHIFTED]], [[META874:![0-9]+]], !DIExpression(), [[DBG885]])
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i3 [[VAL_SHIFTED]], 0, !dbg [[DBG886:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META875:![0-9]+]], !DIExpression(), [[DBG886]])
; NOLZCNT-NEXT: [[IV_NEXT]] = add i3 [[IV]], 1, !dbg [[DBG887:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i3 [[IV_NEXT]], [[META876:![0-9]+]], !DIExpression(), [[DBG887]])
; NOLZCNT-NEXT: call void @escape_inner.i3(i3 [[IV]], i3 [[NBITS]], i3 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i3 [[IV_NEXT]]), !dbg [[DBG888:![0-9]+]]
; NOLZCNT-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG889:![0-9]+]]
; NOLZCNT: end:
; NOLZCNT-NEXT: [[IV_RES:%.*]] = phi i3 [ [[IV]], [[LOOP]] ], !dbg [[DBG890:![0-9]+]]
; NOLZCNT-NEXT: [[NBITS_RES:%.*]] = phi i3 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG891:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i3 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG892:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG893:![0-9]+]]
; NOLZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i3 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG894:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i3 [[IV_RES]], [[META877:![0-9]+]], !DIExpression(), [[DBG890]])
; NOLZCNT-NEXT: #dbg_value(i3 [[NBITS_RES]], [[META878:![0-9]+]], !DIExpression(), [[DBG891]])
; NOLZCNT-NEXT: #dbg_value(i3 [[VAL_SHIFTED_RES]], [[META879:![0-9]+]], !DIExpression(), [[DBG892]])
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META880:![0-9]+]], !DIExpression(), [[DBG893]])
; NOLZCNT-NEXT: #dbg_value(i3 [[IV_NEXT_RES]], [[META881:![0-9]+]], !DIExpression(), [[DBG894]])
; NOLZCNT-NEXT: call void @escape_outer.i3(i3 [[IV_RES]], i3 [[NBITS_RES]], i3 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i3 [[IV_NEXT_RES]]), !dbg [[DBG895:![0-9]+]]
; NOLZCNT-NEXT: ret i3 [[IV_RES]], !dbg [[DBG896:![0-9]+]]
;
; LZCNT-LABEL: @t32_addnuw_i3(
; LZCNT-NEXT: entry:
; LZCNT-NEXT: [[VAL_NUMLEADINGZEROS:%.*]] = call i3 @llvm.ctlz.i3(i3 [[VAL:%.*]], i1 false), !dbg [[DBG882:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS:%.*]] = sub nuw nsw i3 3, [[VAL_NUMLEADINGZEROS]], !dbg [[DBG882]]
; LZCNT-NEXT: [[TMP0:%.*]] = sub i3 0, [[EXTRAOFFSET:%.*]], !dbg [[DBG883:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS_OFFSET:%.*]] = add nsw i3 [[VAL_NUMACTIVEBITS]], [[TMP0]], !dbg [[DBG882]]
; LZCNT-NEXT: [[IV_FINAL:%.*]] = call i3 @llvm.smax.i3(i3 [[VAL_NUMACTIVEBITS_OFFSET]], i3 [[START:%.*]]), !dbg [[DBG882]]
; LZCNT-NEXT: [[LOOP_BACKEDGETAKENCOUNT:%.*]] = sub nsw i3 [[IV_FINAL]], [[START]], !dbg [[DBG882]]
; LZCNT-NEXT: [[LOOP_TRIPCOUNT:%.*]] = add nuw nsw i3 [[LOOP_BACKEDGETAKENCOUNT]], 1, !dbg [[DBG882]]
; LZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG883]]
; LZCNT: loop:
; LZCNT-NEXT: [[LOOP_IV:%.*]] = phi i3 [ 0, [[ENTRY:%.*]] ], [ [[LOOP_IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG882]]
; LZCNT-NEXT: [[LOOP_IV_NEXT]] = add nuw nsw i3 [[LOOP_IV]], 1, !dbg [[DBG884:![0-9]+]]
; LZCNT-NEXT: [[LOOP_IVCHECK:%.*]] = icmp eq i3 [[LOOP_IV_NEXT]], [[LOOP_TRIPCOUNT]], !dbg [[DBG884]]
; LZCNT-NEXT: [[IV:%.*]] = add nsw i3 [[LOOP_IV]], [[START]], !dbg [[DBG884]]
; LZCNT-NEXT: #dbg_value(i3 [[IV]], [[META872:![0-9]+]], !DIExpression(), [[DBG882]])
; LZCNT-NEXT: [[NBITS:%.*]] = add nuw i3 [[IV]], [[EXTRAOFFSET]], !dbg [[DBG884]]
; LZCNT-NEXT: #dbg_value(i3 [[NBITS]], [[META873:![0-9]+]], !DIExpression(), [[DBG884]])
; LZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i3 [[VAL]], [[NBITS]], !dbg [[DBG885:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i3 [[VAL_SHIFTED]], [[META874:![0-9]+]], !DIExpression(), [[DBG885]])
; LZCNT-NEXT: #dbg_value(i1 [[LOOP_IVCHECK]], [[META875:![0-9]+]], !DIExpression(), [[META886:![0-9]+]])
; LZCNT-NEXT: [[IV_NEXT:%.*]] = add i3 [[IV]], 1, !dbg [[DBG887:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i3 [[IV_NEXT]], [[META876:![0-9]+]], !DIExpression(), [[DBG887]])
; LZCNT-NEXT: call void @escape_inner.i3(i3 [[IV]], i3 [[NBITS]], i3 [[VAL_SHIFTED]], i1 [[LOOP_IVCHECK]], i3 [[IV_NEXT]]), !dbg [[DBG888:![0-9]+]]
; LZCNT-NEXT: br i1 [[LOOP_IVCHECK]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG889:![0-9]+]]
; LZCNT: end:
; LZCNT-NEXT: [[IV_RES:%.*]] = phi i3 [ [[IV_FINAL]], [[LOOP]] ], !dbg [[DBG890:![0-9]+]]
; LZCNT-NEXT: [[NBITS_RES:%.*]] = phi i3 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG891:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i3 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG892:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[LOOP_IVCHECK]], [[LOOP]] ], !dbg [[DBG893:![0-9]+]]
; LZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i3 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG894:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i3 [[IV_RES]], [[META877:![0-9]+]], !DIExpression(), [[DBG890]])
; LZCNT-NEXT: #dbg_value(i3 [[NBITS_RES]], [[META878:![0-9]+]], !DIExpression(), [[DBG891]])
; LZCNT-NEXT: #dbg_value(i3 [[VAL_SHIFTED_RES]], [[META879:![0-9]+]], !DIExpression(), [[DBG892]])
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META880:![0-9]+]], !DIExpression(), [[DBG893]])
; LZCNT-NEXT: #dbg_value(i3 [[IV_NEXT_RES]], [[META881:![0-9]+]], !DIExpression(), [[DBG894]])
; LZCNT-NEXT: call void @escape_outer.i3(i3 [[IV_RES]], i3 [[NBITS_RES]], i3 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i3 [[IV_NEXT_RES]]), !dbg [[DBG895:![0-9]+]]
; LZCNT-NEXT: ret i3 [[IV_RES]], !dbg [[DBG896:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i3 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = add nuw i3 %iv, %extraoffset
%val.shifted = ashr i3 %val, %nbits
%val.shifted.iszero = icmp eq i3 %val.shifted, 0
%iv.next = add i3 %iv, 1
call void @escape_inner.i3(i3 %iv, i3 %nbits, i3 %val.shifted, i1 %val.shifted.iszero, i3 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i3 [ %iv, %loop ]
%nbits.res = phi i3 [ %nbits, %loop ]
%val.shifted.res = phi i3 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i3 [ %iv.next, %loop ]
call void @escape_outer.i3(i3 %iv.res, i3 %nbits.res, i3 %val.shifted.res, i1 %val.shifted.iszero.res, i3 %iv.next.res)
ret i3 %iv.res
}
define i1 @t33_subnsw_i1(i1 %val, i1 %start, i1 %extraoffset) mustprogress {
; NOLZCNT-LABEL: @t33_subnsw_i1(
; NOLZCNT-NEXT: entry:
; NOLZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG909:![0-9]+]]
; NOLZCNT: loop:
; NOLZCNT-NEXT: [[IV:%.*]] = phi i1 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG910:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[IV]], [[META899:![0-9]+]], !DIExpression(), [[DBG910]])
; NOLZCNT-NEXT: [[NBITS:%.*]] = sub nsw i1 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG911:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[NBITS]], [[META900:![0-9]+]], !DIExpression(), [[DBG911]])
; NOLZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i1 [[VAL:%.*]], [[NBITS]], !dbg [[DBG912:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED]], [[META901:![0-9]+]], !DIExpression(), [[DBG912]])
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i1 [[VAL_SHIFTED]], false, !dbg [[DBG913:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META902:![0-9]+]], !DIExpression(), [[DBG913]])
; NOLZCNT-NEXT: [[IV_NEXT]] = add i1 [[IV]], true, !dbg [[DBG914:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[IV_NEXT]], [[META903:![0-9]+]], !DIExpression(), [[DBG914]])
; NOLZCNT-NEXT: call void @escape_inner.i1(i1 [[IV]], i1 [[NBITS]], i1 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i1 [[IV_NEXT]]), !dbg [[DBG915:![0-9]+]]
; NOLZCNT-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG916:![0-9]+]]
; NOLZCNT: end:
; NOLZCNT-NEXT: [[IV_RES:%.*]] = phi i1 [ [[IV]], [[LOOP]] ], !dbg [[DBG917:![0-9]+]]
; NOLZCNT-NEXT: [[NBITS_RES:%.*]] = phi i1 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG918:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i1 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG919:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG920:![0-9]+]]
; NOLZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i1 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG921:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[IV_RES]], [[META904:![0-9]+]], !DIExpression(), [[DBG917]])
; NOLZCNT-NEXT: #dbg_value(i1 [[NBITS_RES]], [[META905:![0-9]+]], !DIExpression(), [[DBG918]])
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_RES]], [[META906:![0-9]+]], !DIExpression(), [[DBG919]])
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META907:![0-9]+]], !DIExpression(), [[DBG920]])
; NOLZCNT-NEXT: #dbg_value(i1 [[IV_NEXT_RES]], [[META908:![0-9]+]], !DIExpression(), [[DBG921]])
; NOLZCNT-NEXT: call void @escape_outer.i1(i1 [[IV_RES]], i1 [[NBITS_RES]], i1 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i1 [[IV_NEXT_RES]]), !dbg [[DBG922:![0-9]+]]
; NOLZCNT-NEXT: ret i1 [[IV_RES]], !dbg [[DBG923:![0-9]+]]
;
; LZCNT-LABEL: @t33_subnsw_i1(
; LZCNT-NEXT: entry:
; LZCNT-NEXT: [[VAL_NUMLEADINGZEROS:%.*]] = call i1 @llvm.ctlz.i1(i1 [[VAL:%.*]], i1 false), !dbg [[DBG909:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS:%.*]] = sub nuw nsw i1 true, [[VAL_NUMLEADINGZEROS]], !dbg [[DBG909]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS_OFFSET:%.*]] = add nsw i1 [[VAL_NUMACTIVEBITS]], [[EXTRAOFFSET:%.*]], !dbg [[DBG909]]
; LZCNT-NEXT: [[IV_FINAL:%.*]] = call i1 @llvm.smax.i1(i1 [[VAL_NUMACTIVEBITS_OFFSET]], i1 [[START:%.*]]), !dbg [[DBG909]]
; LZCNT-NEXT: [[LOOP_BACKEDGETAKENCOUNT:%.*]] = sub nsw i1 [[IV_FINAL]], [[START]], !dbg [[DBG909]]
; LZCNT-NEXT: [[LOOP_TRIPCOUNT:%.*]] = add nuw nsw i1 [[LOOP_BACKEDGETAKENCOUNT]], true, !dbg [[DBG909]]
; LZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG910:![0-9]+]]
; LZCNT: loop:
; LZCNT-NEXT: [[LOOP_IV:%.*]] = phi i1 [ false, [[ENTRY:%.*]] ], [ [[LOOP_IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG909]]
; LZCNT-NEXT: [[LOOP_IV_NEXT]] = add nuw nsw i1 [[LOOP_IV]], true, !dbg [[DBG911:![0-9]+]]
; LZCNT-NEXT: [[LOOP_IVCHECK:%.*]] = icmp eq i1 [[LOOP_IV_NEXT]], [[LOOP_TRIPCOUNT]], !dbg [[DBG911]]
; LZCNT-NEXT: [[IV:%.*]] = add nsw i1 [[LOOP_IV]], [[START]], !dbg [[DBG911]]
; LZCNT-NEXT: #dbg_value(i1 [[IV]], [[META899:![0-9]+]], !DIExpression(), [[DBG909]])
; LZCNT-NEXT: [[NBITS:%.*]] = sub nsw i1 [[IV]], [[EXTRAOFFSET]], !dbg [[DBG911]]
; LZCNT-NEXT: #dbg_value(i1 [[NBITS]], [[META900:![0-9]+]], !DIExpression(), [[DBG911]])
; LZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i1 [[VAL]], [[NBITS]], !dbg [[DBG912:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED]], [[META901:![0-9]+]], !DIExpression(), [[DBG912]])
; LZCNT-NEXT: #dbg_value(i1 [[LOOP_IVCHECK]], [[META902:![0-9]+]], !DIExpression(), [[META913:![0-9]+]])
; LZCNT-NEXT: [[IV_NEXT:%.*]] = add i1 [[IV]], true, !dbg [[DBG914:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i1 [[IV_NEXT]], [[META903:![0-9]+]], !DIExpression(), [[DBG914]])
; LZCNT-NEXT: call void @escape_inner.i1(i1 [[IV]], i1 [[NBITS]], i1 [[VAL_SHIFTED]], i1 [[LOOP_IVCHECK]], i1 [[IV_NEXT]]), !dbg [[DBG915:![0-9]+]]
; LZCNT-NEXT: br i1 [[LOOP_IVCHECK]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG916:![0-9]+]]
; LZCNT: end:
; LZCNT-NEXT: [[IV_RES:%.*]] = phi i1 [ [[IV_FINAL]], [[LOOP]] ], !dbg [[DBG917:![0-9]+]]
; LZCNT-NEXT: [[NBITS_RES:%.*]] = phi i1 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG918:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i1 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG919:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[LOOP_IVCHECK]], [[LOOP]] ], !dbg [[DBG920:![0-9]+]]
; LZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i1 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG921:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i1 [[IV_RES]], [[META904:![0-9]+]], !DIExpression(), [[DBG917]])
; LZCNT-NEXT: #dbg_value(i1 [[NBITS_RES]], [[META905:![0-9]+]], !DIExpression(), [[DBG918]])
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_RES]], [[META906:![0-9]+]], !DIExpression(), [[DBG919]])
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META907:![0-9]+]], !DIExpression(), [[DBG920]])
; LZCNT-NEXT: #dbg_value(i1 [[IV_NEXT_RES]], [[META908:![0-9]+]], !DIExpression(), [[DBG921]])
; LZCNT-NEXT: call void @escape_outer.i1(i1 [[IV_RES]], i1 [[NBITS_RES]], i1 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i1 [[IV_NEXT_RES]]), !dbg [[DBG922:![0-9]+]]
; LZCNT-NEXT: ret i1 [[IV_RES]], !dbg [[DBG923:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i1 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = sub nsw i1 %iv, %extraoffset
%val.shifted = ashr i1 %val, %nbits
%val.shifted.iszero = icmp eq i1 %val.shifted, 0
%iv.next = add i1 %iv, 1
call void @escape_inner.i1(i1 %iv, i1 %nbits, i1 %val.shifted, i1 %val.shifted.iszero, i1 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i1 [ %iv, %loop ]
%nbits.res = phi i1 [ %nbits, %loop ]
%val.shifted.res = phi i1 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i1 [ %iv.next, %loop ]
call void @escape_outer.i1(i1 %iv.res, i1 %nbits.res, i1 %val.shifted.res, i1 %val.shifted.iszero.res, i1 %iv.next.res)
ret i1 %iv.res
}
define i2 @t34_addnuw_i2(i2 %val, i2 %start, i2 %extraoffset) mustprogress {
; NOLZCNT-LABEL: @t34_addnuw_i2(
; NOLZCNT-NEXT: entry:
; NOLZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG936:![0-9]+]]
; NOLZCNT: loop:
; NOLZCNT-NEXT: [[IV:%.*]] = phi i2 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG937:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i2 [[IV]], [[META926:![0-9]+]], !DIExpression(), [[DBG937]])
; NOLZCNT-NEXT: [[NBITS:%.*]] = sub nsw i2 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG938:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i2 [[NBITS]], [[META927:![0-9]+]], !DIExpression(), [[DBG938]])
; NOLZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i2 [[VAL:%.*]], [[NBITS]], !dbg [[DBG939:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i2 [[VAL_SHIFTED]], [[META928:![0-9]+]], !DIExpression(), [[DBG939]])
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i2 [[VAL_SHIFTED]], 0, !dbg [[DBG940:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META929:![0-9]+]], !DIExpression(), [[DBG940]])
; NOLZCNT-NEXT: [[IV_NEXT]] = add i2 [[IV]], 1, !dbg [[DBG941:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i2 [[IV_NEXT]], [[META930:![0-9]+]], !DIExpression(), [[DBG941]])
; NOLZCNT-NEXT: call void @escape_inner.i2(i2 [[IV]], i2 [[NBITS]], i2 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i2 [[IV_NEXT]]), !dbg [[DBG942:![0-9]+]]
; NOLZCNT-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG943:![0-9]+]]
; NOLZCNT: end:
; NOLZCNT-NEXT: [[IV_RES:%.*]] = phi i2 [ [[IV]], [[LOOP]] ], !dbg [[DBG944:![0-9]+]]
; NOLZCNT-NEXT: [[NBITS_RES:%.*]] = phi i2 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG945:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i2 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG946:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG947:![0-9]+]]
; NOLZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i2 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG948:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i2 [[IV_RES]], [[META931:![0-9]+]], !DIExpression(), [[DBG944]])
; NOLZCNT-NEXT: #dbg_value(i2 [[NBITS_RES]], [[META932:![0-9]+]], !DIExpression(), [[DBG945]])
; NOLZCNT-NEXT: #dbg_value(i2 [[VAL_SHIFTED_RES]], [[META933:![0-9]+]], !DIExpression(), [[DBG946]])
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META934:![0-9]+]], !DIExpression(), [[DBG947]])
; NOLZCNT-NEXT: #dbg_value(i2 [[IV_NEXT_RES]], [[META935:![0-9]+]], !DIExpression(), [[DBG948]])
; NOLZCNT-NEXT: call void @escape_outer.i2(i2 [[IV_RES]], i2 [[NBITS_RES]], i2 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i2 [[IV_NEXT_RES]]), !dbg [[DBG949:![0-9]+]]
; NOLZCNT-NEXT: ret i2 [[IV_RES]], !dbg [[DBG950:![0-9]+]]
;
; LZCNT-LABEL: @t34_addnuw_i2(
; LZCNT-NEXT: entry:
; LZCNT-NEXT: [[VAL_NUMLEADINGZEROS:%.*]] = call i2 @llvm.ctlz.i2(i2 [[VAL:%.*]], i1 false), !dbg [[DBG936:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS:%.*]] = sub nuw i2 -2, [[VAL_NUMLEADINGZEROS]], !dbg [[DBG936]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS_OFFSET:%.*]] = add nsw i2 [[VAL_NUMACTIVEBITS]], [[EXTRAOFFSET:%.*]], !dbg [[DBG936]]
; LZCNT-NEXT: [[IV_FINAL:%.*]] = call i2 @llvm.smax.i2(i2 [[VAL_NUMACTIVEBITS_OFFSET]], i2 [[START:%.*]]), !dbg [[DBG936]]
; LZCNT-NEXT: [[LOOP_BACKEDGETAKENCOUNT:%.*]] = sub nsw i2 [[IV_FINAL]], [[START]], !dbg [[DBG936]]
; LZCNT-NEXT: [[LOOP_TRIPCOUNT:%.*]] = add nuw i2 [[LOOP_BACKEDGETAKENCOUNT]], 1, !dbg [[DBG936]]
; LZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG937:![0-9]+]]
; LZCNT: loop:
; LZCNT-NEXT: [[LOOP_IV:%.*]] = phi i2 [ 0, [[ENTRY:%.*]] ], [ [[LOOP_IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG936]]
; LZCNT-NEXT: [[LOOP_IV_NEXT]] = add nuw i2 [[LOOP_IV]], 1, !dbg [[DBG938:![0-9]+]]
; LZCNT-NEXT: [[LOOP_IVCHECK:%.*]] = icmp eq i2 [[LOOP_IV_NEXT]], [[LOOP_TRIPCOUNT]], !dbg [[DBG938]]
; LZCNT-NEXT: [[IV:%.*]] = add nsw i2 [[LOOP_IV]], [[START]], !dbg [[DBG938]]
; LZCNT-NEXT: #dbg_value(i2 [[IV]], [[META926:![0-9]+]], !DIExpression(), [[DBG936]])
; LZCNT-NEXT: [[NBITS:%.*]] = sub nsw i2 [[IV]], [[EXTRAOFFSET]], !dbg [[DBG938]]
; LZCNT-NEXT: #dbg_value(i2 [[NBITS]], [[META927:![0-9]+]], !DIExpression(), [[DBG938]])
; LZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i2 [[VAL]], [[NBITS]], !dbg [[DBG939:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i2 [[VAL_SHIFTED]], [[META928:![0-9]+]], !DIExpression(), [[DBG939]])
; LZCNT-NEXT: #dbg_value(i1 [[LOOP_IVCHECK]], [[META929:![0-9]+]], !DIExpression(), [[META940:![0-9]+]])
; LZCNT-NEXT: [[IV_NEXT:%.*]] = add i2 [[IV]], 1, !dbg [[DBG941:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i2 [[IV_NEXT]], [[META930:![0-9]+]], !DIExpression(), [[DBG941]])
; LZCNT-NEXT: call void @escape_inner.i2(i2 [[IV]], i2 [[NBITS]], i2 [[VAL_SHIFTED]], i1 [[LOOP_IVCHECK]], i2 [[IV_NEXT]]), !dbg [[DBG942:![0-9]+]]
; LZCNT-NEXT: br i1 [[LOOP_IVCHECK]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG943:![0-9]+]]
; LZCNT: end:
; LZCNT-NEXT: [[IV_RES:%.*]] = phi i2 [ [[IV_FINAL]], [[LOOP]] ], !dbg [[DBG944:![0-9]+]]
; LZCNT-NEXT: [[NBITS_RES:%.*]] = phi i2 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG945:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i2 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG946:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[LOOP_IVCHECK]], [[LOOP]] ], !dbg [[DBG947:![0-9]+]]
; LZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i2 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG948:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i2 [[IV_RES]], [[META931:![0-9]+]], !DIExpression(), [[DBG944]])
; LZCNT-NEXT: #dbg_value(i2 [[NBITS_RES]], [[META932:![0-9]+]], !DIExpression(), [[DBG945]])
; LZCNT-NEXT: #dbg_value(i2 [[VAL_SHIFTED_RES]], [[META933:![0-9]+]], !DIExpression(), [[DBG946]])
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META934:![0-9]+]], !DIExpression(), [[DBG947]])
; LZCNT-NEXT: #dbg_value(i2 [[IV_NEXT_RES]], [[META935:![0-9]+]], !DIExpression(), [[DBG948]])
; LZCNT-NEXT: call void @escape_outer.i2(i2 [[IV_RES]], i2 [[NBITS_RES]], i2 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i2 [[IV_NEXT_RES]]), !dbg [[DBG949:![0-9]+]]
; LZCNT-NEXT: ret i2 [[IV_RES]], !dbg [[DBG950:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i2 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = sub nsw i2 %iv, %extraoffset
%val.shifted = ashr i2 %val, %nbits
%val.shifted.iszero = icmp eq i2 %val.shifted, 0
%iv.next = add i2 %iv, 1
call void @escape_inner.i2(i2 %iv, i2 %nbits, i2 %val.shifted, i1 %val.shifted.iszero, i2 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i2 [ %iv, %loop ]
%nbits.res = phi i2 [ %nbits, %loop ]
%val.shifted.res = phi i2 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i2 [ %iv.next, %loop ]
call void @escape_outer.i2(i2 %iv.res, i2 %nbits.res, i2 %val.shifted.res, i1 %val.shifted.iszero.res, i2 %iv.next.res)
ret i2 %iv.res
}
define i3 @t35_addnuw_i3(i3 %val, i3 %start, i3 %extraoffset) mustprogress {
; NOLZCNT-LABEL: @t35_addnuw_i3(
; NOLZCNT-NEXT: entry:
; NOLZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG963:![0-9]+]]
; NOLZCNT: loop:
; NOLZCNT-NEXT: [[IV:%.*]] = phi i3 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG964:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i3 [[IV]], [[META953:![0-9]+]], !DIExpression(), [[DBG964]])
; NOLZCNT-NEXT: [[NBITS:%.*]] = sub nsw i3 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG965:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i3 [[NBITS]], [[META954:![0-9]+]], !DIExpression(), [[DBG965]])
; NOLZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i3 [[VAL:%.*]], [[NBITS]], !dbg [[DBG966:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i3 [[VAL_SHIFTED]], [[META955:![0-9]+]], !DIExpression(), [[DBG966]])
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i3 [[VAL_SHIFTED]], 0, !dbg [[DBG967:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META956:![0-9]+]], !DIExpression(), [[DBG967]])
; NOLZCNT-NEXT: [[IV_NEXT]] = add i3 [[IV]], 1, !dbg [[DBG968:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i3 [[IV_NEXT]], [[META957:![0-9]+]], !DIExpression(), [[DBG968]])
; NOLZCNT-NEXT: call void @escape_inner.i3(i3 [[IV]], i3 [[NBITS]], i3 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i3 [[IV_NEXT]]), !dbg [[DBG969:![0-9]+]]
; NOLZCNT-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG970:![0-9]+]]
; NOLZCNT: end:
; NOLZCNT-NEXT: [[IV_RES:%.*]] = phi i3 [ [[IV]], [[LOOP]] ], !dbg [[DBG971:![0-9]+]]
; NOLZCNT-NEXT: [[NBITS_RES:%.*]] = phi i3 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG972:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i3 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG973:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG974:![0-9]+]]
; NOLZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i3 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG975:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i3 [[IV_RES]], [[META958:![0-9]+]], !DIExpression(), [[DBG971]])
; NOLZCNT-NEXT: #dbg_value(i3 [[NBITS_RES]], [[META959:![0-9]+]], !DIExpression(), [[DBG972]])
; NOLZCNT-NEXT: #dbg_value(i3 [[VAL_SHIFTED_RES]], [[META960:![0-9]+]], !DIExpression(), [[DBG973]])
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META961:![0-9]+]], !DIExpression(), [[DBG974]])
; NOLZCNT-NEXT: #dbg_value(i3 [[IV_NEXT_RES]], [[META962:![0-9]+]], !DIExpression(), [[DBG975]])
; NOLZCNT-NEXT: call void @escape_outer.i3(i3 [[IV_RES]], i3 [[NBITS_RES]], i3 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i3 [[IV_NEXT_RES]]), !dbg [[DBG976:![0-9]+]]
; NOLZCNT-NEXT: ret i3 [[IV_RES]], !dbg [[DBG977:![0-9]+]]
;
; LZCNT-LABEL: @t35_addnuw_i3(
; LZCNT-NEXT: entry:
; LZCNT-NEXT: [[VAL_NUMLEADINGZEROS:%.*]] = call i3 @llvm.ctlz.i3(i3 [[VAL:%.*]], i1 false), !dbg [[DBG963:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS:%.*]] = sub nuw nsw i3 3, [[VAL_NUMLEADINGZEROS]], !dbg [[DBG963]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS_OFFSET:%.*]] = add nsw i3 [[VAL_NUMACTIVEBITS]], [[EXTRAOFFSET:%.*]], !dbg [[DBG963]]
; LZCNT-NEXT: [[IV_FINAL:%.*]] = call i3 @llvm.smax.i3(i3 [[VAL_NUMACTIVEBITS_OFFSET]], i3 [[START:%.*]]), !dbg [[DBG963]]
; LZCNT-NEXT: [[LOOP_BACKEDGETAKENCOUNT:%.*]] = sub nsw i3 [[IV_FINAL]], [[START]], !dbg [[DBG963]]
; LZCNT-NEXT: [[LOOP_TRIPCOUNT:%.*]] = add nuw nsw i3 [[LOOP_BACKEDGETAKENCOUNT]], 1, !dbg [[DBG963]]
; LZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG964:![0-9]+]]
; LZCNT: loop:
; LZCNT-NEXT: [[LOOP_IV:%.*]] = phi i3 [ 0, [[ENTRY:%.*]] ], [ [[LOOP_IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG963]]
; LZCNT-NEXT: [[LOOP_IV_NEXT]] = add nuw nsw i3 [[LOOP_IV]], 1, !dbg [[DBG965:![0-9]+]]
; LZCNT-NEXT: [[LOOP_IVCHECK:%.*]] = icmp eq i3 [[LOOP_IV_NEXT]], [[LOOP_TRIPCOUNT]], !dbg [[DBG965]]
; LZCNT-NEXT: [[IV:%.*]] = add nsw i3 [[LOOP_IV]], [[START]], !dbg [[DBG965]]
; LZCNT-NEXT: #dbg_value(i3 [[IV]], [[META953:![0-9]+]], !DIExpression(), [[DBG963]])
; LZCNT-NEXT: [[NBITS:%.*]] = sub nsw i3 [[IV]], [[EXTRAOFFSET]], !dbg [[DBG965]]
; LZCNT-NEXT: #dbg_value(i3 [[NBITS]], [[META954:![0-9]+]], !DIExpression(), [[DBG965]])
; LZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i3 [[VAL]], [[NBITS]], !dbg [[DBG966:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i3 [[VAL_SHIFTED]], [[META955:![0-9]+]], !DIExpression(), [[DBG966]])
; LZCNT-NEXT: #dbg_value(i1 [[LOOP_IVCHECK]], [[META956:![0-9]+]], !DIExpression(), [[META967:![0-9]+]])
; LZCNT-NEXT: [[IV_NEXT:%.*]] = add i3 [[IV]], 1, !dbg [[DBG968:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i3 [[IV_NEXT]], [[META957:![0-9]+]], !DIExpression(), [[DBG968]])
; LZCNT-NEXT: call void @escape_inner.i3(i3 [[IV]], i3 [[NBITS]], i3 [[VAL_SHIFTED]], i1 [[LOOP_IVCHECK]], i3 [[IV_NEXT]]), !dbg [[DBG969:![0-9]+]]
; LZCNT-NEXT: br i1 [[LOOP_IVCHECK]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG970:![0-9]+]]
; LZCNT: end:
; LZCNT-NEXT: [[IV_RES:%.*]] = phi i3 [ [[IV_FINAL]], [[LOOP]] ], !dbg [[DBG971:![0-9]+]]
; LZCNT-NEXT: [[NBITS_RES:%.*]] = phi i3 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG972:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i3 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG973:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[LOOP_IVCHECK]], [[LOOP]] ], !dbg [[DBG974:![0-9]+]]
; LZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i3 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG975:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i3 [[IV_RES]], [[META958:![0-9]+]], !DIExpression(), [[DBG971]])
; LZCNT-NEXT: #dbg_value(i3 [[NBITS_RES]], [[META959:![0-9]+]], !DIExpression(), [[DBG972]])
; LZCNT-NEXT: #dbg_value(i3 [[VAL_SHIFTED_RES]], [[META960:![0-9]+]], !DIExpression(), [[DBG973]])
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META961:![0-9]+]], !DIExpression(), [[DBG974]])
; LZCNT-NEXT: #dbg_value(i3 [[IV_NEXT_RES]], [[META962:![0-9]+]], !DIExpression(), [[DBG975]])
; LZCNT-NEXT: call void @escape_outer.i3(i3 [[IV_RES]], i3 [[NBITS_RES]], i3 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i3 [[IV_NEXT_RES]]), !dbg [[DBG976:![0-9]+]]
; LZCNT-NEXT: ret i3 [[IV_RES]], !dbg [[DBG977:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i3 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = sub nsw i3 %iv, %extraoffset
%val.shifted = ashr i3 %val, %nbits
%val.shifted.iszero = icmp eq i3 %val.shifted, 0
%iv.next = add i3 %iv, 1
call void @escape_inner.i3(i3 %iv, i3 %nbits, i3 %val.shifted, i1 %val.shifted.iszero, i3 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i3 [ %iv, %loop ]
%nbits.res = phi i3 [ %nbits, %loop ]
%val.shifted.res = phi i3 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i3 [ %iv.next, %loop ]
call void @escape_outer.i3(i3 %iv.res, i3 %nbits.res, i3 %val.shifted.res, i1 %val.shifted.iszero.res, i3 %iv.next.res)
ret i3 %iv.res
}
; For ashr, we must have knowledge that the original loop is finite.
define i8 @n36(i8 %val, i8 %start, i8 %extraoffset) {
; CHECK-LABEL: @n36(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]], !dbg [[DBG990:![0-9]+]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i8 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG991:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV]], [[META980:![0-9]+]], !DIExpression(), [[DBG991]])
; CHECK-NEXT: [[NBITS:%.*]] = add nsw i8 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG992:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[NBITS]], [[META981:![0-9]+]], !DIExpression(), [[DBG992]])
; CHECK-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL:%.*]], [[NBITS]], !dbg [[DBG993:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META982:![0-9]+]], !DIExpression(), [[DBG993]])
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i8 [[VAL_SHIFTED]], 0, !dbg [[DBG994:![0-9]+]]
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META983:![0-9]+]], !DIExpression(), [[DBG994]])
; CHECK-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1, !dbg [[DBG995:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META984:![0-9]+]], !DIExpression(), [[DBG995]])
; CHECK-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i8 [[IV_NEXT]]), !dbg [[DBG996:![0-9]+]]
; CHECK-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG997:![0-9]+]]
; CHECK: end:
; CHECK-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV]], [[LOOP]] ], !dbg [[DBG998:![0-9]+]]
; CHECK-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG999:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG1000:![0-9]+]]
; CHECK-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG1001:![0-9]+]]
; CHECK-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG1002:![0-9]+]]
; CHECK-NEXT: #dbg_value(i8 [[IV_RES]], [[META985:![0-9]+]], !DIExpression(), [[DBG998]])
; CHECK-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META986:![0-9]+]], !DIExpression(), [[DBG999]])
; CHECK-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META987:![0-9]+]], !DIExpression(), [[DBG1000]])
; CHECK-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META988:![0-9]+]], !DIExpression(), [[DBG1001]])
; CHECK-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META989:![0-9]+]], !DIExpression(), [[DBG1002]])
; CHECK-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG1003:![0-9]+]]
; CHECK-NEXT: ret i8 [[IV_RES]], !dbg [[DBG1004:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i8 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = add nsw i8 %iv, %extraoffset
%val.shifted = ashr i8 %val, %nbits
%val.shifted.iszero = icmp eq i8 %val.shifted, 0
%iv.next = add i8 %iv, 1
call void @escape_inner(i8 %iv, i8 %nbits, i8 %val.shifted, i1 %val.shifted.iszero, i8 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i8 [ %iv, %loop ]
%nbits.res = phi i8 [ %nbits, %loop ]
%val.shifted.res = phi i8 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i8 [ %iv.next, %loop ]
call void @escape_outer(i8 %iv.res, i8 %nbits.res, i8 %val.shifted.res, i1 %val.shifted.iszero.res, i8 %iv.next.res)
ret i8 %iv.res
}
define i8 @p37(i8 %val, i8 %start, i8 %extraoffset) {
; NOLZCNT-LABEL: @p37(
; NOLZCNT-NEXT: entry:
; NOLZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG1017:![0-9]+]]
; NOLZCNT: loop:
; NOLZCNT-NEXT: [[IV:%.*]] = phi i8 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG1018:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[IV]], [[META1007:![0-9]+]], !DIExpression(), [[DBG1018]])
; NOLZCNT-NEXT: [[NBITS:%.*]] = add nsw i8 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG1019:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[NBITS]], [[META1008:![0-9]+]], !DIExpression(), [[DBG1019]])
; NOLZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL:%.*]], [[NBITS]], !dbg [[DBG1020:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META1009:![0-9]+]], !DIExpression(), [[DBG1020]])
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i8 [[VAL_SHIFTED]], 0, !dbg [[DBG1021:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META1010:![0-9]+]], !DIExpression(), [[DBG1021]])
; NOLZCNT-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1, !dbg [[DBG1022:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META1011:![0-9]+]], !DIExpression(), [[DBG1022]])
; NOLZCNT-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i8 [[IV_NEXT]]), !dbg [[DBG1023:![0-9]+]]
; NOLZCNT-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG1024:![0-9]+]], !llvm.loop [[LOOP1025:![0-9]+]]
; NOLZCNT: end:
; NOLZCNT-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV]], [[LOOP]] ], !dbg [[DBG1027:![0-9]+]]
; NOLZCNT-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG1028:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG1029:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG1030:![0-9]+]]
; NOLZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG1031:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[IV_RES]], [[META1012:![0-9]+]], !DIExpression(), [[DBG1027]])
; NOLZCNT-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META1013:![0-9]+]], !DIExpression(), [[DBG1028]])
; NOLZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META1014:![0-9]+]], !DIExpression(), [[DBG1029]])
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META1015:![0-9]+]], !DIExpression(), [[DBG1030]])
; NOLZCNT-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META1016:![0-9]+]], !DIExpression(), [[DBG1031]])
; NOLZCNT-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG1032:![0-9]+]]
; NOLZCNT-NEXT: ret i8 [[IV_RES]], !dbg [[DBG1033:![0-9]+]]
;
; LZCNT-LABEL: @p37(
; LZCNT-NEXT: entry:
; LZCNT-NEXT: [[VAL_NUMLEADINGZEROS:%.*]] = call i8 @llvm.ctlz.i8(i8 [[VAL:%.*]], i1 false), !dbg [[DBG1017:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS:%.*]] = sub nuw nsw i8 8, [[VAL_NUMLEADINGZEROS]], !dbg [[DBG1017]]
; LZCNT-NEXT: [[TMP0:%.*]] = sub i8 0, [[EXTRAOFFSET:%.*]], !dbg [[DBG1018:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS_OFFSET:%.*]] = add nsw i8 [[VAL_NUMACTIVEBITS]], [[TMP0]], !dbg [[DBG1017]]
; LZCNT-NEXT: [[IV_FINAL:%.*]] = call i8 @llvm.smax.i8(i8 [[VAL_NUMACTIVEBITS_OFFSET]], i8 [[START:%.*]]), !dbg [[DBG1017]]
; LZCNT-NEXT: [[LOOP_BACKEDGETAKENCOUNT:%.*]] = sub nsw i8 [[IV_FINAL]], [[START]], !dbg [[DBG1017]]
; LZCNT-NEXT: [[LOOP_TRIPCOUNT:%.*]] = add nuw nsw i8 [[LOOP_BACKEDGETAKENCOUNT]], 1, !dbg [[DBG1017]]
; LZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG1018]]
; LZCNT: loop:
; LZCNT-NEXT: [[LOOP_IV:%.*]] = phi i8 [ 0, [[ENTRY:%.*]] ], [ [[LOOP_IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG1017]]
; LZCNT-NEXT: [[LOOP_IV_NEXT]] = add nuw nsw i8 [[LOOP_IV]], 1, !dbg [[DBG1019:![0-9]+]]
; LZCNT-NEXT: [[LOOP_IVCHECK:%.*]] = icmp eq i8 [[LOOP_IV_NEXT]], [[LOOP_TRIPCOUNT]], !dbg [[DBG1019]]
; LZCNT-NEXT: [[IV:%.*]] = add nsw i8 [[LOOP_IV]], [[START]], !dbg [[DBG1019]]
; LZCNT-NEXT: #dbg_value(i8 [[IV]], [[META1007:![0-9]+]], !DIExpression(), [[DBG1017]])
; LZCNT-NEXT: [[NBITS:%.*]] = add nsw i8 [[IV]], [[EXTRAOFFSET]], !dbg [[DBG1019]]
; LZCNT-NEXT: #dbg_value(i8 [[NBITS]], [[META1008:![0-9]+]], !DIExpression(), [[DBG1019]])
; LZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL]], [[NBITS]], !dbg [[DBG1020:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META1009:![0-9]+]], !DIExpression(), [[DBG1020]])
; LZCNT-NEXT: #dbg_value(i1 [[LOOP_IVCHECK]], [[META1010:![0-9]+]], !DIExpression(), [[META1021:![0-9]+]])
; LZCNT-NEXT: [[IV_NEXT:%.*]] = add i8 [[IV]], 1, !dbg [[DBG1022:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META1011:![0-9]+]], !DIExpression(), [[DBG1022]])
; LZCNT-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[LOOP_IVCHECK]], i8 [[IV_NEXT]]), !dbg [[DBG1023:![0-9]+]]
; LZCNT-NEXT: br i1 [[LOOP_IVCHECK]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG1024:![0-9]+]]
; LZCNT: end:
; LZCNT-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV_FINAL]], [[LOOP]] ], !dbg [[DBG1025:![0-9]+]]
; LZCNT-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG1026:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG1027:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[LOOP_IVCHECK]], [[LOOP]] ], !dbg [[DBG1028:![0-9]+]]
; LZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG1029:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[IV_RES]], [[META1012:![0-9]+]], !DIExpression(), [[DBG1025]])
; LZCNT-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META1013:![0-9]+]], !DIExpression(), [[DBG1026]])
; LZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META1014:![0-9]+]], !DIExpression(), [[DBG1027]])
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META1015:![0-9]+]], !DIExpression(), [[DBG1028]])
; LZCNT-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META1016:![0-9]+]], !DIExpression(), [[DBG1029]])
; LZCNT-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG1030:![0-9]+]]
; LZCNT-NEXT: ret i8 [[IV_RES]], !dbg [[DBG1031:![0-9]+]]
;
entry:
br label %loop
loop:
%iv = phi i8 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = add nsw i8 %iv, %extraoffset
%val.shifted = ashr i8 %val, %nbits
%val.shifted.iszero = icmp eq i8 %val.shifted, 0
%iv.next = add i8 %iv, 1
call void @escape_inner(i8 %iv, i8 %nbits, i8 %val.shifted, i1 %val.shifted.iszero, i8 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop, !llvm.loop !0
end:
%iv.res = phi i8 [ %iv, %loop ]
%nbits.res = phi i8 [ %nbits, %loop ]
%val.shifted.res = phi i8 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i8 [ %iv.next, %loop ]
call void @escape_outer(i8 %iv.res, i8 %nbits.res, i8 %val.shifted.res, i1 %val.shifted.iszero.res, i8 %iv.next.res)
ret i8 %iv.res
}
!0 = distinct !{!0, !1}
!1 = !{!"llvm.loop.mustprogress"}
define i8 @p38(i8 %val.crude, i8 %start, i8 %extraoffset) {
; NOLZCNT-LABEL: @p38(
; NOLZCNT-NEXT: entry:
; NOLZCNT-NEXT: [[VAL:%.*]] = and i8 [[VAL_CRUDE:%.*]], 127, !dbg [[DBG1047:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[VAL]], [[META1036:![0-9]+]], !DIExpression(), [[DBG1047]])
; NOLZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG1048:![0-9]+]]
; NOLZCNT: loop:
; NOLZCNT-NEXT: [[IV:%.*]] = phi i8 [ [[START:%.*]], [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG1049:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[IV]], [[META1037:![0-9]+]], !DIExpression(), [[DBG1049]])
; NOLZCNT-NEXT: [[NBITS:%.*]] = add nsw i8 [[IV]], [[EXTRAOFFSET:%.*]], !dbg [[DBG1050:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[NBITS]], [[META1038:![0-9]+]], !DIExpression(), [[DBG1050]])
; NOLZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL]], [[NBITS]], !dbg [[DBG1051:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META1039:![0-9]+]], !DIExpression(), [[DBG1051]])
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO:%.*]] = icmp eq i8 [[VAL_SHIFTED]], 0, !dbg [[DBG1052:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO]], [[META1040:![0-9]+]], !DIExpression(), [[DBG1052]])
; NOLZCNT-NEXT: [[IV_NEXT]] = add i8 [[IV]], 1, !dbg [[DBG1053:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META1041:![0-9]+]], !DIExpression(), [[DBG1053]])
; NOLZCNT-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[VAL_SHIFTED_ISZERO]], i8 [[IV_NEXT]]), !dbg [[DBG1054:![0-9]+]]
; NOLZCNT-NEXT: br i1 [[VAL_SHIFTED_ISZERO]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG1055:![0-9]+]]
; NOLZCNT: end:
; NOLZCNT-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV]], [[LOOP]] ], !dbg [[DBG1056:![0-9]+]]
; NOLZCNT-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG1057:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG1058:![0-9]+]]
; NOLZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[VAL_SHIFTED_ISZERO]], [[LOOP]] ], !dbg [[DBG1059:![0-9]+]]
; NOLZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG1060:![0-9]+]]
; NOLZCNT-NEXT: #dbg_value(i8 [[IV_RES]], [[META1042:![0-9]+]], !DIExpression(), [[DBG1056]])
; NOLZCNT-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META1043:![0-9]+]], !DIExpression(), [[DBG1057]])
; NOLZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META1044:![0-9]+]], !DIExpression(), [[DBG1058]])
; NOLZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META1045:![0-9]+]], !DIExpression(), [[DBG1059]])
; NOLZCNT-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META1046:![0-9]+]], !DIExpression(), [[DBG1060]])
; NOLZCNT-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG1061:![0-9]+]]
; NOLZCNT-NEXT: ret i8 [[IV_RES]], !dbg [[DBG1062:![0-9]+]]
;
; LZCNT-LABEL: @p38(
; LZCNT-NEXT: entry:
; LZCNT-NEXT: [[VAL:%.*]] = and i8 [[VAL_CRUDE:%.*]], 127, !dbg [[DBG1045:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[VAL]], [[META1034:![0-9]+]], !DIExpression(), [[DBG1045]])
; LZCNT-NEXT: [[VAL_NUMLEADINGZEROS:%.*]] = call i8 @llvm.ctlz.i8(i8 [[VAL]], i1 false), !dbg [[DBG1046:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS:%.*]] = sub nuw nsw i8 8, [[VAL_NUMLEADINGZEROS]], !dbg [[DBG1046]]
; LZCNT-NEXT: [[TMP0:%.*]] = sub i8 0, [[EXTRAOFFSET:%.*]], !dbg [[DBG1047:![0-9]+]]
; LZCNT-NEXT: [[VAL_NUMACTIVEBITS_OFFSET:%.*]] = add nsw i8 [[VAL_NUMACTIVEBITS]], [[TMP0]], !dbg [[DBG1046]]
; LZCNT-NEXT: [[IV_FINAL:%.*]] = call i8 @llvm.smax.i8(i8 [[VAL_NUMACTIVEBITS_OFFSET]], i8 [[START:%.*]]), !dbg [[DBG1046]]
; LZCNT-NEXT: [[LOOP_BACKEDGETAKENCOUNT:%.*]] = sub nsw i8 [[IV_FINAL]], [[START]], !dbg [[DBG1046]]
; LZCNT-NEXT: [[LOOP_TRIPCOUNT:%.*]] = add nuw nsw i8 [[LOOP_BACKEDGETAKENCOUNT]], 1, !dbg [[DBG1046]]
; LZCNT-NEXT: br label [[LOOP:%.*]], !dbg [[DBG1047]]
; LZCNT: loop:
; LZCNT-NEXT: [[LOOP_IV:%.*]] = phi i8 [ 0, [[ENTRY:%.*]] ], [ [[LOOP_IV_NEXT:%.*]], [[LOOP]] ], !dbg [[DBG1046]]
; LZCNT-NEXT: [[LOOP_IV_NEXT]] = add nuw nsw i8 [[LOOP_IV]], 1, !dbg [[DBG1048:![0-9]+]]
; LZCNT-NEXT: [[LOOP_IVCHECK:%.*]] = icmp eq i8 [[LOOP_IV_NEXT]], [[LOOP_TRIPCOUNT]], !dbg [[DBG1048]]
; LZCNT-NEXT: [[IV:%.*]] = add nsw i8 [[LOOP_IV]], [[START]], !dbg [[DBG1048]]
; LZCNT-NEXT: #dbg_value(i8 [[IV]], [[META1035:![0-9]+]], !DIExpression(), [[DBG1046]])
; LZCNT-NEXT: [[NBITS:%.*]] = add nsw i8 [[IV]], [[EXTRAOFFSET]], !dbg [[DBG1048]]
; LZCNT-NEXT: #dbg_value(i8 [[NBITS]], [[META1036:![0-9]+]], !DIExpression(), [[DBG1048]])
; LZCNT-NEXT: [[VAL_SHIFTED:%.*]] = ashr i8 [[VAL]], [[NBITS]], !dbg [[DBG1049:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED]], [[META1037:![0-9]+]], !DIExpression(), [[DBG1049]])
; LZCNT-NEXT: #dbg_value(i1 [[LOOP_IVCHECK]], [[META1038:![0-9]+]], !DIExpression(), [[META1050:![0-9]+]])
; LZCNT-NEXT: [[IV_NEXT:%.*]] = add i8 [[IV]], 1, !dbg [[DBG1051:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[IV_NEXT]], [[META1039:![0-9]+]], !DIExpression(), [[DBG1051]])
; LZCNT-NEXT: call void @escape_inner(i8 [[IV]], i8 [[NBITS]], i8 [[VAL_SHIFTED]], i1 [[LOOP_IVCHECK]], i8 [[IV_NEXT]]), !dbg [[DBG1052:![0-9]+]]
; LZCNT-NEXT: br i1 [[LOOP_IVCHECK]], label [[END:%.*]], label [[LOOP]], !dbg [[DBG1053:![0-9]+]]
; LZCNT: end:
; LZCNT-NEXT: [[IV_RES:%.*]] = phi i8 [ [[IV_FINAL]], [[LOOP]] ], !dbg [[DBG1054:![0-9]+]]
; LZCNT-NEXT: [[NBITS_RES:%.*]] = phi i8 [ [[NBITS]], [[LOOP]] ], !dbg [[DBG1055:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_RES:%.*]] = phi i8 [ [[VAL_SHIFTED]], [[LOOP]] ], !dbg [[DBG1056:![0-9]+]]
; LZCNT-NEXT: [[VAL_SHIFTED_ISZERO_RES:%.*]] = phi i1 [ [[LOOP_IVCHECK]], [[LOOP]] ], !dbg [[DBG1057:![0-9]+]]
; LZCNT-NEXT: [[IV_NEXT_RES:%.*]] = phi i8 [ [[IV_NEXT]], [[LOOP]] ], !dbg [[DBG1058:![0-9]+]]
; LZCNT-NEXT: #dbg_value(i8 [[IV_RES]], [[META1040:![0-9]+]], !DIExpression(), [[DBG1054]])
; LZCNT-NEXT: #dbg_value(i8 [[NBITS_RES]], [[META1041:![0-9]+]], !DIExpression(), [[DBG1055]])
; LZCNT-NEXT: #dbg_value(i8 [[VAL_SHIFTED_RES]], [[META1042:![0-9]+]], !DIExpression(), [[DBG1056]])
; LZCNT-NEXT: #dbg_value(i1 [[VAL_SHIFTED_ISZERO_RES]], [[META1043:![0-9]+]], !DIExpression(), [[DBG1057]])
; LZCNT-NEXT: #dbg_value(i8 [[IV_NEXT_RES]], [[META1044:![0-9]+]], !DIExpression(), [[DBG1058]])
; LZCNT-NEXT: call void @escape_outer(i8 [[IV_RES]], i8 [[NBITS_RES]], i8 [[VAL_SHIFTED_RES]], i1 [[VAL_SHIFTED_ISZERO_RES]], i8 [[IV_NEXT_RES]]), !dbg [[DBG1059:![0-9]+]]
; LZCNT-NEXT: ret i8 [[IV_RES]], !dbg [[DBG1060:![0-9]+]]
;
entry:
%val = and i8 %val.crude, 127
br label %loop
loop:
%iv = phi i8 [ %start, %entry ], [ %iv.next, %loop ]
%nbits = add nsw i8 %iv, %extraoffset
%val.shifted = ashr i8 %val, %nbits
%val.shifted.iszero = icmp eq i8 %val.shifted, 0
%iv.next = add i8 %iv, 1
call void @escape_inner(i8 %iv, i8 %nbits, i8 %val.shifted, i1 %val.shifted.iszero, i8 %iv.next)
br i1 %val.shifted.iszero, label %end, label %loop
end:
%iv.res = phi i8 [ %iv, %loop ]
%nbits.res = phi i8 [ %nbits, %loop ]
%val.shifted.res = phi i8 [ %val.shifted, %loop ]
%val.shifted.iszero.res = phi i1 [ %val.shifted.iszero, %loop ]
%iv.next.res = phi i8 [ %iv.next, %loop ]
call void @escape_outer(i8 %iv.res, i8 %nbits.res, i8 %val.shifted.res, i1 %val.shifted.iszero.res, i8 %iv.next.res)
ret i8 %iv.res
}
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