; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=correlated-propagation -S | FileCheck %s
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
target triple = "thumbv7m-arm-none-eabi"
define void @h(ptr nocapture %p, i32 %x) local_unnamed_addr #0 {
; CHECK-LABEL: @h(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 [[X:%.*]], 0
; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_END:%.*]]
; CHECK: if.then:
; CHECK-NEXT: [[REM21:%.*]] = urem i32 [[X]], 10
; CHECK-NEXT: store i32 [[REM21]], ptr [[P:%.*]], align 4
; CHECK-NEXT: br label [[IF_END]]
; CHECK: if.end:
; CHECK-NEXT: ret void
;
entry:
%cmp = icmp sgt i32 %x, 0
br i1 %cmp, label %if.then, label %if.end
if.then:
%rem2 = srem i32 %x, 10
store i32 %rem2, ptr %p, align 4
br label %if.end
if.end:
ret void
}
; looping case where loop has exactly one block
; at the point of srem, we know that %a is always greater than 0,
; because of the assume before it, so we can transform it to urem.
declare void @llvm.assume(i1)
define void @test4(i32 %n) {
; CHECK-LABEL: @test4(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 [[N:%.*]], 0
; CHECK-NEXT: br i1 [[CMP]], label [[LOOP:%.*]], label [[EXIT:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[A:%.*]] = phi i32 [ [[N]], [[ENTRY:%.*]] ], [ [[REM1:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[COND:%.*]] = icmp ugt i32 [[A]], 4
; CHECK-NEXT: call void @llvm.assume(i1 [[COND]])
; CHECK-NEXT: [[REM1]] = urem i32 [[A]], 17
; CHECK-NEXT: [[LOOPCOND:%.*]] = icmp ugt i32 [[REM1]], 8
; CHECK-NEXT: br i1 [[LOOPCOND]], label [[LOOP]], label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
%cmp = icmp sgt i32 %n, 0
br i1 %cmp, label %loop, label %exit
loop:
%a = phi i32 [ %n, %entry ], [ %rem, %loop ]
%cond = icmp sgt i32 %a, 4
call void @llvm.assume(i1 %cond)
%rem = srem i32 %a, 17
%loopcond = icmp sgt i32 %rem, 8
br i1 %loopcond, label %loop, label %exit
exit:
ret void
}
; Now, let's try various domain combinations for operands.
define i8 @test5_pos_pos(i8 %x, i8 %y) {
; CHECK-LABEL: @test5_pos_pos(
; CHECK-NEXT: [[C0:%.*]] = icmp sge i8 [[X:%.*]], 0
; CHECK-NEXT: call void @llvm.assume(i1 [[C0]])
; CHECK-NEXT: [[C1:%.*]] = icmp sge i8 [[Y:%.*]], 0
; CHECK-NEXT: call void @llvm.assume(i1 [[C1]])
; CHECK-NEXT: [[REM1:%.*]] = urem i8 [[X]], [[Y]]
; CHECK-NEXT: ret i8 [[REM1]]
;
%c0 = icmp sge i8 %x, 0
call void @llvm.assume(i1 %c0)
%c1 = icmp sge i8 %y, 0
call void @llvm.assume(i1 %c1)
%rem = srem i8 %x, %y
ret i8 %rem
}
define i8 @test6_pos_neg(i8 %x, i8 %y) {
; CHECK-LABEL: @test6_pos_neg(
; CHECK-NEXT: [[C0:%.*]] = icmp sge i8 [[X:%.*]], 0
; CHECK-NEXT: call void @llvm.assume(i1 [[C0]])
; CHECK-NEXT: [[C1:%.*]] = icmp sle i8 [[Y:%.*]], 0
; CHECK-NEXT: call void @llvm.assume(i1 [[C1]])
; CHECK-NEXT: [[Y_NONNEG:%.*]] = sub i8 0, [[Y]]
; CHECK-NEXT: [[REM1:%.*]] = urem i8 [[X]], [[Y_NONNEG]]
; CHECK-NEXT: ret i8 [[REM1]]
;
%c0 = icmp sge i8 %x, 0
call void @llvm.assume(i1 %c0)
%c1 = icmp sle i8 %y, 0
call void @llvm.assume(i1 %c1)
%rem = srem i8 %x, %y
ret i8 %rem
}
define i8 @test7_neg_pos(i8 %x, i8 %y) {
; CHECK-LABEL: @test7_neg_pos(
; CHECK-NEXT: [[C0:%.*]] = icmp sle i8 [[X:%.*]], 0
; CHECK-NEXT: call void @llvm.assume(i1 [[C0]])
; CHECK-NEXT: [[C1:%.*]] = icmp sge i8 [[Y:%.*]], 0
; CHECK-NEXT: call void @llvm.assume(i1 [[C1]])
; CHECK-NEXT: [[X_NONNEG:%.*]] = sub i8 0, [[X]]
; CHECK-NEXT: [[REM1:%.*]] = urem i8 [[X_NONNEG]], [[Y]]
; CHECK-NEXT: [[REM1_NEG:%.*]] = sub i8 0, [[REM1]]
; CHECK-NEXT: ret i8 [[REM1_NEG]]
;
%c0 = icmp sle i8 %x, 0
call void @llvm.assume(i1 %c0)
%c1 = icmp sge i8 %y, 0
call void @llvm.assume(i1 %c1)
%rem = srem i8 %x, %y
ret i8 %rem
}
define i8 @test8_neg_neg(i8 %x, i8 %y) {
; CHECK-LABEL: @test8_neg_neg(
; CHECK-NEXT: [[C0:%.*]] = icmp sle i8 [[X:%.*]], 0
; CHECK-NEXT: call void @llvm.assume(i1 [[C0]])
; CHECK-NEXT: [[C1:%.*]] = icmp sle i8 [[Y:%.*]], 0
; CHECK-NEXT: call void @llvm.assume(i1 [[C1]])
; CHECK-NEXT: [[X_NONNEG:%.*]] = sub i8 0, [[X]]
; CHECK-NEXT: [[Y_NONNEG:%.*]] = sub i8 0, [[Y]]
; CHECK-NEXT: [[REM1:%.*]] = urem i8 [[X_NONNEG]], [[Y_NONNEG]]
; CHECK-NEXT: [[REM1_NEG:%.*]] = sub i8 0, [[REM1]]
; CHECK-NEXT: ret i8 [[REM1_NEG]]
;
%c0 = icmp sle i8 %x, 0
call void @llvm.assume(i1 %c0)
%c1 = icmp sle i8 %y, 0
call void @llvm.assume(i1 %c1)
%rem = srem i8 %x, %y
ret i8 %rem
}
; After making remainder unsigned, can we narrow it?
define i16 @test9_narrow(i16 %x, i16 %y) {
; CHECK-LABEL: @test9_narrow(
; CHECK-NEXT: [[C0:%.*]] = icmp ult i16 [[X:%.*]], 128
; CHECK-NEXT: call void @llvm.assume(i1 [[C0]])
; CHECK-NEXT: [[C1:%.*]] = icmp ult i16 [[Y:%.*]], 128
; CHECK-NEXT: call void @llvm.assume(i1 [[C1]])
; CHECK-NEXT: [[REM1_LHS_TRUNC:%.*]] = trunc i16 [[X]] to i8
; CHECK-NEXT: [[REM1_RHS_TRUNC:%.*]] = trunc i16 [[Y]] to i8
; CHECK-NEXT: [[REM12:%.*]] = urem i8 [[REM1_LHS_TRUNC]], [[REM1_RHS_TRUNC]]
; CHECK-NEXT: [[REM1_ZEXT:%.*]] = zext i8 [[REM12]] to i16
; CHECK-NEXT: ret i16 [[REM1_ZEXT]]
;
%c0 = icmp ult i16 %x, 128
call void @llvm.assume(i1 %c0)
%c1 = icmp ult i16 %y, 128
call void @llvm.assume(i1 %c1)
%rem = srem i16 %x, %y
ret i16 %rem
}
; Ok, but what about narrowing srem in general?
; If both operands are i15, it's uncontroversial - we can truncate to i16
define i64 @test11_i15_i15(i64 %x, i64 %y) {
; CHECK-LABEL: @test11_i15_i15(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[C0:%.*]] = icmp sle i64 [[X:%.*]], 16383
; CHECK-NEXT: call void @llvm.assume(i1 [[C0]])
; CHECK-NEXT: [[C1:%.*]] = icmp sge i64 [[X]], -16384
; CHECK-NEXT: call void @llvm.assume(i1 [[C1]])
; CHECK-NEXT: [[C2:%.*]] = icmp sle i64 [[Y:%.*]], 16383
; CHECK-NEXT: call void @llvm.assume(i1 [[C2]])
; CHECK-NEXT: [[C3:%.*]] = icmp sge i64 [[Y]], -16384
; CHECK-NEXT: call void @llvm.assume(i1 [[C3]])
; CHECK-NEXT: [[DIV_LHS_TRUNC:%.*]] = trunc i64 [[X]] to i16
; CHECK-NEXT: [[DIV_RHS_TRUNC:%.*]] = trunc i64 [[Y]] to i16
; CHECK-NEXT: [[DIV1:%.*]] = srem i16 [[DIV_LHS_TRUNC]], [[DIV_RHS_TRUNC]]
; CHECK-NEXT: [[DIV_SEXT:%.*]] = sext i16 [[DIV1]] to i64
; CHECK-NEXT: ret i64 [[DIV_SEXT]]
;
entry:
%c0 = icmp sle i64 %x, 16383
call void @llvm.assume(i1 %c0)
%c1 = icmp sge i64 %x, -16384
call void @llvm.assume(i1 %c1)
%c2 = icmp sle i64 %y, 16383
call void @llvm.assume(i1 %c2)
%c3 = icmp sge i64 %y, -16384
call void @llvm.assume(i1 %c3)
%div = srem i64 %x, %y
ret i64 %div
}
; But if operands are i16, we can only truncate to i32, because we can't
; rule out UB of i16 INT_MIN s/ i16 -1
define i64 @test12_i16_i16(i64 %x, i64 %y) {
; CHECK-LABEL: @test12_i16_i16(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[C0:%.*]] = icmp sle i64 [[X:%.*]], 32767
; CHECK-NEXT: call void @llvm.assume(i1 [[C0]])
; CHECK-NEXT: [[C1:%.*]] = icmp sge i64 [[X]], -32768
; CHECK-NEXT: call void @llvm.assume(i1 [[C1]])
; CHECK-NEXT: [[C2:%.*]] = icmp sle i64 [[Y:%.*]], 32767
; CHECK-NEXT: call void @llvm.assume(i1 [[C2]])
; CHECK-NEXT: [[C3:%.*]] = icmp sge i64 [[Y]], -32768
; CHECK-NEXT: call void @llvm.assume(i1 [[C3]])
; CHECK-NEXT: [[DIV_LHS_TRUNC:%.*]] = trunc i64 [[X]] to i32
; CHECK-NEXT: [[DIV_RHS_TRUNC:%.*]] = trunc i64 [[Y]] to i32
; CHECK-NEXT: [[DIV1:%.*]] = srem i32 [[DIV_LHS_TRUNC]], [[DIV_RHS_TRUNC]]
; CHECK-NEXT: [[DIV_SEXT:%.*]] = sext i32 [[DIV1]] to i64
; CHECK-NEXT: ret i64 [[DIV_SEXT]]
;
entry:
%c0 = icmp sle i64 %x, 32767
call void @llvm.assume(i1 %c0)
%c1 = icmp sge i64 %x, -32768
call void @llvm.assume(i1 %c1)
%c2 = icmp sle i64 %y, 32767
call void @llvm.assume(i1 %c2)
%c3 = icmp sge i64 %y, -32768
call void @llvm.assume(i1 %c3)
%div = srem i64 %x, %y
ret i64 %div
}
; But if divident is i16, and divisor is u15, then we know that i16 is UB-safe.
define i64 @test13_i16_u15(i64 %x, i64 %y) {
; CHECK-LABEL: @test13_i16_u15(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[C0:%.*]] = icmp sle i64 [[X:%.*]], 32767
; CHECK-NEXT: call void @llvm.assume(i1 [[C0]])
; CHECK-NEXT: [[C1:%.*]] = icmp sge i64 [[X]], -32768
; CHECK-NEXT: call void @llvm.assume(i1 [[C1]])
; CHECK-NEXT: [[C2:%.*]] = icmp ule i64 [[Y:%.*]], 32767
; CHECK-NEXT: call void @llvm.assume(i1 [[C2]])
; CHECK-NEXT: [[DIV_LHS_TRUNC:%.*]] = trunc i64 [[X]] to i16
; CHECK-NEXT: [[DIV_RHS_TRUNC:%.*]] = trunc i64 [[Y]] to i16
; CHECK-NEXT: [[DIV1:%.*]] = srem i16 [[DIV_LHS_TRUNC]], [[DIV_RHS_TRUNC]]
; CHECK-NEXT: [[DIV_SEXT:%.*]] = sext i16 [[DIV1]] to i64
; CHECK-NEXT: ret i64 [[DIV_SEXT]]
;
entry:
%c0 = icmp sle i64 %x, 32767
call void @llvm.assume(i1 %c0)
%c1 = icmp sge i64 %x, -32768
call void @llvm.assume(i1 %c1)
%c2 = icmp ule i64 %y, 32767
call void @llvm.assume(i1 %c2)
%div = srem i64 %x, %y
ret i64 %div
}
; And likewise, if we know that if the divident is never i16 INT_MIN,
; we can truncate to i16.
define i64 @test14_i16safe_i16(i64 %x, i64 %y) {
; CHECK-LABEL: @test14_i16safe_i16(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[C0:%.*]] = icmp sle i64 [[X:%.*]], 32767
; CHECK-NEXT: call void @llvm.assume(i1 [[C0]])
; CHECK-NEXT: [[C1:%.*]] = icmp sgt i64 [[X]], -32768
; CHECK-NEXT: call void @llvm.assume(i1 [[C1]])
; CHECK-NEXT: [[C2:%.*]] = icmp sle i64 [[Y:%.*]], 32767
; CHECK-NEXT: call void @llvm.assume(i1 [[C2]])
; CHECK-NEXT: [[C3:%.*]] = icmp sge i64 [[Y]], -32768
; CHECK-NEXT: call void @llvm.assume(i1 [[C3]])
; CHECK-NEXT: [[DIV_LHS_TRUNC:%.*]] = trunc i64 [[X]] to i16
; CHECK-NEXT: [[DIV_RHS_TRUNC:%.*]] = trunc i64 [[Y]] to i16
; CHECK-NEXT: [[DIV1:%.*]] = srem i16 [[DIV_LHS_TRUNC]], [[DIV_RHS_TRUNC]]
; CHECK-NEXT: [[DIV_SEXT:%.*]] = sext i16 [[DIV1]] to i64
; CHECK-NEXT: ret i64 [[DIV_SEXT]]
;
entry:
%c0 = icmp sle i64 %x, 32767
call void @llvm.assume(i1 %c0)
%c1 = icmp sgt i64 %x, -32768
call void @llvm.assume(i1 %c1)
%c2 = icmp sle i64 %y, 32767
call void @llvm.assume(i1 %c2)
%c3 = icmp sge i64 %y, -32768
call void @llvm.assume(i1 %c3)
%div = srem i64 %x, %y
ret i64 %div
}
; Of course, both of the conditions can happen at once.
define i64 @test15_i16safe_u15(i64 %x, i64 %y) {
; CHECK-LABEL: @test15_i16safe_u15(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[C0:%.*]] = icmp sle i64 [[X:%.*]], 32767
; CHECK-NEXT: call void @llvm.assume(i1 [[C0]])
; CHECK-NEXT: [[C1:%.*]] = icmp sgt i64 [[X]], -32768
; CHECK-NEXT: call void @llvm.assume(i1 [[C1]])
; CHECK-NEXT: [[C2:%.*]] = icmp ule i64 [[Y:%.*]], 32767
; CHECK-NEXT: call void @llvm.assume(i1 [[C2]])
; CHECK-NEXT: [[DIV_LHS_TRUNC:%.*]] = trunc i64 [[X]] to i16
; CHECK-NEXT: [[DIV_RHS_TRUNC:%.*]] = trunc i64 [[Y]] to i16
; CHECK-NEXT: [[DIV1:%.*]] = srem i16 [[DIV_LHS_TRUNC]], [[DIV_RHS_TRUNC]]
; CHECK-NEXT: [[DIV_SEXT:%.*]] = sext i16 [[DIV1]] to i64
; CHECK-NEXT: ret i64 [[DIV_SEXT]]
;
entry:
%c0 = icmp sle i64 %x, 32767
call void @llvm.assume(i1 %c0)
%c1 = icmp sgt i64 %x, -32768
call void @llvm.assume(i1 %c1)
%c2 = icmp ule i64 %y, 32767
call void @llvm.assume(i1 %c2)
%div = srem i64 %x, %y
ret i64 %div
}
; We at most truncate to i8
define i64 @test16_i4_i4(i64 %x, i64 %y) {
; CHECK-LABEL: @test16_i4_i4(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[C0:%.*]] = icmp sle i64 [[X:%.*]], 3
; CHECK-NEXT: call void @llvm.assume(i1 [[C0]])
; CHECK-NEXT: [[C1:%.*]] = icmp sge i64 [[X]], -4
; CHECK-NEXT: call void @llvm.assume(i1 [[C1]])
; CHECK-NEXT: [[C2:%.*]] = icmp sle i64 [[Y:%.*]], 3
; CHECK-NEXT: call void @llvm.assume(i1 [[C2]])
; CHECK-NEXT: [[C3:%.*]] = icmp sge i64 [[Y]], -4
; CHECK-NEXT: call void @llvm.assume(i1 [[C3]])
; CHECK-NEXT: [[DIV_LHS_TRUNC:%.*]] = trunc i64 [[X]] to i8
; CHECK-NEXT: [[DIV_RHS_TRUNC:%.*]] = trunc i64 [[Y]] to i8
; CHECK-NEXT: [[DIV1:%.*]] = srem i8 [[DIV_LHS_TRUNC]], [[DIV_RHS_TRUNC]]
; CHECK-NEXT: [[DIV_SEXT:%.*]] = sext i8 [[DIV1]] to i64
; CHECK-NEXT: ret i64 [[DIV_SEXT]]
;
entry:
%c0 = icmp sle i64 %x, 3
call void @llvm.assume(i1 %c0)
%c1 = icmp sge i64 %x, -4
call void @llvm.assume(i1 %c1)
%c2 = icmp sle i64 %y, 3
call void @llvm.assume(i1 %c2)
%c3 = icmp sge i64 %y, -4
call void @llvm.assume(i1 %c3)
%div = srem i64 %x, %y
ret i64 %div
}
; And we round up to the powers of two
define i64 @test17_i9_i9(i64 %x, i64 %y) {
; CHECK-LABEL: @test17_i9_i9(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[C0:%.*]] = icmp sle i64 [[X:%.*]], 255
; CHECK-NEXT: call void @llvm.assume(i1 [[C0]])
; CHECK-NEXT: [[C1:%.*]] = icmp sge i64 [[X]], -256
; CHECK-NEXT: call void @llvm.assume(i1 [[C1]])
; CHECK-NEXT: [[C2:%.*]] = icmp sle i64 [[Y:%.*]], 255
; CHECK-NEXT: call void @llvm.assume(i1 [[C2]])
; CHECK-NEXT: [[C3:%.*]] = icmp sge i64 [[Y]], -256
; CHECK-NEXT: call void @llvm.assume(i1 [[C3]])
; CHECK-NEXT: [[DIV_LHS_TRUNC:%.*]] = trunc i64 [[X]] to i16
; CHECK-NEXT: [[DIV_RHS_TRUNC:%.*]] = trunc i64 [[Y]] to i16
; CHECK-NEXT: [[DIV1:%.*]] = srem i16 [[DIV_LHS_TRUNC]], [[DIV_RHS_TRUNC]]
; CHECK-NEXT: [[DIV_SEXT:%.*]] = sext i16 [[DIV1]] to i64
; CHECK-NEXT: ret i64 [[DIV_SEXT]]
;
entry:
%c0 = icmp sle i64 %x, 255
call void @llvm.assume(i1 %c0)
%c1 = icmp sge i64 %x, -256
call void @llvm.assume(i1 %c1)
%c2 = icmp sle i64 %y, 255
call void @llvm.assume(i1 %c2)
%c3 = icmp sge i64 %y, -256
call void @llvm.assume(i1 %c3)
%div = srem i64 %x, %y
ret i64 %div
}
; Don't widen the operation to the next power of two if it wasn't a power of two.
define i9 @test18_i9_i9(i9 %x, i9 %y) {
; CHECK-LABEL: @test18_i9_i9(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[C0:%.*]] = icmp sle i9 [[X:%.*]], 255
; CHECK-NEXT: call void @llvm.assume(i1 [[C0]])
; CHECK-NEXT: [[C1:%.*]] = icmp sge i9 [[X]], -256
; CHECK-NEXT: call void @llvm.assume(i1 [[C1]])
; CHECK-NEXT: [[C2:%.*]] = icmp sle i9 [[Y:%.*]], 255
; CHECK-NEXT: call void @llvm.assume(i1 [[C2]])
; CHECK-NEXT: [[C3:%.*]] = icmp sge i9 [[Y]], -256
; CHECK-NEXT: call void @llvm.assume(i1 [[C3]])
; CHECK-NEXT: [[DIV:%.*]] = srem i9 [[X]], [[Y]]
; CHECK-NEXT: ret i9 [[DIV]]
;
entry:
%c0 = icmp sle i9 %x, 255
call void @llvm.assume(i1 %c0)
%c1 = icmp sge i9 %x, -256
call void @llvm.assume(i1 %c1)
%c2 = icmp sle i9 %y, 255
call void @llvm.assume(i1 %c2)
%c3 = icmp sge i9 %y, -256
call void @llvm.assume(i1 %c3)
%div = srem i9 %x, %y
ret i9 %div
}
define i10 @test19_i10_i10(i10 %x, i10 %y) {
; CHECK-LABEL: @test19_i10_i10(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[C0:%.*]] = icmp sle i10 [[X:%.*]], 255
; CHECK-NEXT: call void @llvm.assume(i1 [[C0]])
; CHECK-NEXT: [[C1:%.*]] = icmp sge i10 [[X]], -256
; CHECK-NEXT: call void @llvm.assume(i1 [[C1]])
; CHECK-NEXT: [[C2:%.*]] = icmp sle i10 [[Y:%.*]], 255
; CHECK-NEXT: call void @llvm.assume(i1 [[C2]])
; CHECK-NEXT: [[C3:%.*]] = icmp sge i10 [[Y]], -256
; CHECK-NEXT: call void @llvm.assume(i1 [[C3]])
; CHECK-NEXT: [[DIV:%.*]] = srem i10 [[X]], [[Y]]
; CHECK-NEXT: ret i10 [[DIV]]
;
entry:
%c0 = icmp sle i10 %x, 255
call void @llvm.assume(i1 %c0)
%c1 = icmp sge i10 %x, -256
call void @llvm.assume(i1 %c1)
%c2 = icmp sle i10 %y, 255
call void @llvm.assume(i1 %c2)
%c3 = icmp sge i10 %y, -256
call void @llvm.assume(i1 %c3)
%div = srem i10 %x, %y
ret i10 %div
}
; Note that we need to take the maximal bitwidth, in which both of the operands are representable!
define i64 @test20_i16_i18(i64 %x, i64 %y) {
; CHECK-LABEL: @test20_i16_i18(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[C0:%.*]] = icmp sle i64 [[X:%.*]], 16383
; CHECK-NEXT: call void @llvm.assume(i1 [[C0]])
; CHECK-NEXT: [[C1:%.*]] = icmp sge i64 [[X]], -16384
; CHECK-NEXT: call void @llvm.assume(i1 [[C1]])
; CHECK-NEXT: [[C2:%.*]] = icmp sle i64 [[Y:%.*]], 65535
; CHECK-NEXT: call void @llvm.assume(i1 [[C2]])
; CHECK-NEXT: [[C3:%.*]] = icmp sge i64 [[Y]], -65536
; CHECK-NEXT: call void @llvm.assume(i1 [[C3]])
; CHECK-NEXT: [[DIV_LHS_TRUNC:%.*]] = trunc i64 [[X]] to i32
; CHECK-NEXT: [[DIV_RHS_TRUNC:%.*]] = trunc i64 [[Y]] to i32
; CHECK-NEXT: [[DIV1:%.*]] = srem i32 [[DIV_LHS_TRUNC]], [[DIV_RHS_TRUNC]]
; CHECK-NEXT: [[DIV_SEXT:%.*]] = sext i32 [[DIV1]] to i64
; CHECK-NEXT: ret i64 [[DIV_SEXT]]
;
entry:
%c0 = icmp sle i64 %x, 16383
call void @llvm.assume(i1 %c0)
%c1 = icmp sge i64 %x, -16384
call void @llvm.assume(i1 %c1)
%c2 = icmp sle i64 %y, 65535
call void @llvm.assume(i1 %c2)
%c3 = icmp sge i64 %y, -65536
call void @llvm.assume(i1 %c3)
%div = srem i64 %x, %y
ret i64 %div
}
define i64 @test21_i18_i16(i64 %x, i64 %y) {
; CHECK-LABEL: @test21_i18_i16(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[C0:%.*]] = icmp sle i64 [[X:%.*]], 65535
; CHECK-NEXT: call void @llvm.assume(i1 [[C0]])
; CHECK-NEXT: [[C1:%.*]] = icmp sge i64 [[X]], -65536
; CHECK-NEXT: call void @llvm.assume(i1 [[C1]])
; CHECK-NEXT: [[C2:%.*]] = icmp sle i64 [[Y:%.*]], 16383
; CHECK-NEXT: call void @llvm.assume(i1 [[C2]])
; CHECK-NEXT: [[C3:%.*]] = icmp sge i64 [[Y]], -16384
; CHECK-NEXT: call void @llvm.assume(i1 [[C3]])
; CHECK-NEXT: [[DIV_LHS_TRUNC:%.*]] = trunc i64 [[X]] to i32
; CHECK-NEXT: [[DIV_RHS_TRUNC:%.*]] = trunc i64 [[Y]] to i32
; CHECK-NEXT: [[DIV1:%.*]] = srem i32 [[DIV_LHS_TRUNC]], [[DIV_RHS_TRUNC]]
; CHECK-NEXT: [[DIV_SEXT:%.*]] = sext i32 [[DIV1]] to i64
; CHECK-NEXT: ret i64 [[DIV_SEXT]]
;
entry:
%c0 = icmp sle i64 %x, 65535
call void @llvm.assume(i1 %c0)
%c1 = icmp sge i64 %x, -65536
call void @llvm.assume(i1 %c1)
%c2 = icmp sle i64 %y, 16383
call void @llvm.assume(i1 %c2)
%c3 = icmp sge i64 %y, -16384
call void @llvm.assume(i1 %c3)
%div = srem i64 %x, %y
ret i64 %div
}
define dso_local i8 @abs_x_lt_abs_y_positive(i8 %x, i8 %y) {
; CHECK-LABEL: @abs_x_lt_abs_y_positive(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[X_CMP:%.*]] = icmp slt i8 [[X:%.*]], 10
; CHECK-NEXT: [[X_CMP2:%.*]] = icmp sgt i8 [[X]], -10
; CHECK-NEXT: [[AND_X:%.*]] = and i1 [[X_CMP]], [[X_CMP2]]
; CHECK-NEXT: [[Y_CMP:%.*]] = icmp sge i8 [[Y:%.*]], 10
; CHECK-NEXT: [[AND_COND:%.*]] = and i1 [[AND_X]], [[Y_CMP]]
; CHECK-NEXT: br i1 [[AND_COND]], label [[IF_ELSE:%.*]], label [[IF_THEN:%.*]]
; CHECK: if.else:
; CHECK-NEXT: ret i8 [[X]]
; CHECK: if.then:
; CHECK-NEXT: ret i8 0
;
entry:
%x.cmp = icmp slt i8 %x, 10
%x.cmp2 = icmp sgt i8 %x, -10
%and.x = and i1 %x.cmp, %x.cmp2
%y.cmp = icmp sge i8 %y, 10
%and.cond = and i1 %and.x, %y.cmp
br i1 %and.cond, label %if.else, label %if.then
if.else: ; preds = %entry
%rem = srem i8 %x, %y
ret i8 %rem
if.then: ; preds = %entry, %if.then6, %if.end4
ret i8 0
}
define dso_local i8 @abs_x_lt_abs_y_positive_unsigned_cmp(i8 %x, i8 %y) {
; CHECK-LABEL: @abs_x_lt_abs_y_positive_unsigned_cmp(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[X_CMP:%.*]] = icmp slt i8 [[X:%.*]], 10
; CHECK-NEXT: [[X_CMP2:%.*]] = icmp sgt i8 [[X]], -10
; CHECK-NEXT: [[AND_X:%.*]] = and i1 [[X_CMP]], [[X_CMP2]]
; CHECK-NEXT: [[Y_CMP:%.*]] = icmp uge i8 [[Y:%.*]], 10
; CHECK-NEXT: [[Y_CMP2:%.*]] = icmp ule i8 [[Y]], 20
; CHECK-NEXT: [[AND_Y:%.*]] = and i1 [[Y_CMP]], [[Y_CMP2]]
; CHECK-NEXT: [[AND_COND:%.*]] = and i1 [[AND_X]], [[AND_Y]]
; CHECK-NEXT: br i1 [[AND_COND]], label [[IF_ELSE:%.*]], label [[IF_THEN:%.*]]
; CHECK: if.else:
; CHECK-NEXT: ret i8 [[X]]
; CHECK: if.then:
; CHECK-NEXT: ret i8 0
;
entry:
%x.cmp = icmp slt i8 %x, 10
%x.cmp2 = icmp sgt i8 %x, -10
%and.x = and i1 %x.cmp, %x.cmp2
%y.cmp = icmp uge i8 %y, 10
%y.cmp2 = icmp ule i8 %y, 20
%and.y = and i1 %y.cmp, %y.cmp2
%and.cond = and i1 %and.x, %and.y
br i1 %and.cond, label %if.else, label %if.then
if.else: ; preds = %entry
%rem = srem i8 %x, %y
ret i8 %rem
if.then: ; preds = %entry, %if.then6, %if.end4
ret i8 0
}
define dso_local i8 @abs_x_lt_abs_y_negative(i8 %x, i8 %y) {
; CHECK-LABEL: @abs_x_lt_abs_y_negative(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[X_CMP:%.*]] = icmp slt i8 [[X:%.*]], 10
; CHECK-NEXT: [[X_CMP2:%.*]] = icmp sgt i8 [[X]], -10
; CHECK-NEXT: [[AND_X:%.*]] = and i1 [[X_CMP]], [[X_CMP2]]
; CHECK-NEXT: [[Y_CMP:%.*]] = icmp sge i8 [[Y:%.*]], -20
; CHECK-NEXT: [[Y_CMP2:%.*]] = icmp sle i8 [[Y]], -11
; CHECK-NEXT: [[AND_Y:%.*]] = and i1 [[Y_CMP]], [[Y_CMP2]]
; CHECK-NEXT: [[AND_COND:%.*]] = and i1 [[AND_X]], [[AND_Y]]
; CHECK-NEXT: br i1 [[AND_COND]], label [[IF_ELSE:%.*]], label [[IF_THEN:%.*]]
; CHECK: if.else:
; CHECK-NEXT: ret i8 [[X]]
; CHECK: if.then:
; CHECK-NEXT: ret i8 0
;
entry:
%x.cmp = icmp slt i8 %x, 10
%x.cmp2 = icmp sgt i8 %x, -10
%and.x = and i1 %x.cmp, %x.cmp2
%y.cmp = icmp sge i8 %y, -20
%y.cmp2 = icmp sle i8 %y, -11
%and.y = and i1 %y.cmp, %y.cmp2
%and.cond = and i1 %and.x, %and.y
br i1 %and.cond, label %if.else, label %if.then
if.else: ; preds = %entry
%rem = srem i8 %x, %y
ret i8 %rem
if.then: ; preds = %entry, %if.then6, %if.end4
ret i8 0
}
; Negative test: abs(x) less than or equal abs(y)
define dso_local i8 @abs_x_lte_abs_y(i8 %x, i8 %y) {
; CHECK-LABEL: @abs_x_lte_abs_y(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[X_CMP:%.*]] = icmp slt i8 [[X:%.*]], 10
; CHECK-NEXT: [[X_CMP2:%.*]] = icmp sgt i8 [[X]], -10
; CHECK-NEXT: [[AND_X:%.*]] = and i1 [[X_CMP]], [[X_CMP2]]
; CHECK-NEXT: [[Y_CMP:%.*]] = icmp sge i8 [[Y:%.*]], -20
; CHECK-NEXT: [[Y_CMP2:%.*]] = icmp sle i8 [[Y]], -9
; CHECK-NEXT: [[AND_Y:%.*]] = and i1 [[Y_CMP]], [[Y_CMP2]]
; CHECK-NEXT: [[AND_COND:%.*]] = and i1 [[AND_X]], [[AND_Y]]
; CHECK-NEXT: br i1 [[AND_COND]], label [[IF_ELSE:%.*]], label [[IF_THEN:%.*]]
; CHECK: if.else:
; CHECK-NEXT: [[REM:%.*]] = srem i8 [[X]], [[Y]]
; CHECK-NEXT: ret i8 [[REM]]
; CHECK: if.then:
; CHECK-NEXT: ret i8 0
;
entry:
%x.cmp = icmp slt i8 %x, 10
%x.cmp2 = icmp sgt i8 %x, -10
%and.x = and i1 %x.cmp, %x.cmp2
%y.cmp = icmp sge i8 %y, -20
%y.cmp2 = icmp sle i8 %y, -9
%and.y = and i1 %y.cmp, %y.cmp2
%and.cond = and i1 %and.x, %and.y
br i1 %and.cond, label %if.else, label %if.then
if.else: ; preds = %entry
%rem = srem i8 %x, %y
ret i8 %rem
if.then: ; preds = %entry, %if.then6, %if.end4
ret i8 0
}
; Negative test: abs(x) has unknown predication with abs(y)
define dso_local i8 @abs_x_unknown_abs_y(i8 %x, i8 %y) {
; CHECK-LABEL: @abs_x_unknown_abs_y(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[X_CMP:%.*]] = icmp slt i8 [[X:%.*]], 10
; CHECK-NEXT: [[X_CMP2:%.*]] = icmp sgt i8 [[X]], -10
; CHECK-NEXT: [[AND_X:%.*]] = and i1 [[X_CMP]], [[X_CMP2]]
; CHECK-NEXT: [[Y_CMP:%.*]] = icmp sge i8 [[Y:%.*]], -20
; CHECK-NEXT: [[Y_CMP2:%.*]] = icmp sle i8 [[Y]], -9
; CHECK-NEXT: [[AND_Y:%.*]] = and i1 [[Y_CMP]], [[Y_CMP2]]
; CHECK-NEXT: [[AND_COND:%.*]] = and i1 [[AND_X]], [[AND_Y]]
; CHECK-NEXT: br i1 [[AND_COND]], label [[IF_ELSE:%.*]], label [[IF_THEN:%.*]]
; CHECK: if.else:
; CHECK-NEXT: [[REM:%.*]] = srem i8 [[X]], [[Y]]
; CHECK-NEXT: ret i8 [[REM]]
; CHECK: if.then:
; CHECK-NEXT: ret i8 0
;
entry:
%x.cmp = icmp slt i8 %x, 10
%x.cmp2 = icmp sgt i8 %x, -10
%and.x = and i1 %x.cmp, %x.cmp2
%y.cmp = icmp sge i8 %y, -20
%y.cmp2 = icmp sle i8 %y, -9
%and.y = and i1 %y.cmp, %y.cmp2
%and.cond = and i1 %and.x, %and.y
br i1 %and.cond, label %if.else, label %if.then
if.else: ; preds = %entry
%rem = srem i8 %x, %y
ret i8 %rem
if.then: ; preds = %entry, %if.then6, %if.end4
ret i8 0
}
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