; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
; RUN: opt -p loop-vectorize -mattr="+v" -S %s | FileCheck %s
target datalayout = "e-m:e-p:64:64-i64:64-i128:128-n32:64-S128"
target triple = "riscv64-unknown-linux-gnu"
; Test case for https://github.com/llvm/llvm-project/issues/87378.
define void @pr87378_vpinstruction_or_drop_poison_generating_flags(ptr %arg, i64 %a, i64 %b, i64 %c) {
; CHECK-LABEL: define void @pr87378_vpinstruction_or_drop_poison_generating_flags(
; CHECK-SAME: ptr [[ARG:%.*]], i64 [[A:%.*]], i64 [[B:%.*]], i64 [[C:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP1:%.*]] = mul i64 [[TMP0]], 8
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 1001, [[TMP1]]
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP3:%.*]] = mul i64 [[TMP2]], 8
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 1001, [[TMP3]]
; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 1001, [[N_MOD_VF]]
; CHECK-NEXT: [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP5:%.*]] = mul i64 [[TMP4]], 8
; CHECK-NEXT: [[TMP6:%.*]] = call <vscale x 8 x i64> @llvm.stepvector.nxv8i64()
; CHECK-NEXT: [[TMP7:%.*]] = add <vscale x 8 x i64> [[TMP6]], zeroinitializer
; CHECK-NEXT: [[TMP8:%.*]] = mul <vscale x 8 x i64> [[TMP7]], shufflevector (<vscale x 8 x i64> insertelement (<vscale x 8 x i64> poison, i64 1, i64 0), <vscale x 8 x i64> poison, <vscale x 8 x i32> zeroinitializer)
; CHECK-NEXT: [[INDUCTION:%.*]] = add <vscale x 8 x i64> zeroinitializer, [[TMP8]]
; CHECK-NEXT: [[TMP11:%.*]] = mul i64 1, [[TMP5]]
; CHECK-NEXT: [[DOTSPLATINSERT:%.*]] = insertelement <vscale x 8 x i64> poison, i64 [[TMP11]], i64 0
; CHECK-NEXT: [[DOTSPLAT:%.*]] = shufflevector <vscale x 8 x i64> [[DOTSPLATINSERT]], <vscale x 8 x i64> poison, <vscale x 8 x i32> zeroinitializer
; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <vscale x 8 x i64> poison, i64 [[A]], i64 0
; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <vscale x 8 x i64> [[BROADCAST_SPLATINSERT]], <vscale x 8 x i64> poison, <vscale x 8 x i32> zeroinitializer
; CHECK-NEXT: [[BROADCAST_SPLATINSERT1:%.*]] = insertelement <vscale x 8 x i64> poison, i64 [[B]], i64 0
; CHECK-NEXT: [[BROADCAST_SPLAT2:%.*]] = shufflevector <vscale x 8 x i64> [[BROADCAST_SPLATINSERT1]], <vscale x 8 x i64> poison, <vscale x 8 x i32> zeroinitializer
; CHECK-NEXT: [[BROADCAST_SPLATINSERT3:%.*]] = insertelement <vscale x 8 x i64> poison, i64 [[C]], i64 0
; CHECK-NEXT: [[BROADCAST_SPLAT4:%.*]] = shufflevector <vscale x 8 x i64> [[BROADCAST_SPLATINSERT3]], <vscale x 8 x i64> poison, <vscale x 8 x i32> zeroinitializer
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[VEC_IND:%.*]] = phi <vscale x 8 x i64> [ [[INDUCTION]], [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP12:%.*]] = add i64 [[INDEX]], 0
; CHECK-NEXT: [[TMP13:%.*]] = icmp ule <vscale x 8 x i64> [[VEC_IND]], [[BROADCAST_SPLAT]]
; CHECK-NEXT: [[TMP14:%.*]] = icmp ule <vscale x 8 x i64> [[VEC_IND]], [[BROADCAST_SPLAT2]]
; CHECK-NEXT: [[TMP15:%.*]] = select <vscale x 8 x i1> [[TMP13]], <vscale x 8 x i1> [[TMP14]], <vscale x 8 x i1> zeroinitializer
; CHECK-NEXT: [[TMP16:%.*]] = xor <vscale x 8 x i1> [[TMP13]], shufflevector (<vscale x 8 x i1> insertelement (<vscale x 8 x i1> poison, i1 true, i64 0), <vscale x 8 x i1> poison, <vscale x 8 x i32> zeroinitializer)
; CHECK-NEXT: [[TMP17:%.*]] = or <vscale x 8 x i1> [[TMP15]], [[TMP16]]
; CHECK-NEXT: [[TMP18:%.*]] = icmp ule <vscale x 8 x i64> [[VEC_IND]], [[BROADCAST_SPLAT4]]
; CHECK-NEXT: [[TMP19:%.*]] = select <vscale x 8 x i1> [[TMP17]], <vscale x 8 x i1> [[TMP18]], <vscale x 8 x i1> zeroinitializer
; CHECK-NEXT: [[TMP20:%.*]] = xor <vscale x 8 x i1> [[TMP14]], shufflevector (<vscale x 8 x i1> insertelement (<vscale x 8 x i1> poison, i1 true, i64 0), <vscale x 8 x i1> poison, <vscale x 8 x i32> zeroinitializer)
; CHECK-NEXT: [[TMP21:%.*]] = select <vscale x 8 x i1> [[TMP13]], <vscale x 8 x i1> [[TMP20]], <vscale x 8 x i1> zeroinitializer
; CHECK-NEXT: [[TMP22:%.*]] = or <vscale x 8 x i1> [[TMP19]], [[TMP21]]
; CHECK-NEXT: [[EXT:%.+]] = extractelement <vscale x 8 x i1> [[TMP19]], i32 0
; CHECK-NEXT: [[PREDPHI:%.*]] = select i1 [[EXT]], i64 [[TMP12]], i64 poison
; CHECK-NEXT: [[TMP24:%.*]] = getelementptr i16, ptr [[ARG]], i64 [[PREDPHI]]
; CHECK-NEXT: [[TMP25:%.*]] = getelementptr i16, ptr [[TMP24]], i32 0
; CHECK-NEXT: call void @llvm.masked.store.nxv8i16.p0(<vscale x 8 x i16> zeroinitializer, ptr [[TMP25]], i32 2, <vscale x 8 x i1> [[TMP22]])
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]]
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <vscale x 8 x i64> [[VEC_IND]], [[DOTSPLAT]]
; CHECK-NEXT: [[TMP26:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP26]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 1001, [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
; CHECK: loop.header:
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
; CHECK-NEXT: [[C_1:%.*]] = icmp ule i64 [[IV]], [[A]]
; CHECK-NEXT: br i1 [[C_1]], label [[THEN_1:%.*]], label [[ELSE_1:%.*]]
; CHECK: then.1:
; CHECK-NEXT: [[C_2:%.*]] = icmp ule i64 [[IV]], [[B]]
; CHECK-NEXT: br i1 [[C_2]], label [[ELSE_1]], label [[MERGE:%.*]]
; CHECK: else.1:
; CHECK-NEXT: [[C_3:%.*]] = icmp ule i64 [[IV]], [[C]]
; CHECK-NEXT: br i1 [[C_3]], label [[THEN_2:%.*]], label [[LOOP_LATCH]]
; CHECK: then.2:
; CHECK-NEXT: br label [[MERGE]]
; CHECK: merge:
; CHECK-NEXT: [[IDX:%.*]] = phi i64 [ poison, [[THEN_1]] ], [ [[IV]], [[THEN_2]] ]
; CHECK-NEXT: [[GETELEMENTPTR:%.*]] = getelementptr i16, ptr [[ARG]], i64 [[IDX]]
; CHECK-NEXT: store i16 0, ptr [[GETELEMENTPTR]], align 2
; CHECK-NEXT: br label [[LOOP_LATCH]]
; CHECK: loop.latch:
; CHECK-NEXT: [[IV_NEXT]] = add i64 [[IV]], 1
; CHECK-NEXT: [[ICMP:%.*]] = icmp eq i64 [[IV]], 1000
; CHECK-NEXT: br i1 [[ICMP]], label [[EXIT]], label [[LOOP_HEADER]], !llvm.loop [[LOOP3:![0-9]+]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
br label %loop.header
loop.header:
%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]
%c.1 = icmp ule i64 %iv, %a
br i1 %c.1, label %then.1, label %else.1
then.1:
%c.2 = icmp ule i64 %iv, %b
br i1 %c.2, label %else.1, label %merge
else.1:
%c.3 = icmp ule i64 %iv, %c
br i1 %c.3, label %then.2, label %loop.latch
then.2:
br label %merge
merge:
%idx = phi i64 [ poison, %then.1 ], [ %iv, %then.2 ]
%getelementptr = getelementptr i16, ptr %arg, i64 %idx
store i16 0, ptr %getelementptr, align 2
br label %loop.latch
loop.latch:
%iv.next = add i64 %iv, 1
%icmp = icmp eq i64 %iv, 1000
br i1 %icmp, label %exit, label %loop.header
exit:
ret void
}
;.
; CHECK: [[LOOP0]] = distinct !{[[LOOP0]], [[META1:![0-9]+]], [[META2:![0-9]+]]}
; CHECK: [[META1]] = !{!"llvm.loop.isvectorized", i32 1}
; CHECK: [[META2]] = !{!"llvm.loop.unroll.runtime.disable"}
; CHECK: [[LOOP3]] = distinct !{[[LOOP3]], [[META2]], [[META1]]}
;.
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