forked from OSchip/llvm-project
30 lines
1.1 KiB
LLVM
30 lines
1.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -instcombine < %s | FileCheck %s
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; This test used to cause an infinite loop in the load/store min/max bitcast
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; transform.
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define void @test(i32* %p, i32* %p2) {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: [[V:%.*]] = load i32, i32* [[P:%.*]], align 4
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; CHECK-NEXT: [[V2:%.*]] = load i32, i32* [[P2:%.*]], align 4
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[V2]], [[V]]
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; CHECK-NEXT: [[TMP1:%.*]] = select i1 [[CMP]], i32 [[V2]], i32 [[V]]
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; CHECK-NEXT: store i32 [[TMP1]], i32* [[P]], align 4
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; CHECK-NEXT: ret void
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;
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%v = load i32, i32* %p, align 4
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%v2 = load i32, i32* %p2, align 4
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%cmp = icmp ult i32 %v2, %v
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%sel = select i1 %cmp, i32* %p2, i32* %p
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%p8 = bitcast i32* %p to i8*
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%sel8 = bitcast i32* %sel to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %p8, i8* align 4 %sel8, i64 4, i1 false)
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ret void
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}
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; Function Attrs: argmemonly nounwind willreturn
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8* noalias nocapture writeonly, i8* noalias nocapture readonly, i64, i1 immarg) #0
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attributes #0 = { argmemonly nounwind willreturn }
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