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