27 lines
1.0 KiB
LLVM
27 lines
1.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt -S -passes=instcombine < %s | FileCheck %s
|
|
|
|
; This test used to cause an infinite loop in the load/store min/max bitcast
|
|
; transform.
|
|
|
|
define void @test(ptr %p, ptr %p2) {
|
|
; CHECK-LABEL: @test(
|
|
; CHECK-NEXT: [[V:%.*]] = load i32, ptr [[P:%.*]], align 4
|
|
; CHECK-NEXT: [[V2:%.*]] = load i32, ptr [[P2:%.*]], align 4
|
|
; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.umin.i32(i32 [[V2]], i32 [[V]])
|
|
; CHECK-NEXT: store i32 [[TMP1]], ptr [[P]], align 4
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
%v = load i32, ptr %p, align 4
|
|
%v2 = load i32, ptr %p2, align 4
|
|
%cmp = icmp ult i32 %v2, %v
|
|
%sel = select i1 %cmp, ptr %p2, ptr %p
|
|
call void @llvm.memcpy.p0.p0.i64(ptr align 4 %p, ptr align 4 %sel, i64 4, i1 false)
|
|
ret void
|
|
}
|
|
|
|
; Function Attrs: argmemonly nounwind willreturn
|
|
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #0
|
|
|
|
attributes #0 = { argmemonly nounwind willreturn }
|