d1314d0152
Relates to (but isn't dependent on) #120420. This allows alias analysis o the intrinsic of the same quality as for the libcall, which we want in order to move LoopIdiomRecognize over to selecting the intrinsic.
19 lines
976 B
LLVM
19 lines
976 B
LLVM
; RUN: opt -mtriple=x86_64 -aa-pipeline=basic-aa -passes=inferattrs,aa-eval -print-all-alias-modref-info -disable-output 2>&1 %s | FileCheck %s
|
|
|
|
define void @test_memset_pattern4_const_size(ptr noalias %a, i32 %pattern) {
|
|
; CHECK-LABEL: Function: test_memset_pattern4_const_size
|
|
; CHECK: Just Mod: Ptr: i8* %a <-> call void @llvm.experimental.memset.pattern.p0.i32.i64(ptr %a, i32 %pattern, i64 17, i1 false)
|
|
; CHECK-NEXT: Just Mod: Ptr: i8* %a.gep.1 <-> call void @llvm.experimental.memset.pattern.p0.i32.i64(ptr %a, i32 %pattern, i64 17, i1 false)
|
|
; CHECK-NEXT: NoModRef: Ptr: i8* %a.gep.129 <-> call void @llvm.experimental.memset.pattern.p0.i32.i64(ptr %a, i32 %pattern, i64 17, i1 false)
|
|
|
|
entry:
|
|
load i8, ptr %a
|
|
call void @llvm.experimental.memset.pattern(ptr %a, i32 %pattern, i64 17, i1 0)
|
|
%a.gep.1 = getelementptr i8, ptr %a, i32 1
|
|
store i8 0, ptr %a.gep.1
|
|
%a.gep.129 = getelementptr i8, ptr %a, i32 129
|
|
store i8 1, ptr %a.gep.129
|
|
|
|
ret void
|
|
}
|