ce358262eb
Summary: This feature is not needed, but it might be usefull in the future to use metadata to mark what which function should support it (and strip it when not). Reviewers: rsmith, sanjoy, amharc, kuhar Subscribers: hiraditya, llvm-commits Differential Revision: https://reviews.llvm.org/D45419 llvm-svn: 332787
25 lines
595 B
LLVM
25 lines
595 B
LLVM
; RUN: opt -codegenprepare -S < %s | FileCheck %s
|
|
|
|
@tmp = global i8 0
|
|
|
|
; CHECK-LABEL: define void @foo() {
|
|
define void @foo() {
|
|
enter:
|
|
; CHECK-NOT: !invariant.group
|
|
; CHECK-NOT: @llvm.launder.invariant.group.p0i8(
|
|
; CHECK: %val = load i8, i8* @tmp, !tbaa
|
|
%val = load i8, i8* @tmp, !invariant.group !0, !tbaa !{!1, !1, i64 0}
|
|
%ptr = call i8* @llvm.launder.invariant.group.p0i8(i8* @tmp)
|
|
|
|
; CHECK: store i8 42, i8* @tmp{{$}}
|
|
store i8 42, i8* %ptr, !invariant.group !0
|
|
|
|
ret void
|
|
}
|
|
; CHECK-LABEL: }
|
|
|
|
declare i8* @llvm.launder.invariant.group.p0i8(i8*)
|
|
|
|
!0 = !{}
|
|
!1 = !{!"x", !0}
|