mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-21 00:32:23 +00:00
208d92c143
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131845 91177308-0d34-0410-b5e6-96231b3b80d8
31 lines
930 B
LLVM
31 lines
930 B
LLVM
; RUN: opt -tbaa -basicaa -gvn -S < %s | FileCheck %s
|
|
|
|
target datalayout = "e-p:64:64:64"
|
|
|
|
; GVN should preserve the TBAA tag on loads when doing PRE.
|
|
|
|
; CHECK: @test
|
|
; CHECK: %tmp33.pre = load i16* %P, align 2, !tbaa !0
|
|
; CHECK: br label %for.body
|
|
define void @test(i16 *%P, i16* %Q) nounwind {
|
|
entry:
|
|
br i1 undef, label %bb.nph, label %for.end
|
|
|
|
bb.nph: ; preds = %entry
|
|
br label %for.body
|
|
|
|
for.body: ; preds = %for.body, %bb.nph
|
|
%tmp33 = load i16* %P, align 2, !tbaa !0
|
|
store i16 %tmp33, i16* %Q
|
|
|
|
store i16 0, i16* %P, align 2, !tbaa !0
|
|
br i1 false, label %for.end, label %for.body
|
|
|
|
for.end: ; preds = %for.body, %entry
|
|
ret void
|
|
}
|
|
|
|
!0 = metadata !{metadata !"short", metadata !1}
|
|
!1 = metadata !{metadata !"omnipotent char", metadata !2}
|
|
!2 = metadata !{metadata !"Simple C/C++ TBAA", null}
|