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| author | Nick Lewycky <nicholas@mxc.ca> | 2012-10-11 02:05:23 +0000 |
|---|---|---|
| committer | Nick Lewycky <nicholas@mxc.ca> | 2012-10-11 02:05:23 +0000 |
| commit | 5e01f80bf85b9a68352d4c146caa9ddcf6af6dcf (patch) | |
| tree | ebe8bc0c8e44eace3c7765aa2a4509813222f515 /test/Transforms | |
| parent | e0297196edbe6539e7d3269fa19f84e04dd0a9cd (diff) | |
| download | llvm-5e01f80bf85b9a68352d4c146caa9ddcf6af6dcf.tar.gz llvm-5e01f80bf85b9a68352d4c146caa9ddcf6af6dcf.tar.bz2 llvm-5e01f80bf85b9a68352d4c146caa9ddcf6af6dcf.tar.xz | |
Don't crash when !tbaa.struct contents is invalid.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165693 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms')
| -rw-r--r-- | test/Transforms/InstCombine/struct-assign-tbaa.ll | 30 |
1 files changed, 24 insertions, 6 deletions
diff --git a/test/Transforms/InstCombine/struct-assign-tbaa.ll b/test/Transforms/InstCombine/struct-assign-tbaa.ll index 4fbdb0ab67..33a771e6d8 100644 --- a/test/Transforms/InstCombine/struct-assign-tbaa.ll +++ b/test/Transforms/InstCombine/struct-assign-tbaa.ll @@ -2,25 +2,43 @@ target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" -%struct.foo = type { float } +declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind ; Verify that instcombine preserves TBAA tags when converting a memcpy into ; a scalar load and store. +%struct.test1 = type { float } + +; CHECK: @test ; CHECK: %2 = load float* %0, align 4, !tbaa !0 ; CHECK: store float %2, float* %1, align 4, !tbaa !0 -; CHECK: !0 = metadata !{metadata !"float", metadata !1} -define void @test(%struct.foo* nocapture %a, %struct.foo* nocapture %b) { +; CHECK: ret +define void @test1(%struct.test1* nocapture %a, %struct.test1* nocapture %b) { entry: - %0 = bitcast %struct.foo* %a to i8* - %1 = bitcast %struct.foo* %b to i8* + %0 = bitcast %struct.test1* %a to i8* + %1 = bitcast %struct.test1* %b to i8* tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 4, i32 4, i1 false), !tbaa.struct !3 ret void } -declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind +%struct.test2 = type { i32 (i8*, i32*, double*)** } + +define i32 (i8*, i32*, double*)*** @test2() { +; CHECK: @test2 +; CHECK-NOT: memcpy +; CHECK: ret + %tmp = alloca %struct.test2, align 8 + %tmp1 = bitcast %struct.test2* %tmp to i8* + call void @llvm.memcpy.p0i8.p0i8.i64(i8* %tmp1, i8* undef, i64 8, i32 8, i1 false), !tbaa.struct !4 + %tmp2 = getelementptr %struct.test2* %tmp, i32 0, i32 0 + %tmp3 = load i32 (i8*, i32*, double*)*** %tmp2 + ret i32 (i8*, i32*, double*)*** %tmp2 +} + +; CHECK: !0 = metadata !{metadata !"float", metadata !1} !0 = metadata !{metadata !"Simple C/C++ TBAA"} !1 = metadata !{metadata !"omnipotent char", metadata !0} !2 = metadata !{metadata !"float", metadata !0} !3 = metadata !{i64 0, i64 4, metadata !2} +!4 = metadata !{i64 0, i64 8, null} |