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| author | Shih-wei Liao <sliao@google.com> | 2010-02-10 11:10:31 -0800 |
|---|---|---|
| committer | Shih-wei Liao <sliao@google.com> | 2010-02-10 11:10:31 -0800 |
| commit | e264f62ca09a8f65c87a46d562a4d0f9ec5d457e (patch) | |
| tree | 59e3d57ef656cef79afa708ae0a3daf25cd91fcf /test/Transforms/GVN/2008-02-12-UndefLoad.ll | |
| download | external_llvm-e264f62ca09a8f65c87a46d562a4d0f9ec5d457e.zip external_llvm-e264f62ca09a8f65c87a46d562a4d0f9ec5d457e.tar.gz external_llvm-e264f62ca09a8f65c87a46d562a4d0f9ec5d457e.tar.bz2 | |
Check in LLVM r95781.
Diffstat (limited to 'test/Transforms/GVN/2008-02-12-UndefLoad.ll')
| -rw-r--r-- | test/Transforms/GVN/2008-02-12-UndefLoad.ll | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/test/Transforms/GVN/2008-02-12-UndefLoad.ll b/test/Transforms/GVN/2008-02-12-UndefLoad.ll new file mode 100644 index 0000000..de2aa61 --- /dev/null +++ b/test/Transforms/GVN/2008-02-12-UndefLoad.ll @@ -0,0 +1,20 @@ +; RUN: opt < %s -gvn -S | not grep load +; PR1996 + +%struct.anon = type { i32, i8, i8, i8, i8 } + +define i32 @a() { +entry: + %c = alloca %struct.anon ; <%struct.anon*> [#uses=2] + %tmp = getelementptr %struct.anon* %c, i32 0, i32 0 ; <i32*> [#uses=1] + %tmp1 = getelementptr i32* %tmp, i32 1 ; <i32*> [#uses=2] + %tmp2 = load i32* %tmp1, align 4 ; <i32> [#uses=1] + %tmp3 = or i32 %tmp2, 11 ; <i32> [#uses=1] + %tmp4 = and i32 %tmp3, -21 ; <i32> [#uses=1] + store i32 %tmp4, i32* %tmp1, align 4 + %call = call i32 (...)* @x( %struct.anon* %c ) ; <i32> [#uses=0] + ret i32 undef +} + + +declare i32 @x(...) |