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| author | Nick Lewycky <nicholas@mxc.ca> | 2011-08-02 21:19:27 +0000 |
|---|---|---|
| committer | Nick Lewycky <nicholas@mxc.ca> | 2011-08-02 21:19:27 +0000 |
| commit | 99890a225f80495468174becb876a560f4383cea (patch) | |
| tree | 5da3db64890fdf6a311da83e361591d663e7604a /llvm/test/Transforms/InstCombine | |
| parent | 8c9d9b2f0f414aeb2bd3fb929028d2ed5293bb42 (diff) | |
| download | bcm5719-llvm-99890a225f80495468174becb876a560f4383cea.tar.gz bcm5719-llvm-99890a225f80495468174becb876a560f4383cea.zip | |
Lifetime intrinsics on undef are dead.
llvm-svn: 136722
Diffstat (limited to 'llvm/test/Transforms/InstCombine')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/deadcode.ll | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/llvm/test/Transforms/InstCombine/deadcode.ll b/llvm/test/Transforms/InstCombine/deadcode.ll index 52af0ef4e8d..7c7f1abc0ca 100644 --- a/llvm/test/Transforms/InstCombine/deadcode.ll +++ b/llvm/test/Transforms/InstCombine/deadcode.ll @@ -1,5 +1,5 @@ ; RUN: opt < %s -instcombine -S | grep {ret i32 %A} -; RUN: opt < %s -die -S | not grep call.*llvm.stacksave +; RUN: opt < %s -die -S | not grep call.*llvm define i32 @test(i32 %A) { %X = or i1 false, false @@ -22,3 +22,12 @@ define i32* @test2(i32 %width) { declare i8* @llvm.stacksave() +declare void @llvm.lifetime.start(i64, i8*) +declare void @llvm.lifetime.end(i64, i8*) + +define void @test3() { + call void @llvm.lifetime.start(i64 -1, i8* undef) + call void @llvm.lifetime.end(i64 -1, i8* undef) + ret void +} + |
