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| author | Duncan Sands <baldrick@free.fr> | 2009-11-10 13:49:50 +0000 |
|---|---|---|
| committer | Duncan Sands <baldrick@free.fr> | 2009-11-10 13:49:50 +0000 |
| commit | 710c37c494229334f59b9be328366807db2a7d01 (patch) | |
| tree | 8d7374d97bcfa2d82ff170e2e356e0699fa1fa05 /test/Transforms/DeadStoreElimination | |
| parent | e9097f7438cceb80871cda5f2cecb51e6639b3cc (diff) | |
| download | llvm-710c37c494229334f59b9be328366807db2a7d01.tar.gz llvm-710c37c494229334f59b9be328366807db2a7d01.tar.bz2 llvm-710c37c494229334f59b9be328366807db2a7d01.tar.xz | |
Teach DSE to eliminate useless trampolines.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86683 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/DeadStoreElimination')
| -rw-r--r-- | test/Transforms/DeadStoreElimination/2009-11-10-Trampoline.ll | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/test/Transforms/DeadStoreElimination/2009-11-10-Trampoline.ll b/test/Transforms/DeadStoreElimination/2009-11-10-Trampoline.ll new file mode 100644 index 0000000000..9a943b4760 --- /dev/null +++ b/test/Transforms/DeadStoreElimination/2009-11-10-Trampoline.ll @@ -0,0 +1,16 @@ +; RUN: opt -S -dse < %s | FileCheck %s + +declare i8* @llvm.init.trampoline(i8*, i8*, i8*) + +declare void @f() + +define void @unused_trampoline() { +; CHECK: @unused_trampoline + %storage = alloca [10 x i8], align 16 ; <[10 x i8]*> [#uses=1] +; CHECK-NOT: alloca + %cast = getelementptr [10 x i8]* %storage, i32 0, i32 0 ; <i8*> [#uses=1] + %tramp = call i8* @llvm.init.trampoline( i8* %cast, i8* bitcast (void ()* @f to i8*), i8* null ) ; <i8*> [#uses=1] +; CHECK-NOT: trampoline + ret void +; CHECK: ret void +} |