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| author | Rafael Espindola <rafael.espindola@gmail.com> | 2011-06-29 05:25:47 +0000 |
|---|---|---|
| committer | Rafael Espindola <rafael.espindola@gmail.com> | 2011-06-29 05:25:47 +0000 |
| commit | 0fb7dcd48fd6580e3ebf35eafa952a9fe1cac8b2 (patch) | |
| tree | 4e55e0e32667a7ed8150c8650358dd4498083c0d /test/Transforms | |
| parent | c4a84304a0a07b198e7dc3390b7afccf04e88b5c (diff) | |
Let simplify cfg simplify bb with only debug and lifetime intrinsics.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134057 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms')
| -rw-r--r-- | test/Transforms/SimplifyCFG/lifetime.ll | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/test/Transforms/SimplifyCFG/lifetime.ll b/test/Transforms/SimplifyCFG/lifetime.ll new file mode 100644 index 0000000000..b794221725 --- /dev/null +++ b/test/Transforms/SimplifyCFG/lifetime.ll @@ -0,0 +1,29 @@ +; RUN: opt < %s -simplifycfg -S | FileCheck %s + +; Test that a lifetime intrinsic doesn't prevent us from simplifying this. + +; CHECK: foo +; CHECK: entry: +; CHECK-NOT: bb0: +; CHECK-NOT: bb1: +; CHECK: ret +define void @foo(i1 %x) { +entry: + %a = alloca i8 + call void @llvm.lifetime.start(i64 -1, i8* %a) nounwind + br i1 %x, label %bb0, label %bb1 + +bb0: + call void @llvm.lifetime.end(i64 -1, i8* %a) nounwind + br label %bb1 + +bb1: + call void @f() + ret void +} + +declare void @f() + +declare void @llvm.lifetime.start(i64, i8* nocapture) nounwind + +declare void @llvm.lifetime.end(i64, i8* nocapture) nounwind |