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Diffstat (limited to 'test/Transforms/DeadStoreElimination/lifetime-simple.ll')
| -rw-r--r-- | test/Transforms/DeadStoreElimination/lifetime-simple.ll | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/test/Transforms/DeadStoreElimination/lifetime-simple.ll b/test/Transforms/DeadStoreElimination/lifetime-simple.ll new file mode 100644 index 0000000000000..430e7006351d8 --- /dev/null +++ b/test/Transforms/DeadStoreElimination/lifetime-simple.ll @@ -0,0 +1,18 @@ +; RUN: opt < %s -dse -S | FileCheck %s + +target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128" +target triple = "i386-apple-darwin7" + +define i8 @test2(i8* %P) nounwind { +; CHECK: @test2 +; CHECK-NOT: store i8 1 +; CHECK: ret i8 0 +entry: + call void @llvm.lifetime.start(i64 32, i8* %P) + call void @llvm.lifetime.end(i64 32, i8* %P) + store i8 1, i8* %P + ret i8 0 +} + +declare {}* @llvm.lifetime.start(i64 %S, i8* nocapture %P) readonly +declare void @llvm.lifetime.end(i64 %S, i8* nocapture %P)
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