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| author | Nick Lewycky <nicholas@mxc.ca> | 2011-05-22 05:22:10 +0000 |
|---|---|---|
| committer | Nick Lewycky <nicholas@mxc.ca> | 2011-05-22 05:22:10 +0000 |
| commit | 6d55f2269e20298a1d6a683be72d9552482156a9 (patch) | |
| tree | 120cf5335e916d8079373f6d62d6b00cd71f2fbc /test/Transforms | |
| parent | 9063b55f9b51850fa5f77abc699ab53ec639d9be (diff) | |
| download | llvm-6d55f2269e20298a1d6a683be72d9552482156a9.tar.gz llvm-6d55f2269e20298a1d6a683be72d9552482156a9.tar.bz2 llvm-6d55f2269e20298a1d6a683be72d9552482156a9.tar.xz | |
Teach the inliner to emit llvm.lifetime.start/end, to scope the local variables
of the inlinee to the code representing the original function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131838 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms')
| -rw-r--r-- | test/Transforms/Inline/lifetime.ll | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/test/Transforms/Inline/lifetime.ll b/test/Transforms/Inline/lifetime.ll new file mode 100644 index 0000000000..a95c836b77 --- /dev/null +++ b/test/Transforms/Inline/lifetime.ll @@ -0,0 +1,78 @@ +; RUN: opt -inline %s -S -o - | FileCheck %s + +declare void @llvm.lifetime.start(i64, i8*) +declare void @llvm.lifetime.end(i64, i8*) + +define void @helper_both_markers() { + %a = alloca i8 + call void @llvm.lifetime.start(i64 1, i8* %a) + call void @llvm.lifetime.end(i64 1, i8* %a) + ret void +} + +define void @test_both_markers() { +; CHECK: @test_both_markers +; CHECK: llvm.lifetime.start(i64 1 +; CHECK-NEXT: llvm.lifetime.end(i64 1 + call void @helper_both_markers() +; CHECK-NEXT: llvm.lifetime.start(i64 1 +; CHECK-NEXT: llvm.lifetime.end(i64 1 + call void @helper_both_markers() +; CHECK-NEXT: ret void + ret void +} + +;; Without this, the inliner will simplify out @test_no_marker before adding +;; any lifetime markers. +declare void @use(i8* %a) + +define void @helper_no_markers() { + %a = alloca i8 + call void @use(i8* %a) + ret void +} + +;; We can't use CHECK-NEXT because there's an extra call void @use in between. +;; Instead, we use CHECK-NOT to verify that there are no other lifetime calls. +define void @test_no_marker() { +; CHECK: @test_no_marker +; CHECK-NOT: lifetime +; CHECK: llvm.lifetime.start(i64 -1 +; CHECK-NOT: lifetime +; CHECK: llvm.lifetime.end(i64 -1 + call void @helper_no_markers() +; CHECK-NOT: lifetime +; CHECK: llvm.lifetime.start(i64 -1 +; CHECK-NOT: lifetime +; CHECK: llvm.lifetime.end(i64 -1 + call void @helper_no_markers() +; CHECK-NOT: lifetime +; CHECK: ret void + ret void +} + +define void @helper_two_casts() { + %a = alloca i32 + %b = bitcast i32* %a to i8* + call void @llvm.lifetime.start(i64 4, i8* %b) + %c = bitcast i32* %a to i8* + call void @llvm.lifetime.end(i64 4, i8* %c) + ret void +} + +define void @test_two_casts() { +; CHECK: @test_two_casts +; CHECK-NOT: lifetime +; CHECK: llvm.lifetime.start(i64 4 +; CHECK-NOT: lifetime +; CHECK: llvm.lifetime.end(i64 4 + call void @helper_two_casts() +; CHECK-NOT: lifetime +; CHECK: llvm.lifetime.start(i64 4 +; CHECK-NOT: lifetime +; CHECK: llvm.lifetime.end(i64 4 + call void @helper_two_casts() +; CHECK-NOT: lifetime +; CHECK: ret void + ret void +} |