diff options
| author | Dmitry Vyukov <dvyukov@google.com> | 2013-03-22 08:51:22 +0000 |
|---|---|---|
| committer | Dmitry Vyukov <dvyukov@google.com> | 2013-03-22 08:51:22 +0000 |
| commit | ab78ac1a2d55cd81e42f4688fbaa7bd689e6291f (patch) | |
| tree | 7a281667154aab04e6fccc4ec787c725722a3d54 /test/Instrumentation/ThreadSanitizer/vptr_read.ll | |
| parent | 7541cd36fdd1bd044e22497838faac7b8f7e48cd (diff) | |
tsan: handle vptr loads specially
This is required to determine ctor/dtor vs virtual call races.
http://llvm-reviews.chandlerc.com/D566
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177717 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Instrumentation/ThreadSanitizer/vptr_read.ll')
| -rw-r--r-- | test/Instrumentation/ThreadSanitizer/vptr_read.ll | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/test/Instrumentation/ThreadSanitizer/vptr_read.ll b/test/Instrumentation/ThreadSanitizer/vptr_read.ll new file mode 100644 index 0000000000..404ca3ffe5 --- /dev/null +++ b/test/Instrumentation/ThreadSanitizer/vptr_read.ll @@ -0,0 +1,13 @@ +; RUN: opt < %s -tsan -S | FileCheck %s +; Check that vptr reads are treated in a special way. +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" + +define i8 @Foo(i8* %a) nounwind uwtable { +entry: +; CHECK: call void @__tsan_vptr_read + %0 = load i8* %a, align 8, !tbaa !0 + ret i8 %0 +} +!0 = metadata !{metadata !"vtable pointer", metadata !1} +!1 = metadata !{metadata !"Simple C/C++ TBAA", null} + |