| Dmitry Vyukov | 55e63ef | 2013-03-22 08:51:22 +0000 | [diff] [blame^] | 1 | ; RUN: opt < %s -tsan -S | FileCheck %s |
| 2 | ; Check that vptr reads are treated in a special way. |
| 3 | 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" |
| 4 | |
| 5 | define i8 @Foo(i8* %a) nounwind uwtable { |
| 6 | entry: |
| 7 | ; CHECK: call void @__tsan_vptr_read |
| 8 | %0 = load i8* %a, align 8, !tbaa !0 |
| 9 | ret i8 %0 |
| 10 | } |
| 11 | !0 = metadata !{metadata !"vtable pointer", metadata !1} |
| 12 | !1 = metadata !{metadata !"Simple C/C++ TBAA", null} |
| 13 | |