| Dmitry Vyukov | 2e8d82e | 2015-02-12 09:55:28 +0000 | [diff] [blame^] | 1 | ; RUN: opt < %s -tsan -S | FileCheck %s |
| 2 | |
| 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 | declare void @escape(i32*) |
| 6 | |
| 7 | @sink = global i32* null, align 4 |
| 8 | |
| 9 | define void @captured0() nounwind uwtable sanitize_thread { |
| 10 | entry: |
| 11 | %ptr = alloca i32, align 4 |
| 12 | ; escapes due to call |
| 13 | call void @escape(i32* %ptr) |
| 14 | store i32 42, i32* %ptr, align 4 |
| 15 | ret void |
| 16 | } |
| 17 | ; CHECK-LABEL: define void @captured0 |
| 18 | ; CHECK: __tsan_write |
| 19 | ; CHECK: ret void |
| 20 | |
| 21 | define void @captured1() nounwind uwtable sanitize_thread { |
| 22 | entry: |
| 23 | %ptr = alloca i32, align 4 |
| 24 | ; escapes due to store into global |
| 25 | store i32* %ptr, i32** @sink, align 8 |
| 26 | store i32 42, i32* %ptr, align 4 |
| 27 | ret void |
| 28 | } |
| 29 | ; CHECK-LABEL: define void @captured1 |
| 30 | ; CHECK: __tsan_write |
| 31 | ; CHECK: __tsan_write |
| 32 | ; CHECK: ret void |
| 33 | |
| 34 | define void @captured2() nounwind uwtable sanitize_thread { |
| 35 | entry: |
| 36 | %ptr = alloca i32, align 4 |
| 37 | %tmp = alloca i32*, align 8 |
| 38 | ; transitive escape |
| 39 | store i32* %ptr, i32** %tmp, align 8 |
| 40 | %0 = load i32** %tmp, align 8 |
| 41 | store i32* %0, i32** @sink, align 8 |
| 42 | store i32 42, i32* %ptr, align 4 |
| 43 | ret void |
| 44 | } |
| 45 | ; CHECK-LABEL: define void @captured2 |
| 46 | ; CHECK: __tsan_write |
| 47 | ; CHECK: __tsan_write |
| 48 | ; CHECK: ret void |
| 49 | |
| 50 | define void @notcaptured0() nounwind uwtable sanitize_thread { |
| 51 | entry: |
| 52 | %ptr = alloca i32, align 4 |
| 53 | store i32 42, i32* %ptr, align 4 |
| 54 | ; escapes due to call |
| 55 | call void @escape(i32* %ptr) |
| 56 | ret void |
| 57 | } |
| 58 | ; CHECK-LABEL: define void @notcaptured0 |
| 59 | ; CHECK: __tsan_write |
| 60 | ; CHECK: ret void |
| 61 | |
| 62 | define void @notcaptured1() nounwind uwtable sanitize_thread { |
| 63 | entry: |
| 64 | %ptr = alloca i32, align 4 |
| 65 | store i32 42, i32* %ptr, align 4 |
| 66 | ; escapes due to store into global |
| 67 | store i32* %ptr, i32** @sink, align 8 |
| 68 | ret void |
| 69 | } |
| 70 | ; CHECK-LABEL: define void @notcaptured1 |
| 71 | ; CHECK: __tsan_write |
| 72 | ; CHECK: __tsan_write |
| 73 | ; CHECK: ret void |
| 74 | |
| 75 | define void @notcaptured2() nounwind uwtable sanitize_thread { |
| 76 | entry: |
| 77 | %ptr = alloca i32, align 4 |
| 78 | %tmp = alloca i32*, align 8 |
| 79 | store i32 42, i32* %ptr, align 4 |
| 80 | ; transitive escape |
| 81 | store i32* %ptr, i32** %tmp, align 8 |
| 82 | %0 = load i32** %tmp, align 8 |
| 83 | store i32* %0, i32** @sink, align 8 |
| 84 | ret void |
| 85 | } |
| 86 | ; CHECK-LABEL: define void @notcaptured2 |
| 87 | ; CHECK: __tsan_write |
| 88 | ; CHECK: __tsan_write |
| 89 | ; CHECK: ret void |
| 90 | |
| 91 | |