1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
; RUN: opt < %s -passes=tsan -S | FileCheck %s
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"
target triple = "x86_64-unknown-linux-gnu"
; no sanitize_thread attribute here
define i32 @read_4_bytes(ptr %a) {
entry:
%tmp1 = load i32, ptr %a, align 4
ret i32 %tmp1
}
; CHECK: define i32 @read_4_bytes(ptr %a) {
; CHECK-NEXT: entry:
; CHECK-NEXT: %tmp1 = load i32, ptr %a, align 4
; CHECK: ret i32 %tmp1
; no sanitize_thread attribute here
define i32 @read_4_bytes_and_call(ptr %a) {
entry:
call void @foo()
%tmp1 = load i32, ptr %a, align 4
ret i32 %tmp1
}
; CHECK: define i32 @read_4_bytes_and_call(ptr %a) {
; CHECK-NEXT: entry:
; CHECK-NEXT: %0 = call ptr @llvm.returnaddress(i32 0)
; CHECK-NEXT: call void @__tsan_func_entry(ptr %0)
; CHECK-NEXT: call void @foo()
; CHECK-NEXT: %tmp1 = load i32, ptr %a, align 4
; CHECK-NEXT: call void @__tsan_func_exit()
; CHECK-NEXT: ret i32 %tmp1
declare void @foo() nounwind
|
