1; RUN: opt < %s -tsan -S -enable-new-pm=0 | FileCheck %s
2; RUN: opt < %s -passes='function(tsan),module(tsan-module)' -S | FileCheck %s
3
4target 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"
5target triple = "x86_64-unknown-linux-gnu"
6
7define i32 @read_4_bytes(i32* %a) sanitize_thread {
8entry:
9  %tmp1 = load i32, i32* %a, align 4
10  ret i32 %tmp1
11}
12
13; CHECK: @llvm.used = appending global [1 x i8*] [i8* bitcast (void ()* @tsan.module_ctor to i8*)]
14; CHECK: @llvm.global_ctors = {{.*}}@tsan.module_ctor
15
16; CHECK: define i32 @read_4_bytes(i32* %a)
17; CHECK:        call void @__tsan_func_entry(i8* %0)
18; CHECK-NEXT:   %1 = bitcast i32* %a to i8*
19; CHECK-NEXT:   call void @__tsan_read4(i8* %1)
20; CHECK-NEXT:   %tmp1 = load i32, i32* %a, align 4
21; CHECK-NEXT:   call void @__tsan_func_exit()
22; CHECK: ret i32
23
24
25declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i1)
26declare void @llvm.memmove.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i1)
27declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i1)
28
29
30; Check that tsan converts mem intrinsics back to function calls.
31
32define void @MemCpyTest(i8* nocapture %x, i8* nocapture %y) sanitize_thread {
33entry:
34    tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %x, i8* align 4 %y, i64 16, i1 false)
35    ret void
36; CHECK: define void @MemCpyTest
37; CHECK: call i8* @memcpy
38; CHECK: ret void
39}
40
41define void @MemMoveTest(i8* nocapture %x, i8* nocapture %y) sanitize_thread {
42entry:
43    tail call void @llvm.memmove.p0i8.p0i8.i64(i8* align 4 %x, i8* align 4 %y, i64 16, i1 false)
44    ret void
45; CHECK: define void @MemMoveTest
46; CHECK: call i8* @memmove
47; CHECK: ret void
48}
49
50define void @MemSetTest(i8* nocapture %x) sanitize_thread {
51entry:
52    tail call void @llvm.memset.p0i8.i64(i8* align 4 %x, i8 77, i64 16, i1 false)
53    ret void
54; CHECK: define void @MemSetTest
55; CHECK: call i8* @memset
56; CHECK: ret void
57}
58
59; CHECK-LABEL: @SwiftError
60; CHECK-NOT: __tsan_read
61; CHECK-NOT: __tsan_write
62; CHECK: ret
63define void @SwiftError(i8** swifterror) sanitize_thread {
64  %swifterror_ptr_value = load i8*, i8** %0
65  store i8* null, i8** %0
66  %swifterror_addr = alloca swifterror i8*
67  %swifterror_ptr_value_2 = load i8*, i8** %swifterror_addr
68  store i8* null, i8** %swifterror_addr
69  ret void
70}
71
72; CHECK-LABEL: @SwiftErrorCall
73; CHECK-NOT: __tsan_read
74; CHECK-NOT: __tsan_write
75; CHECK: ret
76define void @SwiftErrorCall(i8** swifterror) sanitize_thread {
77  %swifterror_addr = alloca swifterror i8*
78  store i8* null, i8** %0
79  call void @SwiftError(i8** %0)
80  ret void
81}
82
83; CHECK-LABEL: @NakedTest(i32* %a)
84; CHECK-NEXT:   call void @foo()
85; CHECK-NEXT:   %tmp1 = load i32, i32* %a, align 4
86; CHECK-NEXT:   ret i32 %tmp1
87define i32 @NakedTest(i32* %a) naked sanitize_thread {
88  call void @foo()
89  %tmp1 = load i32, i32* %a, align 4
90  ret i32 %tmp1
91}
92
93declare void @foo() nounwind
94
95; CHECK: define internal void @tsan.module_ctor()
96; CHECK: call void @__tsan_init()
97