1 files changed, 36 insertions, 0 deletions
diff --git a/test/Instrumentation/ThreadSanitizer/no_sanitize_thread.ll b/test/Instrumentation/ThreadSanitizer/no_sanitize_thread.ll
new file mode 100644
index 0000000000000..3949fd50a97dd
--- /dev/null
+++ b/test/Instrumentation/ThreadSanitizer/no_sanitize_thread.ll
@@ -0,0 +1,36 @@
+; RUN: opt < %s -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(i32* %a) {
+entry:
+  %tmp1 = load i32* %a, align 4
+  ret i32 %tmp1
+}
+
+; CHECK: define i32 @read_4_bytes(i32* %a) {
+; CHECK-NEXT: entry:
+; CHECK-NEXT:   %tmp1 = load i32* %a, align 4
+; CHECK: ret i32 %tmp1
+
+; no sanitize_thread attribute here
+define i32 @read_4_bytes_and_call(i32* %a) {
+entry:
+  call void @foo()
+  %tmp1 = load i32* %a, align 4
+  ret i32 %tmp1
+}
+
+; CHECK: define i32 @read_4_bytes_and_call(i32* %a) {
+; CHECK-NEXT: entry:
+; CHECK-NEXT:   %0 = call i8* @llvm.returnaddress(i32 0)
+; CHECK-NEXT:   call void @__tsan_func_entry(i8* %0)
+; CHECK-NEXT:   call void @foo()
+; CHECK-NEXT:   %tmp1 = load i32* %a, align 4
+; CHECK-NEXT:   call void @__tsan_func_exit()
+; CHECK-NEXT:   ret i32 %tmp1
+
+declare void @foo()
+