1; RUN: opt < %s -tsan -S | FileCheck %s 2 3target 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" 4target triple = "x86_64-unknown-linux-gnu" 5 6; no sanitize_thread attribute here 7define i32 @read_4_bytes(i32* %a) { 8entry: 9 %tmp1 = load i32, i32* %a, align 4 10 ret i32 %tmp1 11} 12 13; CHECK: define i32 @read_4_bytes(i32* %a) { 14; CHECK-NEXT: entry: 15; CHECK-NEXT: %tmp1 = load i32, i32* %a, align 4 16; CHECK: ret i32 %tmp1 17 18; no sanitize_thread attribute here 19define i32 @read_4_bytes_and_call(i32* %a) { 20entry: 21 call void @foo() 22 %tmp1 = load i32, i32* %a, align 4 23 ret i32 %tmp1 24} 25 26; CHECK: define i32 @read_4_bytes_and_call(i32* %a) { 27; CHECK-NEXT: entry: 28; CHECK-NEXT: %0 = call i8* @llvm.returnaddress(i32 0) 29; CHECK-NEXT: call void @__tsan_func_entry(i8* %0) 30; CHECK-NEXT: call void @foo() 31; CHECK-NEXT: %tmp1 = load i32, i32* %a, align 4 32; CHECK-NEXT: call void @__tsan_func_exit() 33; CHECK-NEXT: ret i32 %tmp1 34 35declare void @foo() nounwind 36 37