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 6define i32 @read_4_bytes(i32* %a) sanitize_thread { 7entry: 8 %tmp1 = load i32, i32* %a, align 4 9 ret i32 %tmp1 10} 11 12; CHECK: @llvm.global_ctors = {{.*}}@tsan.module_ctor 13 14; CHECK: define i32 @read_4_bytes(i32* %a) 15; CHECK: call void @__tsan_func_entry(i8* %0) 16; CHECK-NEXT: %1 = bitcast i32* %a to i8* 17; CHECK-NEXT: call void @__tsan_read4(i8* %1) 18; CHECK-NEXT: %tmp1 = load i32, i32* %a, align 4 19; CHECK-NEXT: call void @__tsan_func_exit() 20; CHECK: ret i32 21 22 23declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i1) 24declare void @llvm.memmove.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i1) 25declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i1) 26 27 28; Check that tsan converts mem intrinsics back to function calls. 29 30define void @MemCpyTest(i8* nocapture %x, i8* nocapture %y) sanitize_thread { 31entry: 32 tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %x, i8* align 4 %y, i64 16, i1 false) 33 ret void 34; CHECK: define void @MemCpyTest 35; CHECK: call i8* @memcpy 36; CHECK: ret void 37} 38 39define void @MemMoveTest(i8* nocapture %x, i8* nocapture %y) sanitize_thread { 40entry: 41 tail call void @llvm.memmove.p0i8.p0i8.i64(i8* align 4 %x, i8* align 4 %y, i64 16, i1 false) 42 ret void 43; CHECK: define void @MemMoveTest 44; CHECK: call i8* @memmove 45; CHECK: ret void 46} 47 48define void @MemSetTest(i8* nocapture %x) sanitize_thread { 49entry: 50 tail call void @llvm.memset.p0i8.i64(i8* align 4 %x, i8 77, i64 16, i1 false) 51 ret void 52; CHECK: define void @MemSetTest 53; CHECK: call i8* @memset 54; CHECK: ret void 55} 56 57; CHECK-LABEL: @SwiftError 58; CHECK-NOT: __tsan_read 59; CHECK-NOT: __tsan_write 60; CHECK: ret 61define void @SwiftError(i8** swifterror) sanitize_thread { 62 %swifterror_ptr_value = load i8*, i8** %0 63 store i8* null, i8** %0 64 %swifterror_addr = alloca swifterror i8* 65 %swifterror_ptr_value_2 = load i8*, i8** %swifterror_addr 66 store i8* null, i8** %swifterror_addr 67 ret void 68} 69 70; CHECK-LABEL: @SwiftErrorCall 71; CHECK-NOT: __tsan_read 72; CHECK-NOT: __tsan_write 73; CHECK: ret 74define void @SwiftErrorCall(i8** swifterror) sanitize_thread { 75 %swifterror_addr = alloca swifterror i8* 76 store i8* null, i8** %0 77 call void @SwiftError(i8** %0) 78 ret void 79} 80 81; CHECK: define internal void @tsan.module_ctor() 82; CHECK: call void @__tsan_init() 83