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