Imported Upstream version 5.18.0.246

Former-commit-id: 0c7ce5b1a7851e13f22acfd379b7f9fb304e4833

external/llvm/test/Instrumentation/ThreadSanitizer/tsan_basic.ll

@@ -0,0 +1,82 @@
+; 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"
+
+define i32 @read_4_bytes(i32* %a) sanitize_thread {
+entry:
+  %tmp1 = load i32, i32* %a, align 4
+  ret i32 %tmp1
+}
+
+; CHECK: @llvm.global_ctors = {{.*}}@tsan.module_ctor
+
+; CHECK: define i32 @read_4_bytes(i32* %a)
+; CHECK:        call void @__tsan_func_entry(i8* %0)
+; CHECK-NEXT:   %1 = bitcast i32* %a to i8*
+; CHECK-NEXT:   call void @__tsan_read4(i8* %1)
+; CHECK-NEXT:   %tmp1 = load i32, i32* %a, align 4
+; CHECK-NEXT:   call void @__tsan_func_exit()
+; CHECK: ret i32
+
+
+declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1)
+declare void @llvm.memmove.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1)
+declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1)
+
+
+; Check that tsan converts mem intrinsics back to function calls.
+
+define void @MemCpyTest(i8* nocapture %x, i8* nocapture %y) sanitize_thread {
+entry:
+    tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %x, i8* %y, i64 16, i32 4, i1 false)
+    ret void
+; CHECK: define void @MemCpyTest
+; CHECK: call i8* @memcpy
+; CHECK: ret void
+}
+
+define void @MemMoveTest(i8* nocapture %x, i8* nocapture %y) sanitize_thread {
+entry:
+    tail call void @llvm.memmove.p0i8.p0i8.i64(i8* %x, i8* %y, i64 16, i32 4, i1 false)
+    ret void
+; CHECK: define void @MemMoveTest
+; CHECK: call i8* @memmove
+; CHECK: ret void
+}
+
+define void @MemSetTest(i8* nocapture %x) sanitize_thread {
+entry:
+    tail call void @llvm.memset.p0i8.i64(i8* %x, i8 77, i64 16, i32 4, i1 false)
+    ret void
+; CHECK: define void @MemSetTest
+; CHECK: call i8* @memset
+; CHECK: ret void
+}
+
+; CHECK-LABEL: @SwiftError
+; CHECK-NOT: __tsan_read
+; CHECK-NOT: __tsan_write
+; CHECK: ret
+define void @SwiftError(i8** swifterror) sanitize_thread {
+  %swifterror_ptr_value = load i8*, i8** %0
+  store i8* null, i8** %0
+  %swifterror_addr = alloca swifterror i8*
+  %swifterror_ptr_value_2 = load i8*, i8** %swifterror_addr
+  store i8* null, i8** %swifterror_addr
+  ret void
+}
+
+; CHECK-LABEL: @SwiftErrorCall
+; CHECK-NOT: __tsan_read
+; CHECK-NOT: __tsan_write
+; CHECK: ret
+define void @SwiftErrorCall(i8** swifterror) sanitize_thread {
+  %swifterror_addr = alloca swifterror i8*
+  store i8* null, i8** %0
+  call void @SwiftError(i8** %0)
+  ret void
+}
+
+; CHECK: define internal void @tsan.module_ctor()
+; CHECK: call void @__tsan_init()