--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/clang/test/CodeGenObjC/ns_consume_null_check.m	Thu Feb 13 15:10:13 2020 +0900
@@ -0,0 +1,85 @@
+// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fobjc-arc -fobjc-dispatch-method=mixed -fobjc-runtime-has-weak -fexceptions -o - %s | FileCheck %s
+
+@interface NSObject
+- (id) new;
+@end
+
+@interface MyObject : NSObject
+- (char)isEqual:(id) __attribute__((ns_consumed)) object;
+- (_Complex float) asComplexWithArg: (id) __attribute__((ns_consumed)) object;
+@end
+
+MyObject *x;
+
+// rdar://10444476
+void test0(void) {
+  id obj = [NSObject new];
+  [x isEqual : obj];
+}
+// CHECK-LABEL:     define void @test0()
+// CHECK:       [[FIVE:%.*]] = call i8* @llvm.objc.retain
+// CHECK-NEXT:  [[SIX:%.*]] = bitcast
+// CHECK-NEXT:  [[SEVEN:%.*]]  = icmp eq i8* [[SIX]], null
+// CHECK-NEXT:  br i1 [[SEVEN]], label [[NULLINIT:%.*]], label [[CALL_LABEL:%.*]]
+// CHECK:       [[FN:%.*]] = load i8*, i8** getelementptr inbounds
+// CHECK-NEXT:  [[EIGHT:%.*]] = bitcast i8* [[FN]]
+// CHECK-NEXT:  [[CALL:%.*]] = call signext i8 [[EIGHT]]
+// CHECK-NEXT:  br label [[CONT:%.*]]
+// CHECK:       call void @llvm.objc.release(i8* [[FIVE]]) [[NUW:#[0-9]+]]
+// CHECK-NEXT:  br label [[CONT]]
+// CHECK:       phi i8 [ [[CALL]], {{%.*}} ], [ 0, {{%.*}} ]
+
+// Ensure that we build PHIs correctly in the presence of cleanups.
+// rdar://12046763
+void test1(void) {
+  id obj = [NSObject new];
+  __weak id weakObj = obj;
+  _Complex float result = [x asComplexWithArg: obj];
+}
+// CHECK-LABEL:    define void @test1()
+// CHECK:      [[OBJ:%.*]] = alloca i8*, align 8
+// CHECK-NEXT: [[WEAKOBJ:%.*]] = alloca i8*, align 8
+// CHECK-NEXT: [[RESULT:%.*]] = alloca { float, float }, align 4
+//   Various initializations.
+// CHECK:      [[T0:%.*]] = call i8* bitcast (
+// CHECK-NEXT: store i8* [[T0]], i8** [[OBJ]]
+// CHECK-NEXT: [[T0:%.*]] = load i8*, i8** [[OBJ]]
+// CHECK-NEXT: call i8* @llvm.objc.initWeak(i8** [[WEAKOBJ]], i8* [[T0]]) [[NUW]]
+//   Okay, start the message-send.
+// CHECK-NEXT: [[T0:%.*]] = load [[MYOBJECT:%.*]]*, [[MYOBJECT:%.*]]** @x
+// CHECK-NEXT: [[ARG:%.*]] = load i8*, i8** [[OBJ]]
+// CHECK-NEXT: [[ARG_RETAINED:%.*]] = call i8* @llvm.objc.retain(i8* [[ARG]])
+// CHECK-NEXT: load i8*, i8** @
+// CHECK-NEXT: [[SELF:%.*]] = bitcast [[MYOBJECT]]* [[T0]] to i8*
+//   Null check.
+// CHECK-NEXT: [[T0:%.*]] = icmp eq i8* [[SELF]], null
+// CHECK-NEXT: br i1 [[T0]], label [[FORNULL:%.*]], label [[FORCALL:%.*]]
+//   Invoke and produce the return values.
+// CHECK:      [[CALL:%.*]] = invoke <2 x float> bitcast
+// CHECK-NEXT:   to label [[INVOKE_CONT:%.*]] unwind label {{%.*}}
+// CHECK:      [[T0:%.*]] = bitcast { float, float }* [[COERCE:%.*]] to <2 x float>*
+// CHECK-NEXT: store <2 x float> [[CALL]], <2 x float>* [[T0]],
+// CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds { float, float }, { float, float }* [[COERCE]], i32 0, i32 0
+// CHECK-NEXT: [[REALCALL:%.*]] = load float, float* [[T0]]
+// CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds { float, float }, { float, float }* [[COERCE]], i32 0, i32 1
+// CHECK-NEXT: [[IMAGCALL:%.*]] = load float, float* [[T0]]
+// CHECK-NEXT: br label [[CONT:%.*]]{{$}}
+//   Null path.
+// CHECK:      call void @llvm.objc.release(i8* [[ARG_RETAINED]]) [[NUW]]
+// CHECK-NEXT: br label [[CONT]]
+//   Join point.
+// CHECK:      [[REAL:%.*]] = phi float [ [[REALCALL]], [[INVOKE_CONT]] ], [ 0.000000e+00, [[FORNULL]] ]
+// CHECK-NEXT: [[IMAG:%.*]] = phi float [ [[IMAGCALL]], [[INVOKE_CONT]] ], [ 0.000000e+00, [[FORNULL]] ]
+// CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds { float, float }, { float, float }* [[RESULT]], i32 0, i32 0
+// CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds { float, float }, { float, float }* [[RESULT]], i32 0, i32 1
+// CHECK-NEXT: store float [[REAL]], float* [[T0]]
+// CHECK-NEXT: store float [[IMAG]], float* [[T1]]
+//   Epilogue.
+// CHECK-NEXT: call void @llvm.objc.destroyWeak(i8** [[WEAKOBJ]]) [[NUW]]
+// CHECK-NEXT: call void @llvm.objc.storeStrong(i8** [[OBJ]], i8* null) [[NUW]]
+// CHECK-NEXT: ret void
+//   Cleanup.
+// CHECK:      landingpad
+// CHECK:      call void @llvm.objc.destroyWeak(i8** [[WEAKOBJ]]) [[NUW]]
+
+// CHECK: attributes [[NUW]] = { nounwind }