r296048 - NFC, Add a test that ensures that we don't emit helper code in copy/dispose

[Alex Lorenz via cfe-commits]

Author: arphaman
Date: Thu Feb 23 18:09:30 2017
New Revision: 296048

URL: http://llvm.org/viewvc/llvm-project?rev=296048&view=rev
Log:
NFC, Add a test that ensures that we don't emit helper code in copy/dispose
routines for objects that are captured with the __unsafe_unretained
ownership qualifier

This is a preparation commit that improves code-coverage in code that emits
block copy/dispose routines.

Modified:
    cfe/trunk/test/CodeGenObjC/arc-blocks.m

Modified: cfe/trunk/test/CodeGenObjC/arc-blocks.m
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenObjC/arc-blocks.m?rev=296048&r1=296047&r2=296048&view=diff
==============================================================================
--- cfe/trunk/test/CodeGenObjC/arc-blocks.m (original)
+++ cfe/trunk/test/CodeGenObjC/arc-blocks.m Thu Feb 23 18:09:30 2017
@@ -667,6 +667,41 @@ void test18(id x) {
 // CHECK-UNOPT-NEXT: ret void
 }
 
+// Ensure that we don't emit helper code in copy/dispose routines for variables
+// that are const-captured.
+void testUnsafeUnretainedLifetimeInCopyAndDestroyHelpers(id x, id y) {
+  id __unsafe_unretained unsafeObject = x;
+  (^ { testUnsafeUnretainedLifetimeInCopyAndDestroyHelpers(x, unsafeObject); })();
+}
+
+// CHECK-LABEL: testUnsafeUnretainedLifetimeInCopyAndDestroyHelpers_block_invoke
+// CHECK-UNOPT-LABEL: testUnsafeUnretainedLifetimeInCopyAndDestroyHelpers_block_invoke
+
+// CHECK-UNOPT: @__copy_helper_block
+// CHECK-UNOPT: alloca
+// CHECK-UNOPT-NEXT: alloca
+// CHECK-UNOPT-NEXT: store
+// CHECK-UNOPT-NEXT: store
+// CHECK-UNOPT-NEXT: load
+// CHECK-UNOPT-NEXT: bitcast
+// CHECK-UNOPT-NEXT: load
+// CHECK-UNOPT-NEXT: bitcast
+// CHECK-UNOPT-NEXT: getelementptr
+// CHECK-UNOPT-NEXT: getelementptr
+// CHECK-UNOPT-NEXT: load
+// CHECK-UNOPT-NEXT: store
+// CHECK-UNOPT-NEXT: call void @objc_storeStrong
+// CHECK-UNOPT-NEXT: ret
+
+// CHECK-UNOPT: @__destroy_helper_block
+// CHECK-UNOPT: alloca
+// CHECK-UNOPT-NEXT: store
+// CHECK-UNOPT-NEXT: load
+// CHECK-UNOPT-NEXT: bitcast
+// CHECK-UNOPT-NEXT: getelementptr
+// CHECK-UNOPT-NEXT: call void @objc_storeStrong
+// CHECK-UNOPT-NEXT: ret
+
 // rdar://13588325
 void test19_sink(void (^)(int));
 void test19(void (^b)(void)) {