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llvm-project/clang/test/CodeGenObjC/arc-weak-property.m

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Change the driver's logic about Objective-C runtimes: abstract out a structure to hold inferred information, then propagate each invididual bit down to -cc1. Separate the bits of "supports weak" and "has a native ARC runtime"; make the latter a CodeGenOption. The tool chain is still driving this decision, because it's the place that has the required deployment target information on Darwin, but at least it's better-factored now. llvm-svn: 134453
2011-07-06 08:26:06 +08:00
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fobjc-nonfragile-abi -fobjc-runtime-has-weak -fblocks -fobjc-arc -o - %s | FileCheck %s
Automatic Reference Counting. Language-design credit goes to a lot of people, but I particularly want to single out Blaine Garst and Patrick Beard for their contributions. Compiler implementation credit goes to Argyrios, Doug, Fariborz, and myself, in no particular order. llvm-svn: 133103
2011-06-16 07:02:42 +08:00
// rdar://8899430
@interface WeakPropertyTest {
__weak id PROP;
}
@property () __weak id PROP;
@end
@implementation WeakPropertyTest
@synthesize PROP;
@end
// CHECK: define internal i8* @"\01-[WeakPropertyTest PROP]"
// CHECK: [[SELF:%.*]] = alloca [[WPT:%.*]]*,
// CHECK-NEXT: [[CMD:%.*]] = alloca i8*,
// CHECK-NEXT: store [[WPT]]* {{%.*}}, [[WPT]]** [[SELF]]
// CHECK-NEXT: store i8* {{%.*}}, i8** [[CMD]]
// CHECK-NEXT: [[T0:%.*]] = load [[WPT]]** [[SELF]]
// CHECK-NEXT: [[T1:%.*]] = load i64* @"OBJC_IVAR_$_WeakPropertyTest.PROP"
// CHECK-NEXT: [[T2:%.*]] = bitcast [[WPT]]* [[T0]] to i8*
// CHECK-NEXT: [[T3:%.*]] = getelementptr inbounds i8* [[T2]], i64 [[T1]]
// CHECK-NEXT: [[T4:%.*]] = bitcast i8* [[T3]] to i8**
// CHECK-NEXT: [[T5:%.*]] = call i8* @objc_loadWeakRetained(i8** [[T4]])
// CHECK-NEXT: [[T6:%.*]] = call i8* @objc_autoreleaseReturnValue(i8* [[T5]])
// CHECK-NEXT: ret i8* [[T6]]
// CHECK: define internal void @"\01-[WeakPropertyTest setPROP:]"
// CHECK: [[SELF:%.*]] = alloca [[WPT:%.*]]*,
// CHECK-NEXT: [[CMD:%.*]] = alloca i8*,
// CHECK-NEXT: [[PROP:%.*]] = alloca i8*,
// CHECK-NEXT: store [[WPT]]* {{%.*}}, [[WPT]]** [[SELF]]
// CHECK-NEXT: store i8* {{%.*}}, i8** [[CMD]]
// CHECK-NEXT: store i8* {{%.*}}, i8** [[PROP]]
// CHECK-NEXT: [[V:%.*]] = load i8** [[PROP]]
// CHECK-NEXT: [[T0:%.*]] = load [[WPT]]** [[SELF]]
// CHECK-NEXT: [[T1:%.*]] = load i64* @"OBJC_IVAR_$_WeakPropertyTest.PROP"
// CHECK-NEXT: [[T2:%.*]] = bitcast [[WPT]]* [[T0]] to i8*
// CHECK-NEXT: [[T3:%.*]] = getelementptr inbounds i8* [[T2]], i64 [[T1]]
// CHECK-NEXT: [[T4:%.*]] = bitcast i8* [[T3]] to i8**
// CHECK-NEXT: call i8* @objc_storeWeak(i8** [[T4]], i8* [[V]])
// CHECK-NEXT: ret void
// CHECK: define internal void @"\01-[WeakPropertyTest .cxx_destruct]"
// CHECK: [[SELF:%.*]] = alloca [[WPT:%.*]]*,
// CHECK-NEXT: [[CMD:%.*]] = alloca i8*,
// CHECK-NEXT: store [[WPT]]* {{%.*}}, [[WPT]]** [[SELF]]
// CHECK-NEXT: store i8* {{%.*}}, i8** [[CMD]]
// CHECK-NEXT: [[T0:%.*]] = load [[WPT]]** [[SELF]]
// CHECK-NEXT: [[T1:%.*]] = load i64* @"OBJC_IVAR_$_WeakPropertyTest.PROP"
// CHECK-NEXT: [[T2:%.*]] = bitcast [[WPT]]* [[T0]] to i8*
// CHECK-NEXT: [[T3:%.*]] = getelementptr inbounds i8* [[T2]], i64 [[T1]]
// CHECK-NEXT: [[T4:%.*]] = bitcast i8* [[T3]] to i8**
// CHECK-NEXT: call void @objc_destroyWeak(i8** [[T4]])
// CHECK-NEXT: ret void