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88 lines
3.1 KiB
Plaintext
88 lines
3.1 KiB
Plaintext
// RUN: %clang_cc1 -std=c++11 -triple x86_64-apple-darwin10 -emit-llvm -fobjc-runtime-has-weak -fblocks -fobjc-arc -O2 -disable-llvm-passes -o - %s | FileCheck %s
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@interface A
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@end
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id getObject();
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void callee();
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// Lifetime extension for binding a reference to an rvalue
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// CHECK-LABEL: define{{.*}} void @_Z5test0v()
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void test0() {
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// CHECK: call noundef ptr @_Z9getObjectv{{.*}} [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
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// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use(
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const __strong id &ref1 = getObject();
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// CHECK: call void @_Z6calleev
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callee();
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// CHECK: call noundef ptr @_Z9getObjectv{{.*}} [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
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// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use(
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// CHECK-NEXT: call ptr @llvm.objc.autorelease
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const __autoreleasing id &ref2 = getObject();
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// CHECK: call void @_Z6calleev
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callee();
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// CHECK: call void @llvm.objc.release
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// CHECK: ret
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}
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// No lifetime extension when we're binding a reference to an lvalue.
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// CHECK-LABEL: define{{.*}} void @_Z5test1RU8__strongP11objc_objectRU6__weakS0_
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void test1(__strong id &x, __weak id &y) {
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// CHECK-NOT: release
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const __strong id &ref1 = x;
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const __autoreleasing id &ref2 = x;
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const __weak id &ref3 = y;
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// CHECK: ret void
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}
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typedef __strong id strong_id;
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//CHECK: define{{.*}} void @_Z5test3v
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void test3() {
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// CHECK: [[REF:%.*]] = alloca ptr, align 8
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// CHECK: call ptr @llvm.objc.initWeak
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// CHECK-NEXT: store ptr
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const __weak id &ref = strong_id();
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// CHECK-NEXT: call void @_Z6calleev()
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callee();
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// CHECK-NEXT: call void @llvm.objc.destroyWeak
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// CHECK-NEXT: call void @llvm.lifetime.end.p0(ptr [[REF]])
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// CHECK-NEXT: ret void
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}
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// CHECK-LABEL: define{{.*}} void @_Z5test4RU8__strongP11objc_object
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void test4(__strong id &x) {
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// CHECK: call ptr @llvm.objc.retain
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__strong A* const &ar = x;
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// CHECK: store i32 17, ptr
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int i = 17;
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// CHECK: call void @llvm.objc.release(
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// CHECK: ret void
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}
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void sink(__strong A* &&);
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// CHECK-LABEL: define{{.*}} void @_Z5test5RU8__strongP11objc_object
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void test5(__strong id &x) {
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// CHECK: [[REFTMP:%.*]] = alloca ptr, align 8
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// CHECK: [[I:%.*]] = alloca i32, align 4
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// CHECK: [[OBJ_ID:%.*]] = call ptr @llvm.objc.retain(
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// CHECK-NEXT: store ptr [[OBJ_ID]], ptr [[REFTMP:%[a-zA-Z0-9]+]]
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// CHECK-NEXT: call void @_Z4sinkOU8__strongP1A
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sink(x);
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// CHECK-NEXT: [[OBJ_A:%[a-zA-Z0-9]+]] = load ptr, ptr [[REFTMP]]
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// CHECK-NEXT: call void @llvm.objc.release
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// CHECK-NEXT: call void @llvm.lifetime.start.p0(ptr [[I]])
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// CHECK-NEXT: store i32 17, ptr
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int i = 17;
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// CHECK-NEXT: call void @llvm.lifetime.end.p0(ptr [[I]])
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// CHECK-NEXT: ret void
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}
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// CHECK-LABEL: define internal void @__cxx_global_var_init(
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// CHECK: call noundef ptr @_Z9getObjectv{{.*}} [ "clang.arc.attachedcall"(ptr @llvm.objc.retainAutoreleasedReturnValue) ]
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// CHECK-NEXT: call void (...) @llvm.objc.clang.arc.noop.use(
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const __strong id &global_ref = getObject();
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// Note: we intentionally don't release the object.
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