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35 lines
1.6 KiB
35 lines
1.6 KiB
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fblocks -fobjc-arc -fobjc-runtime-has-weak -std=c++11 -o - %s | FileCheck %s
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__attribute((objc_root_class)) @interface A @end
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@interface B : A @end
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// rdar://problem/23559789
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// Ensure that type differences don't cause an assert here.
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void test0(__weak B **src) {
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__weak A *dest = *src;
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}
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// CHECK-LABEL: define void @_Z5test0PU6__weakP1B(
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// CHECK: [[SRC:%.*]] = alloca [[B:%.*]]**, align 8
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// CHECK: [[DEST:%.*]] = alloca [[A:%.*]]*, align 8
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// CHECK: [[T0:%.*]] = load [[B]]**, [[B]]*** [[SRC]], align 8
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// CHECK-NEXT: [[T1:%.*]] = bitcast [[B]]** [[T0]] to [[A]]**
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// CHECK-NEXT: [[T2:%.*]] = bitcast [[A]]** [[DEST]] to i8**
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// CHECK-NEXT: [[T3:%.*]] = bitcast [[A]]** [[T1]] to i8**
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// CHECK-NEXT: call void @llvm.objc.copyWeak(i8** [[T2]], i8** [[T3]])
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// CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]** [[DEST]] to i8**
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// CHECK: call void @llvm.objc.destroyWeak(i8** [[T0]])
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void test1(__weak B **src) {
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__weak A *dest = static_cast<__weak B*&&>(*src);
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}
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// CHECK-LABEL: define void @_Z5test1PU6__weakP1B(
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// CHECK: [[SRC:%.*]] = alloca [[B:%.*]]**, align 8
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// CHECK: [[DEST:%.*]] = alloca [[A:%.*]]*, align 8
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// CHECK: [[T0:%.*]] = load [[B]]**, [[B]]*** [[SRC]], align 8
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// CHECK-NEXT: [[T1:%.*]] = bitcast [[B]]** [[T0]] to [[A]]**
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// CHECK-NEXT: [[T2:%.*]] = bitcast [[A]]** [[DEST]] to i8**
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// CHECK-NEXT: [[T3:%.*]] = bitcast [[A]]** [[T1]] to i8**
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// CHECK-NEXT: call void @llvm.objc.moveWeak(i8** [[T2]], i8** [[T3]])
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// CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]** [[DEST]] to i8**
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// CHECK: call void @llvm.objc.destroyWeak(i8** [[T0]])
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