| 1 | // 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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| 2 | |
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| 3 | __attribute((objc_root_class)) @interface A @end |
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| 4 | @interface B : A @end |
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| 5 | |
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| 6 | // rdar://problem/23559789 |
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| 7 | // Ensure that type differences don't cause an assert here. |
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| 8 | void test0(__weak B **src) { |
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| 9 | __weak A *dest = *src; |
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| 10 | } |
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| 11 | // CHECK-LABEL: define void @_Z5test0PU6__weakP1B( |
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| 12 | // CHECK: [[SRC:%.*]] = alloca [[B:%.*]]**, align 8 |
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| 13 | // CHECK: [[DEST:%.*]] = alloca [[A:%.*]]*, align 8 |
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| 14 | // CHECK: [[T0:%.*]] = load [[B]]**, [[B]]*** [[SRC]], align 8 |
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| 15 | // CHECK-NEXT: [[T1:%.*]] = bitcast [[B]]** [[T0]] to [[A]]** |
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| 16 | // CHECK-NEXT: [[T2:%.*]] = bitcast [[A]]** [[DEST]] to i8** |
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| 17 | // CHECK-NEXT: [[T3:%.*]] = bitcast [[A]]** [[T1]] to i8** |
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| 18 | // CHECK-NEXT: call void @llvm.objc.copyWeak(i8** [[T2]], i8** [[T3]]) |
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| 19 | // CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]** [[DEST]] to i8** |
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| 20 | // CHECK: call void @llvm.objc.destroyWeak(i8** [[T0]]) |
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| 21 | |
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| 22 | void test1(__weak B **src) { |
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| 23 | __weak A *dest = static_cast<__weak B*&&>(*src); |
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| 24 | } |
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| 25 | // CHECK-LABEL: define void @_Z5test1PU6__weakP1B( |
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| 26 | // CHECK: [[SRC:%.*]] = alloca [[B:%.*]]**, align 8 |
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| 27 | // CHECK: [[DEST:%.*]] = alloca [[A:%.*]]*, align 8 |
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| 28 | // CHECK: [[T0:%.*]] = load [[B]]**, [[B]]*** [[SRC]], align 8 |
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| 29 | // CHECK-NEXT: [[T1:%.*]] = bitcast [[B]]** [[T0]] to [[A]]** |
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| 30 | // CHECK-NEXT: [[T2:%.*]] = bitcast [[A]]** [[DEST]] to i8** |
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| 31 | // CHECK-NEXT: [[T3:%.*]] = bitcast [[A]]** [[T1]] to i8** |
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| 32 | // CHECK-NEXT: call void @llvm.objc.moveWeak(i8** [[T2]], i8** [[T3]]) |
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| 33 | // CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]** [[DEST]] to i8** |
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| 34 | // CHECK: call void @llvm.objc.destroyWeak(i8** [[T0]]) |
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| 35 | |
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