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https://github.com/Gericom/teak-llvm.git
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8e57b07f66
from those that aren't. This patch changes the way __block variables that aren't captured by escaping blocks are handled: - Since non-escaping blocks on the stack never get copied to the heap (see https://reviews.llvm.org/D49303), Sema shouldn't error out when the type of a non-escaping __block variable doesn't have an accessible copy constructor. - IRGen doesn't have to use the specialized byref structure (see https://clang.llvm.org/docs/Block-ABI-Apple.html#id8) for a non-escaping __block variable anymore. Instead IRGen can emit the variable as a normal variable and copy the reference to the block literal. Byref copy/dispose helpers aren't needed either. This reapplies r343518 after fixing a use-after-free bug in function Sema::ActOnBlockStmtExpr where the BlockScopeInfo was dereferenced after it was popped and deleted. rdar://problem/39352313 Differential Revision: https://reviews.llvm.org/D51564 llvm-svn: 343542
53 lines
1.5 KiB
Objective-C
53 lines
1.5 KiB
Objective-C
// RUN: %clang_cc1 %s -emit-llvm -o - -fobjc-gc -fblocks -triple i386-apple-darwin10 -fobjc-runtime=macosx-fragile-10.5 | FileCheck %s --check-prefix=CHECK --check-prefix=OBJC
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// RUN: %clang_cc1 -x objective-c++ %s -emit-llvm -o - -fobjc-gc -fblocks -triple i386-apple-darwin10 -fobjc-runtime=macosx-fragile-10.5 | FileCheck %s --check-prefix=CHECK --check-prefix=OBJCXX
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// OBJC-LABEL: define void @test1(
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// OBJCXX-LABEL: define void @_Z5test1P12NSDictionary(
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// CHECK-LABEL: define linkonce_odr hidden void @__copy_helper_block_
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// CHECK: call void @_Block_object_assign(
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// CHECK-LABEL: define linkonce_odr hidden void @__destroy_helper_block_
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// CHECK: call void @_Block_object_dispose(
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// OBJC-LABEL: define void @foo(
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// OBJCXX-LABEL: define void @_Z3foov(
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// CHECK: call i8* @objc_read_weak(
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// CHECK: call i8* @objc_assign_weak(
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// CHECK: call void @_Block_object_dispose(
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// OBJC-LABEL: define void @test2(
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// OBJCXX-LABEL: define void @_Z5test2v(
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// CHECK: call i8* @objc_assign_weak(
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// CHECK: call void @_Block_object_dispose(
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// CHECK-LABEL: define linkonce_odr hidden void @__copy_helper_block_
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// CHECK: call void @_Block_object_assign(
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// CHECK-LABEL: define linkonce_odr hidden void @__destroy_helper_block_
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// CHECK: call void @_Block_object_dispose(
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@interface NSDictionary @end
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void test1(NSDictionary * dict) {
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^{ (void)dict; }();
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}
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@interface D
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@end
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void foo() {
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__block __weak D *weakSelf;
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^{ (void)weakSelf; };
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D *l;
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l = weakSelf;
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weakSelf = l;
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}
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void (^__weak b)(void);
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void test2() {
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__block int i = 0;
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b = ^ { ++i; };
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}
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