66c6bbe7ff
This change puts the functionality in commit
c5792aa90f behind a flag that is off by
default. The original commit is not in Apple's Clang fork (and blocks
are an Apple extension in the first place), and there is one known
issue that needs to be addressed before it can be enabled safely.
Differential Revision: https://reviews.llvm.org/D108243
29 lines
1.0 KiB
Objective-C
29 lines
1.0 KiB
Objective-C
// RUN: %clang_cc1 -fobjc-arc -fblocks -emit-llvm %s -o - | FileCheck -check-prefix=CHECK -check-prefix=CHECK-HEAP %s
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// RUN: %clang_cc1 -fobjc-arc -fblocks -fobjc-avoid-heapify-local-blocks -emit-llvm %s -o - | FileCheck -check-prefix=CHECK -check-prefix=CHECK-NOHEAP %s
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typedef void (^block_t)(void);
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void use_block(block_t);
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void use_int(int);
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// rdar://problem/10211676
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void test0(int i) {
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block_t block = ^{ use_int(i); };
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// CHECK-LABEL: define {{.*}}void @test0(
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// CHECK-HEAP: call {{.*}}i8* @llvm.objc.retainBlock(i8* {{%.*}}) [[NUW:#[0-9]+]], !clang.arc.copy_on_escape
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// CHECK-NOHEAP-NOT: @llvm.objc.retainBlock(
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// CHECK: ret void
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}
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void test1(int i) {
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id block = ^{ use_int(i); };
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// CHECK-LABEL: define {{.*}}void @test1(
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// CHECK-HEAP: call {{.*}}i8* @llvm.objc.retainBlock(i8* {{%.*}}) [[NUW]]
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// CHECK-NOHEAP: call {{.*}}i8* @llvm.objc.retainBlock(i8* {{%.*}}) [[NUW:#[0-9]+]]
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// CHECK-NOT: !clang.arc.copy_on_escape
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// CHECK: ret void
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}
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// CHECK: attributes [[NUW]] = { nounwind }
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