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2e00b98027
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. rdar://problem/39352313 Differential Revision: https://reviews.llvm.org/D51564 llvm-svn: 341754
18 lines
692 B
C
18 lines
692 B
C
// RUN: %clang_cc1 -fblocks -triple x86_64-apple-darwin10 -emit-llvm -o - %s | FileCheck %s
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// CHECK: [[Vi:%.+]] = alloca %struct.__block_byref_i, align 8
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// CHECK: call i32 (...) @rhs()
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// CHECK: [[V7:%.+]] = getelementptr inbounds %struct.__block_byref_i, %struct.__block_byref_i* [[Vi]], i32 0, i32 1
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// CHECK: load %struct.__block_byref_i*, %struct.__block_byref_i** [[V7]]
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// CHECK: call i32 (...) @rhs()
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// CHECK: [[V11:%.+]] = getelementptr inbounds %struct.__block_byref_i, %struct.__block_byref_i* [[Vi]], i32 0, i32 1
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// CHECK: load %struct.__block_byref_i*, %struct.__block_byref_i** [[V11]]
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int rhs();
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void foo() {
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__block int i;
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^{ (void)i; };
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i = rhs();
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i += rhs();
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}
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