37 lines
901 B
Plaintext
37 lines
901 B
Plaintext
// RUN: %clang_cc1 -emit-llvm -o - -fblocks %s -O1 -fno-inline-functions -triple x86_64-apple-darwin10.0.0 -fobjc-runtime=macosx-fragile-10.5 | FileCheck %s
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// PR10835 / <rdar://problem/10050178>
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struct X {
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X();
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X(const X&);
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~X();
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};
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@interface NRVO
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@end
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@implementation NRVO
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// CHECK: define internal void @"\01-[NRVO getNRVO]"
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- (X)getNRVO {
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X x;
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// CHECK: call void @_ZN1XC1Ev
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// CHECK-NEXT: ret void
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return x;
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}
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@end
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X blocksNRVO() {
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return ^{
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// With the optimizer enabled, the DeadArgElim pass is able to
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// mark the block litteral address argument as unused and later the
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// related block_litteral global variable is removed.
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// This allows to promote this call to a fastcc call.
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// CHECK-LABEL: define internal fastcc void @___Z10blocksNRVOv_block_invoke
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X x;
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// CHECK: call void @_ZN1XC1Ev
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// CHECK-NEXT: ret void
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return x;
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}() ;
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}
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