Files
clang-p2996/clang/test/CodeGenObjCXX/lambda-expressions.mm
Rafael Espindola 5179a4ea28 Use private linkage for globals we already name with \01L and \01l.
In llvm the only semantic difference between internal and private is that llvm
tries to hide private globals my mangling them with a private prefix. Since
the globals changed by this patch already had the magic don't mangle marker,
there should be no change in the generated assembly.

A followup patch should then be able to drop the \01L and \01l prefixes and let
llvm mangle as appropriate.

llvm-svn: 202419
2014-02-27 19:01:11 +00:00

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3.2 KiB
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// RUN: %clang_cc1 -triple x86_64-apple-darwin10.0.0 -emit-llvm -o - %s -fexceptions -std=c++11 -fblocks -fobjc-arc | FileCheck -check-prefix=ARC %s
// RUN: %clang_cc1 -triple x86_64-apple-darwin10.0.0 -emit-llvm -o - %s -fexceptions -std=c++11 -fblocks | FileCheck -check-prefix=MRC %s
typedef int (^fp)();
fp f() { auto x = []{ return 3; }; return x; }
// MRC: @"\01L_OBJC_METH_VAR_NAME{{.*}}" = private global [5 x i8] c"copy\00"
// MRC: @"\01L_OBJC_METH_VAR_NAME{{.*}}" = private global [12 x i8] c"autorelease\00"
// MRC-LABEL: define i32 ()* @_Z1fv(
// MRC-LABEL: define internal i32 ()* @"_ZZ1fvENK3$_0cvU13block_pointerFivEEv"
// MRC: store i8* bitcast (i8** @_NSConcreteStackBlock to i8*)
// MRC: store i8* bitcast (i32 (i8*)* @"___ZZ1fvENK3$_0cvU13block_pointerFivEEv_block_invoke" to i8*)
// MRC: call i32 ()* (i8*, i8*)* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i32 ()* (i8*, i8*)*)
// MRC: call i32 ()* (i8*, i8*)* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i32 ()* (i8*, i8*)*)
// MRC: ret i32 ()*
// ARC-LABEL: define i32 ()* @_Z1fv(
// ARC-LABEL: define internal i32 ()* @"_ZZ1fvENK3$_0cvU13block_pointerFivEEv"
// ARC: store i8* bitcast (i8** @_NSConcreteStackBlock to i8*)
// ARC: store i8* bitcast (i32 (i8*)* @"___ZZ1fvENK3$_0cvU13block_pointerFivEEv_block_invoke" to i8*)
// ARC: call i8* @objc_retainBlock
// ARC: call i8* @objc_autoreleaseReturnValue
typedef int (^fp)();
fp global;
void f2() { global = []{ return 3; }; }
// MRC: define void @_Z2f2v() [[NUW:#[0-9]+]] {
// MRC: store i8* bitcast (i32 (i8*)* @___Z2f2v_block_invoke to i8*),
// MRC-NOT: call
// MRC: ret void
// ("global" contains a dangling pointer after this function runs.)
// ARC: define void @_Z2f2v() [[NUW:#[0-9]+]] {
// ARC: store i8* bitcast (i32 (i8*)* @___Z2f2v_block_invoke to i8*),
// ARC: call i8* @objc_retainBlock
// ARC: call void @objc_release
// ARC-LABEL: define internal i32 @___Z2f2v_block_invoke
// ARC: call i32 @"_ZZ2f2vENK3$_1clEv
template <class T> void take_lambda(T &&lambda) { lambda(); }
void take_block(void (^block)()) { block(); }
// rdar://13800041
@interface A
- (void) test;
@end
@interface B : A @end
@implementation B
- (void) test {
take_block(^{
take_lambda([=]{
take_block(^{
take_lambda([=] {
[super test];
});
});
});
});
}
@end
// Check lines for BlockInLambda test below
// ARC-LABEL: define internal i32 @___ZZN13BlockInLambda1X1fEvENKUlvE_clEv_block_invoke
// ARC: [[Y:%.*]] = getelementptr inbounds %"struct.BlockInLambda::X"* {{.*}}, i32 0, i32 1
// ARC-NEXT: [[YVAL:%.*]] = load i32* [[Y]], align 4
// ARC-NEXT: ret i32 [[YVAL]]
typedef int (^fptr)();
template<typename T> struct StaticMembers {
static fptr f;
};
template<typename T>
fptr StaticMembers<T>::f = [] { auto f = []{return 5;}; return fptr(f); }();
template fptr StaticMembers<float>::f;
// ARC-LABEL: define linkonce_odr i32 ()* @_ZZNK13StaticMembersIfE1fMUlvE_clEvENKUlvE_cvU13block_pointerFivEEv
namespace BlockInLambda {
struct X {
int x,y;
void f() {
[this]{return ^{return y;}();}();
};
};
void g(X& x) {
x.f();
};
}
// ARC: attributes [[NUW]] = { nounwind{{.*}} }
// MRC: attributes [[NUW]] = { nounwind{{.*}} }