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      1 // 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
      2 // RUN: %clang_cc1 -triple x86_64-apple-darwin10.0.0 -emit-llvm -o - %s -fexceptions -std=c++11 -fblocks | FileCheck -check-prefix=MRC %s
      3 
      4 typedef int (^fp)();
      5 fp f() { auto x = []{ return 3; }; return x; }
      6 
      7 // MRC: @OBJC_METH_VAR_NAME{{.*}} = private global [5 x i8] c"copy\00"
      8 // MRC: @OBJC_METH_VAR_NAME{{.*}} = private global [12 x i8] c"autorelease\00"
      9 // MRC-LABEL: define i32 ()* @_Z1fv(
     10 // MRC-LABEL: define internal i32 ()* @"_ZZ1fvENK3$_0cvU13block_pointerFivEEv"
     11 // MRC: store i8* bitcast (i8** @_NSConcreteStackBlock to i8*)
     12 // MRC: store i8* bitcast (i32 (i8*)* @"___ZZ1fvENK3$_0cvU13block_pointerFivEEv_block_invoke" to i8*)
     13 // MRC: call i32 ()* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i32 ()* (i8*, i8*)*)
     14 // MRC: call i32 ()* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i32 ()* (i8*, i8*)*)
     15 // MRC: ret i32 ()*
     16 
     17 // ARC-LABEL: define i32 ()* @_Z1fv(
     18 // ARC-LABEL: define internal i32 ()* @"_ZZ1fvENK3$_0cvU13block_pointerFivEEv"
     19 // ARC: store i8* bitcast (i8** @_NSConcreteStackBlock to i8*)
     20 // ARC: store i8* bitcast (i32 (i8*)* @"___ZZ1fvENK3$_0cvU13block_pointerFivEEv_block_invoke" to i8*)
     21 // ARC: call i8* @objc_retainBlock
     22 // ARC: call i8* @objc_autoreleaseReturnValue
     23 
     24 typedef int (^fp)();
     25 fp global;
     26 void f2() { global = []{ return 3; }; }
     27 
     28 // MRC: define void @_Z2f2v() [[NUW:#[0-9]+]] {
     29 // MRC: store i8* bitcast (i32 (i8*)* @___Z2f2v_block_invoke to i8*),
     30 // MRC-NOT: call
     31 // MRC: ret void
     32 // ("global" contains a dangling pointer after this function runs.)
     33 
     34 // ARC: define void @_Z2f2v() [[NUW:#[0-9]+]] {
     35 // ARC: store i8* bitcast (i32 (i8*)* @___Z2f2v_block_invoke to i8*),
     36 // ARC: call i8* @objc_retainBlock
     37 // ARC: call void @objc_release
     38 // ARC-LABEL: define internal i32 @___Z2f2v_block_invoke
     39 // ARC: call i32 @"_ZZ2f2vENK3$_1clEv
     40 
     41 template <class T> void take_lambda(T &&lambda) { lambda(); }
     42 void take_block(void (^block)()) { block(); }
     43 
     44 // rdar://13800041
     45 @interface A
     46 - (void) test;
     47 @end
     48 @interface B : A @end
     49 @implementation B
     50 - (void) test {
     51   take_block(^{
     52       take_lambda([=]{
     53           take_block(^{
     54               take_lambda([=] {
     55                   [super test];
     56               });
     57           });
     58       });
     59    });
     60 }
     61 @end
     62 
     63 // ARC-LABEL: define linkonce_odr i32 ()* @_ZZNK13StaticMembersIfE1fMUlvE_clEvENKUlvE_cvU13block_pointerFivEEv
     64 
     65 // Check lines for BlockInLambda test below
     66 // ARC-LABEL: define internal i32 @___ZZN13BlockInLambda1X1fEvENKUlvE_clEv_block_invoke
     67 // ARC: [[Y:%.*]] = getelementptr inbounds %"struct.BlockInLambda::X", %"struct.BlockInLambda::X"* {{.*}}, i32 0, i32 1
     68 // ARC-NEXT: [[YVAL:%.*]] = load i32, i32* [[Y]], align 4
     69 // ARC-NEXT: ret i32 [[YVAL]]
     70 
     71 typedef int (^fptr)();
     72 template<typename T> struct StaticMembers {
     73   static fptr f;
     74 };
     75 template<typename T>
     76 fptr StaticMembers<T>::f = [] { auto f = []{return 5;}; return fptr(f); }();
     77 template fptr StaticMembers<float>::f;
     78 
     79 namespace BlockInLambda {
     80   struct X {
     81     int x,y;
     82     void f() {
     83       [this]{return ^{return y;}();}();
     84     };
     85   };
     86   void g(X& x) {
     87     x.f();
     88   };
     89 }
     90 
     91 
     92 // ARC: attributes [[NUW]] = { nounwind{{.*}} }
     93 // MRC: attributes [[NUW]] = { nounwind{{.*}} }
     94