forked from OSchip/llvm-project
107 lines
2.7 KiB
C++
107 lines
2.7 KiB
C++
// RUN: %clang_cc1 %s -fblocks -triple x86_64-apple-darwin -emit-llvm -o - | FileCheck %s
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namespace test0 {
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// CHECK: define void @_ZN5test04testEi(
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// CHECK: define internal void @__test_block_invoke_{{.*}}(
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// CHECK: define internal void @__block_global_{{.*}}(
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void test(int x) {
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^{ ^{ (void) x; }; };
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}
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}
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extern void (^out)();
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namespace test1 {
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// Capturing const objects doesn't require a local block.
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// CHECK: define void @_ZN5test15test1Ev()
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// CHECK: store void ()* bitcast ({{.*}} @__block_literal_global{{.*}} to void ()*), void ()** @out
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void test1() {
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const int NumHorsemen = 4;
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out = ^{ (void) NumHorsemen; };
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}
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// That applies to structs too...
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// CHECK: define void @_ZN5test15test2Ev()
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// CHECK: store void ()* bitcast ({{.*}} @__block_literal_global{{.*}} to void ()*), void ()** @out
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struct loc { double x, y; };
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void test2() {
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const loc target = { 5, 6 };
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out = ^{ (void) target; };
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}
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// ...unless they have mutable fields...
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// CHECK: define void @_ZN5test15test3Ev()
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// CHECK: [[BLOCK:%.*]] = alloca [[BLOCK_T:%.*]],
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// CHECK: [[T0:%.*]] = bitcast [[BLOCK_T]]* [[BLOCK]] to void ()*
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// CHECK: store void ()* [[T0]], void ()** @out
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struct mut { mutable int x; };
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void test3() {
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const mut obj = { 5 };
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out = ^{ (void) obj; };
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}
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// ...or non-trivial destructors...
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// CHECK: define void @_ZN5test15test4Ev()
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// CHECK: [[OBJ:%.*]] = alloca
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// CHECK: [[BLOCK:%.*]] = alloca [[BLOCK_T:%.*]],
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// CHECK: [[T0:%.*]] = bitcast [[BLOCK_T]]* [[BLOCK]] to void ()*
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// CHECK: store void ()* [[T0]], void ()** @out
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struct scope { int x; ~scope(); };
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void test4() {
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const scope obj = { 5 };
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out = ^{ (void) obj; };
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}
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// ...or non-trivial copy constructors, but it's not clear how to do
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// that and still have a constant initializer in '03.
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}
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namespace test2 {
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struct A {
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A();
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A(const A &);
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~A();
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};
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struct B {
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B();
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B(const B &);
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~B();
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};
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// CHECK: define void @_ZN5test24testEv()
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void test() {
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__block A a;
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__block B b;
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}
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// CHECK: define internal void @__Block_byref_object_copy
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// CHECK: call void @_ZN5test21AC1ERKS0_(
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// CHECK: define internal void @__Block_byref_object_dispose
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// CHECK: call void @_ZN5test21AD1Ev(
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// CHECK: define internal void @__Block_byref_object_copy
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// CHECK: call void @_ZN5test21BC1ERKS0_(
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// CHECK: define internal void @__Block_byref_object_dispose
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// CHECK: call void @_ZN5test21BD1Ev(
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}
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// rdar://problem/9334739
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// Make sure we mark destructors for parameters captured in blocks.
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namespace test3 {
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struct A {
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A(const A&);
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~A();
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};
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struct B : A {
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};
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void test(B b) {
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extern void consume(void(^)());
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consume(^{ (void) b; });
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}
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}
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