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llvm-project/clang/test/CodeGenObjCXX/block-nested-in-lambda.mm

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Fix the type of the capture passed to LambdaIntroducer::addCapture in RebuildLambdaScopeInfo Previously the type of the variable was being passed, which was causing clang to crash when a non-reference variable was captured by reference or a reference variable was captured by value by a lambda and a block nested inside the lambda body was referencing the variable. Original patch by JF Bastien. rdar://problem/47550338 Differential Revision: https://reviews.llvm.org/D58164
2020-03-05 10:35:07 +08:00
// RUN: %clang_cc1 -triple=x86_64-apple-darwin10 -emit-llvm -std=c++14 -fblocks -fobjc-arc -o - %s | FileCheck %s
[CodeGen] Look at the type of a block capture field rather than the type of the captured variable when determining whether the capture needs special handing when the block is copied or disposed. This fixes bugs in the handling of variables captured by a block that is nested inside a lambda that captures the variables by reference. rdar://problem/43540889 Differential Revision: https://reviews.llvm.org/D51025 llvm-svn: 340408
2018-08-22 21:41:19 +08:00
// CHECK: %[[STRUCT_BLOCK_DESCRIPTOR:.*]] = type { i64, i64 }
Fix the type of the capture passed to LambdaIntroducer::addCapture in RebuildLambdaScopeInfo Previously the type of the variable was being passed, which was causing clang to crash when a non-reference variable was captured by reference or a reference variable was captured by value by a lambda and a block nested inside the lambda body was referencing the variable. Original patch by JF Bastien. rdar://problem/47550338 Differential Revision: https://reviews.llvm.org/D58164
2020-03-05 10:35:07 +08:00
// CHECK: %[[S:.*]] = type { i32 }
// CHECK: %[[CLASS_ANON_2:.*]] = type { %[[S]]* }
// CHECK: %[[CLASS_ANON_3:.*]] = type { %[[S]] }
[CodeGen] Look at the type of a block capture field rather than the type of the captured variable when determining whether the capture needs special handing when the block is copied or disposed. This fixes bugs in the handling of variables captured by a block that is nested inside a lambda that captures the variables by reference. rdar://problem/43540889 Differential Revision: https://reviews.llvm.org/D51025 llvm-svn: 340408
2018-08-22 21:41:19 +08:00
// CHECK: %[[BLOCK_CAPTURED0:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i32*, i32* }>, <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i32*, i32* }>* %[[BLOCK:.*]], i32 0, i32 5
// CHECK: %[[V0:.*]] = getelementptr inbounds %[[LAMBDA_CLASS:.*]], %[[LAMBDA_CLASS]]* %[[THIS:.*]], i32 0, i32 0
// CHECK: %[[V1:.*]] = load i32*, i32** %[[V0]], align 8
// CHECK: store i32* %[[V1]], i32** %[[BLOCK_CAPTURED0]], align 8
// CHECK: %[[BLOCK_CAPTURED1:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i32*, i32* }>, <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i32*, i32* }>* %[[BLOCK]], i32 0, i32 6
// CHECK: %[[V2:.*]] = getelementptr inbounds %[[LAMBDA_CLASS]], %[[LAMBDA_CLASS]]* %[[THIS]], i32 0, i32 1
// CHECK: %[[V3:.*]] = load i32*, i32** %[[V2]], align 8
// CHECK: store i32* %[[V3]], i32** %[[BLOCK_CAPTURED1]], align 8
void foo1(int &, int &);
void block_in_lambda(int &s1, int &s2) {
auto lambda = [&s1, &s2]() {
auto block = ^{
foo1(s1, s2);
};
block();
};
lambda();
}
namespace CaptureByReference {
id getObj();
void use(id);
// Block copy/dispose helpers aren't needed because 'a' is captured by
// reference.
// CHECK-LABEL: define void @_ZN18CaptureByReference5test0Ev(
Fix the type of the capture passed to LambdaIntroducer::addCapture in RebuildLambdaScopeInfo Previously the type of the variable was being passed, which was causing clang to crash when a non-reference variable was captured by reference or a reference variable was captured by value by a lambda and a block nested inside the lambda body was referencing the variable. Original patch by JF Bastien. rdar://problem/47550338 Differential Revision: https://reviews.llvm.org/D58164
2020-03-05 10:35:07 +08:00
// CHECK-LABEL: define internal void @"_ZZN18CaptureByReference5test0EvENK3$_3clEv"(
[CodeGen] Look at the type of a block capture field rather than the type of the captured variable when determining whether the capture needs special handing when the block is copied or disposed. This fixes bugs in the handling of variables captured by a block that is nested inside a lambda that captures the variables by reference. rdar://problem/43540889 Differential Revision: https://reviews.llvm.org/D51025 llvm-svn: 340408
2018-08-22 21:41:19 +08:00
// CHECK: %[[BLOCK_DESCRIPTOR:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8** }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8** }>* %{{.*}}, i32 0, i32 4
[CodeGen] Replace '@' characters in block descriptors' symbol names with '\1'. '@' can't be used in block descriptors' symbol names since it is reserved on ELF platforms as a separator between symbol names and symbol versions. See the discussion here: https://reviews.llvm.org/D50783. Differential Revision: https://reviews.llvm.org/D54539 llvm-svn: 350157
2018-12-30 01:28:30 +08:00
// CHECK: store %[[STRUCT_BLOCK_DESCRIPTOR]]* bitcast ({ i64, i64, i8*, i64 }* @"__block_descriptor_40_e5_v8\01?0ls32l8" to %[[STRUCT_BLOCK_DESCRIPTOR]]*), %[[STRUCT_BLOCK_DESCRIPTOR]]** %[[BLOCK_DESCRIPTOR]], align 8
[CodeGen] Look at the type of a block capture field rather than the type of the captured variable when determining whether the capture needs special handing when the block is copied or disposed. This fixes bugs in the handling of variables captured by a block that is nested inside a lambda that captures the variables by reference. rdar://problem/43540889 Differential Revision: https://reviews.llvm.org/D51025 llvm-svn: 340408
2018-08-22 21:41:19 +08:00
void test0() {
id a = getObj();
[&]{ ^{ a = 0; }(); }();
}
// Block copy/dispose helpers shouldn't have to retain/release 'a' because it
// is captured by reference.
// CHECK-LABEL: define void @_ZN18CaptureByReference5test1Ev(
Fix the type of the capture passed to LambdaIntroducer::addCapture in RebuildLambdaScopeInfo Previously the type of the variable was being passed, which was causing clang to crash when a non-reference variable was captured by reference or a reference variable was captured by value by a lambda and a block nested inside the lambda body was referencing the variable. Original patch by JF Bastien. rdar://problem/47550338 Differential Revision: https://reviews.llvm.org/D58164
2020-03-05 10:35:07 +08:00
// CHECK-LABEL: define internal void @"_ZZN18CaptureByReference5test1EvENK3$_4clEv"(
[CodeGen] Look at the type of a block capture field rather than the type of the captured variable when determining whether the capture needs special handing when the block is copied or disposed. This fixes bugs in the handling of variables captured by a block that is nested inside a lambda that captures the variables by reference. rdar://problem/43540889 Differential Revision: https://reviews.llvm.org/D51025 llvm-svn: 340408
2018-08-22 21:41:19 +08:00
// CHECK: %[[BLOCK_DESCRIPTOR:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>* %{{.*}}, i32 0, i32 4
[CodeGen] Replace '@' characters in block descriptors' symbol names with '\1'. '@' can't be used in block descriptors' symbol names since it is reserved on ELF platforms as a separator between symbol names and symbol versions. See the discussion here: https://reviews.llvm.org/D50783. Differential Revision: https://reviews.llvm.org/D54539 llvm-svn: 350157
2018-12-30 01:28:30 +08:00
// CHECK: store %[[STRUCT_BLOCK_DESCRIPTOR]]* bitcast ({ i64, i64, i8*, i8*, i8*, i64 }* @"__block_descriptor_56_8_32s40s_e5_v8\01?0l" to %[[STRUCT_BLOCK_DESCRIPTOR]]*), %[[STRUCT_BLOCK_DESCRIPTOR]]** %[[BLOCK_DESCRIPTOR]], align 8
[CodeGen] Look at the type of a block capture field rather than the type of the captured variable when determining whether the capture needs special handing when the block is copied or disposed. This fixes bugs in the handling of variables captured by a block that is nested inside a lambda that captures the variables by reference. rdar://problem/43540889 Differential Revision: https://reviews.llvm.org/D51025 llvm-svn: 340408
2018-08-22 21:41:19 +08:00
Fix the type of the capture passed to LambdaIntroducer::addCapture in RebuildLambdaScopeInfo Previously the type of the variable was being passed, which was causing clang to crash when a non-reference variable was captured by reference or a reference variable was captured by value by a lambda and a block nested inside the lambda body was referencing the variable. Original patch by JF Bastien. rdar://problem/47550338 Differential Revision: https://reviews.llvm.org/D58164
2020-03-05 10:35:07 +08:00
void test1() {
id a = getObj(), b = getObj(), c = getObj();
[&a, b, c]{ ^{ a = 0; use(b); use(c); }(); }();
}
struct S {
int val() const;
int a;
S();
S(const S&);
S &operator=(const S&);
S(S&&);
S &operator=(S&&);
};
S getS();
// CHECK: define internal i32 @"_ZZN18CaptureByReference5test2EvENK3$_1clIiEEDaT_"(%[[CLASS_ANON_2]]* %{{.*}}, i32 %{{.*}})
// CHECK: %[[BLOCK:.*]] = alloca <{ i8*, i32, i32, i8*, %{{.*}}, %[[S]]* }>, align 8
// CHECK: %[[BLOCK_CAPTURED:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %{{.*}}, %[[S]]* }>, <{ i8*, i32, i32, i8*, %{{.*}}, %[[S]]* }>* %[[BLOCK]], i32 0, i32 5
// CHECK: %[[V0:.*]] = getelementptr inbounds %[[CLASS_ANON_2]], %[[CLASS_ANON_2]]* %{{.*}}, i32 0, i32 0
// CHECK: %[[V1:.*]] = load %[[S]]*, %[[S]]** %[[V0]], align 8
// CHECK: store %[[S]]* %[[V1]], %[[S]]** %[[BLOCK_CAPTURED]], align 8
int test2() {
S s;
auto fn = [&](const auto a){
return ^{
return s.val();
}();
};
return fn(123);
}
// CHECK: define internal i32 @"_ZZN18CaptureByReference5test3EvENK3$_2clIiEEDaT_"(%[[CLASS_ANON_3]]* %{{.*}}, i32 %{{.*}})
// CHECK: %[[BLOCK:.*]] = alloca <{ i8*, i32, i32, i8*, %{{.*}}*, %[[S]] }>, align 8
// CHECK: %[[BLOCK_CAPTURED:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %{{.*}}*, %[[S]] }>, <{ i8*, i32, i32, i8*, %{{.*}}*, %[[S]] }>* %[[BLOCK]], i32 0, i32 5
// CHECK: %[[V0:.*]] = getelementptr inbounds %[[CLASS_ANON_3]], %[[CLASS_ANON_3]]* %{{.*}}, i32 0, i32 0
// CHECK: call void @_ZN18CaptureByReference1SC1ERKS0_(%[[S]]* %[[BLOCK_CAPTURED]], %[[S]]* {{.*}} %[[V0]])
int test3() {
const S &s = getS();
auto fn = [=](const auto a){
return ^{
return s.val();
}();
};
return fn(123);
}
[CodeGen] Look at the type of a block capture field rather than the type of the captured variable when determining whether the capture needs special handing when the block is copied or disposed. This fixes bugs in the handling of variables captured by a block that is nested inside a lambda that captures the variables by reference. rdar://problem/43540889 Differential Revision: https://reviews.llvm.org/D51025 llvm-svn: 340408
2018-08-22 21:41:19 +08:00
// CHECK-LABEL: define linkonce_odr hidden void @__copy_helper_block_8_32s40s(
Generate objc intrinsics instead of runtime calls as the ARC optimizer now works only on intrinsics Differential Revision: https://reviews.llvm.org/D55802 Reviewers: rjmccall llvm-svn: 349535
2018-12-19 04:33:00 +08:00
// CHECK-NOT: call void @llvm.objc.storeStrong(
[CodeGen] Look at the type of a block capture field rather than the type of the captured variable when determining whether the capture needs special handing when the block is copied or disposed. This fixes bugs in the handling of variables captured by a block that is nested inside a lambda that captures the variables by reference. rdar://problem/43540889 Differential Revision: https://reviews.llvm.org/D51025 llvm-svn: 340408
2018-08-22 21:41:19 +08:00
// CHECK: %[[V4:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>* %{{.*}}, i32 0, i32 5
// CHECK: %[[V5:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>* %{{.*}}, i32 0, i32 5
// CHECK: %[[BLOCKCOPY_SRC:.*]] = load i8*, i8** %[[V4]], align 8
// CHECK: store i8* null, i8** %[[V5]], align 8
Generate objc intrinsics instead of runtime calls as the ARC optimizer now works only on intrinsics Differential Revision: https://reviews.llvm.org/D55802 Reviewers: rjmccall llvm-svn: 349535
2018-12-19 04:33:00 +08:00
// CHECK: call void @llvm.objc.storeStrong(i8** %[[V5]], i8* %[[BLOCKCOPY_SRC]])
[CodeGen] Look at the type of a block capture field rather than the type of the captured variable when determining whether the capture needs special handing when the block is copied or disposed. This fixes bugs in the handling of variables captured by a block that is nested inside a lambda that captures the variables by reference. rdar://problem/43540889 Differential Revision: https://reviews.llvm.org/D51025 llvm-svn: 340408
2018-08-22 21:41:19 +08:00
// CHECK: %[[V6:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>* %{{.*}}, i32 0, i32 6
// CHECK: %[[V7:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>* %{{.*}}, i32 0, i32 6
// CHECK: %[[BLOCKCOPY_SRC2:.*]] = load i8*, i8** %[[V6]], align 8
// CHECK: store i8* null, i8** %[[V7]], align 8
Generate objc intrinsics instead of runtime calls as the ARC optimizer now works only on intrinsics Differential Revision: https://reviews.llvm.org/D55802 Reviewers: rjmccall llvm-svn: 349535
2018-12-19 04:33:00 +08:00
// CHECK: call void @llvm.objc.storeStrong(i8** %[[V7]], i8* %[[BLOCKCOPY_SRC2]])
// CHECK-NOT: call void @llvm.objc.storeStrong(
[CodeGen] Look at the type of a block capture field rather than the type of the captured variable when determining whether the capture needs special handing when the block is copied or disposed. This fixes bugs in the handling of variables captured by a block that is nested inside a lambda that captures the variables by reference. rdar://problem/43540889 Differential Revision: https://reviews.llvm.org/D51025 llvm-svn: 340408
2018-08-22 21:41:19 +08:00
// CHECK: ret void
// CHECK-LABEL: define linkonce_odr hidden void @__destroy_helper_block_8_32s40s(
// CHECK: %[[V2:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>* %{{.*}}, i32 0, i32 5
// CHECK: %[[V3:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8*, i8*, i8** }>* %{{.*}}, i32 0, i32 6
Generate objc intrinsics instead of runtime calls as the ARC optimizer now works only on intrinsics Differential Revision: https://reviews.llvm.org/D55802 Reviewers: rjmccall llvm-svn: 349535
2018-12-19 04:33:00 +08:00
// CHECK-NOT: call void @llvm.objc.storeStrong(
// CHECK: call void @llvm.objc.storeStrong(i8** %[[V3]], i8* null)
// CHECK: call void @llvm.objc.storeStrong(i8** %[[V2]], i8* null)
// CHECK-NOT: call void @llvm.objc.storeStrong(
[CodeGen] Look at the type of a block capture field rather than the type of the captured variable when determining whether the capture needs special handing when the block is copied or disposed. This fixes bugs in the handling of variables captured by a block that is nested inside a lambda that captures the variables by reference. rdar://problem/43540889 Differential Revision: https://reviews.llvm.org/D51025 llvm-svn: 340408
2018-08-22 21:41:19 +08:00
// CHECK: ret void
}