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

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[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
// RUN: %clang_cc1 -triple=x86_64-apple-darwin10 -emit-llvm -std=c++11 -fblocks -fobjc-arc -o - %s | FileCheck %s
// CHECK: %[[STRUCT_BLOCK_DESCRIPTOR:.*]] = type { i64, i64 }
// 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(
// CHECK-LABEL: define internal void @"_ZZN18CaptureByReference5test0EvENK3$_1clEv"(
// CHECK: %[[BLOCK_DESCRIPTOR:.*]] = getelementptr inbounds <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8** }>, <{ i8*, i32, i32, i8*, %[[STRUCT_BLOCK_DESCRIPTOR]]*, i8** }>* %{{.*}}, i32 0, i32 4
[CodeGen] Replace '@' characters in block descriptors' symbol names with '\1'. '@' can't be used in block descriptors' symbol names since it is reserved on ELF platforms as a separator between symbol names and symbol versions. See the discussion here: https://reviews.llvm.org/D50783. Differential Revision: https://reviews.llvm.org/D54539 llvm-svn: 350157
2018-12-30 01:28:30 +08:00
// CHECK: store %[[STRUCT_BLOCK_DESCRIPTOR]]* bitcast ({ i64, i64, i8*, i64 }* @"__block_descriptor_40_e5_v8\01?0ls32l8" to %[[STRUCT_BLOCK_DESCRIPTOR]]*), %[[STRUCT_BLOCK_DESCRIPTOR]]** %[[BLOCK_DESCRIPTOR]], align 8
[CodeGen] Look at the type of a block capture field rather than the type of the captured variable when determining whether the capture needs special handing when the block is copied or disposed. This fixes bugs in the handling of variables captured by a block that is nested inside a lambda that captures the variables by reference. rdar://problem/43540889 Differential Revision: https://reviews.llvm.org/D51025 llvm-svn: 340408
2018-08-22 21:41:19 +08:00
void test0() {
id a = getObj();
[&]{ ^{ a = 0; }(); }();
}
// Block copy/dispose helpers shouldn't have to retain/release 'a' because it
// is captured by reference.
// CHECK-LABEL: define void @_ZN18CaptureByReference5test1Ev(
// CHECK-LABEL: define internal void @"_ZZN18CaptureByReference5test1EvENK3$_2clEv"(
// 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
// 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
void test1() {
id a = getObj(), b = getObj(), c = getObj();
[&a, b, c]{ ^{ a = 0; use(b); use(c); }(); }();
}
}