Author: shafik Date: Tue Aug 27 13:17:35 2019 New Revision: 370107 URL: http://llvm.org/viewvc/llvm-project?rev=370107&view=rev Log: Debug Info: Support for DW_AT_export_symbols for anonymous structs
This implements the DWARF 5 feature described in: http://dwarfstd.org/ShowIssue.php?issue=141212.1 To support recognizing anonymous structs: struct A { struct { // Anonymous struct int y; }; } a; This patch adds support in CGDebugInfo::CreateLimitedType(...) for this new flag and an accompanying test to verify this feature. Differential Revision: https://reviews.llvm.org/D66667 Added: cfe/trunk/test/CodeGenCXX/debug-info-export_symbols.cpp Modified: cfe/trunk/lib/CodeGen/CGDebugInfo.cpp Modified: cfe/trunk/lib/CodeGen/CGDebugInfo.cpp URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGDebugInfo.cpp?rev=370107&r1=370106&r2=370107&view=diff ============================================================================== --- cfe/trunk/lib/CodeGen/CGDebugInfo.cpp (original) +++ cfe/trunk/lib/CodeGen/CGDebugInfo.cpp Tue Aug 27 13:17:35 2019 @@ -3121,7 +3121,8 @@ llvm::DICompositeType *CGDebugInfo::Crea SmallString<256> Identifier = getTypeIdentifier(Ty, CGM, TheCU); - // Explicitly record the calling convention for C++ records. + // Explicitly record the calling convention and export symbols for C++ + // records. auto Flags = llvm::DINode::FlagZero; if (auto CXXRD = dyn_cast<CXXRecordDecl>(RD)) { if (CGM.getCXXABI().getRecordArgABI(CXXRD) == CGCXXABI::RAA_Indirect) @@ -3132,6 +3133,10 @@ llvm::DICompositeType *CGDebugInfo::Crea // Record if a C++ record is non-trivial type. if (!CXXRD->isTrivial()) Flags |= llvm::DINode::FlagNonTrivial; + + // Record exports it symbols to the containing structure. + if (CXXRD->isAnonymousStructOrUnion()) + Flags |= llvm::DINode::FlagExportSymbols; } llvm::DICompositeType *RealDecl = DBuilder.createReplaceableCompositeType( Added: cfe/trunk/test/CodeGenCXX/debug-info-export_symbols.cpp URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenCXX/debug-info-export_symbols.cpp?rev=370107&view=auto ============================================================================== --- cfe/trunk/test/CodeGenCXX/debug-info-export_symbols.cpp (added) +++ cfe/trunk/test/CodeGenCXX/debug-info-export_symbols.cpp Tue Aug 27 13:17:35 2019 @@ -0,0 +1,11 @@ +// RUN: %clang_cc1 -emit-llvm -debug-info-kind=standalone -triple %itanium_abi_triple %s -o - | FileCheck %s + +// CHECK: [[SCOPE:![0-9]+]] = distinct !DICompositeType({{.*}}flags: DIFlagTypePassByValue +// CHECK: !DICompositeType(tag: DW_TAG_structure_type, scope: [[SCOPE]] +// CHECK-SAME: DIFlagExportSymbols | DIFlagTypePassByValue +struct A { + // Anonymous class exports its symbols into A + struct { + int y; + }; +} a; _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
