From ee5feafc0f467102cd12e8be82b54cc23158beb1 Mon Sep 17 00:00:00 2001 From: Adrian Prantl Date: Wed, 15 Jul 2015 17:01:41 +0000 Subject: Debug Info: Add basic support for external types references. This is a necessary prerequisite for bootstrapping the emission of debug info inside modules. - Adds a FlagExternalTypeRef to DICompositeType. External types must have a unique identifier. - External type references are emitted using a forward declaration with a DW_AT_signature([DW_FORM_ref_sig8]) based on the UID. http://reviews.llvm.org/D9612 llvm-svn: 242302 --- llvm/lib/IR/DIBuilder.cpp | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'llvm/lib/IR/DIBuilder.cpp') diff --git a/llvm/lib/IR/DIBuilder.cpp b/llvm/lib/IR/DIBuilder.cpp index 2a90e70..28a8d56 100644 --- a/llvm/lib/IR/DIBuilder.cpp +++ b/llvm/lib/IR/DIBuilder.cpp @@ -435,6 +435,18 @@ DISubroutineType *DIBuilder::createSubroutineType(DIFile *File, return DISubroutineType::get(VMContext, Flags, ParameterTypes); } +DICompositeType *DIBuilder::createExternalTypeRef(unsigned Tag, DIFile *File, + StringRef UniqueIdentifier) { + assert(!UniqueIdentifier.empty() && "external type ref without uid"); + auto *CTy = + DICompositeType::get(VMContext, Tag, "", nullptr, 0, nullptr, nullptr, 0, + 0, 0, DINode::FlagExternalTypeRef, nullptr, 0, + nullptr, nullptr, UniqueIdentifier); + // Types with unique IDs need to be in the type map. + retainType(CTy); + return CTy; +} + DICompositeType *DIBuilder::createEnumerationType( DIScope *Scope, StringRef Name, DIFile *File, unsigned LineNumber, uint64_t SizeInBits, uint64_t AlignInBits, DINodeArray Elements, -- cgit v1.1