From 4fe345729285ae634c657ab854057464d03220f7 Mon Sep 17 00:00:00 2001 From: Eric Christopher Date: Wed, 8 Feb 2012 00:22:26 +0000 Subject: Add support for a temporary forward decl type. We want this so we can rauw forward declarations if we decide to emit the full type. Part of rdar://10809898 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150024 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Analysis/DIBuilder.cpp | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'lib/Analysis') diff --git a/lib/Analysis/DIBuilder.cpp b/lib/Analysis/DIBuilder.cpp index 4560371..53a293a 100644 --- a/lib/Analysis/DIBuilder.cpp +++ b/lib/Analysis/DIBuilder.cpp @@ -669,6 +669,28 @@ DIType DIBuilder::createTemporaryType(DIFile F) { return DIType(Node); } +/// createForwardDecl - Create a temporary forward-declared type that +/// can be RAUW'd if the full type is seen. +DIType DIBuilder::createForwardDecl(unsigned Tag, StringRef Name, DIFile F, + unsigned Line) { + // Create a temporary MDNode. + Value *Elts[] = { + GetTagConstant(VMContext, Tag), + NULL, // TheCU + MDString::get(VMContext, Name), + F, + ConstantInt::get(Type::getInt32Ty(VMContext), Line), + // To ease transition include sizes etc of 0. + ConstantInt::get(Type::getInt32Ty(VMContext), 0), + ConstantInt::get(Type::getInt32Ty(VMContext), 0), + ConstantInt::get(Type::getInt32Ty(VMContext), 0), + ConstantInt::get(Type::getInt32Ty(VMContext), + DIDescriptor::FlagFwdDecl) + }; + MDNode *Node = MDNode::getTemporary(VMContext, Elts); + return DIType(Node); +} + /// getOrCreateArray - Get a DIArray, create one if required. DIArray DIBuilder::getOrCreateArray(ArrayRef Elements) { if (Elements.empty()) { -- cgit v1.1