From 6b25242a4ba80e8c3a8a2664eefeba9c69814012 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Thu, 16 Oct 2003 18:28:50 +0000 Subject: Add support for 'weak' linkage. For now, we translate linkonce into weak linkage in the bytecode format because we don't have enough bits to represent it. We will rev the bytecode version soon anyways, so this will be fixed in the near future. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9170 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Bytecode/Writer/Writer.cpp | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) (limited to 'lib/Bytecode/Writer/Writer.cpp') diff --git a/lib/Bytecode/Writer/Writer.cpp b/lib/Bytecode/Writer/Writer.cpp index 413fd293db..1e6d63a0f1 100644 --- a/lib/Bytecode/Writer/Writer.cpp +++ b/lib/Bytecode/Writer/Writer.cpp @@ -158,6 +158,17 @@ void BytecodeWriter::outputConstants(bool isFunction) { } } +static unsigned getEncodedLinkage(const GlobalValue *GV) { + switch (GV->getLinkage()) { + default: assert(0 && "Invalid linkage!"); + case GlobalValue::ExternalLinkage: return 0; + case GlobalValue::LinkOnceLinkage: return 1; + case GlobalValue::WeakLinkage: return 1; + case GlobalValue::AppendingLinkage: return 2; + case GlobalValue::InternalLinkage: return 3; + } +} + void BytecodeWriter::outputModuleInfoBlock(const Module *M) { BytecodeBlock ModuleInfoBlock(BytecodeFormat::ModuleGlobalInfo, Out); @@ -168,7 +179,7 @@ void BytecodeWriter::outputModuleInfoBlock(const Module *M) { // Fields: bit0 = isConstant, bit1 = hasInitializer, bit2,3=Linkage, // bit4+ = Slot # for type - unsigned oSlot = ((unsigned)Slot << 4) | ((unsigned)I->getLinkage() << 2) | + unsigned oSlot = ((unsigned)Slot << 4) | (getEncodedLinkage(I) << 2) | (I->hasInitializer() << 1) | I->isConstant(); output_vbr(oSlot, Out); @@ -195,7 +206,7 @@ void BytecodeWriter::outputModuleInfoBlock(const Module *M) { void BytecodeWriter::outputFunction(const Function *F) { BytecodeBlock FunctionBlock(BytecodeFormat::Function, Out); - output_vbr((unsigned)F->getLinkage(), Out); + output_vbr(getEncodedLinkage(F), Out); // Only output the constant pool and other goodies if needed... if (!F->isExternal()) { -- cgit v1.2.3-70-g09d2