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Remap metadata attached to instructions when remapping individual

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instructions, not when remapping modules.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112091 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2010-08-25 21:36:50 +00:00
parent 3e60a232c1
commit ce934260dc
5 changed files with 55 additions and 17 deletions
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20
lib/Linker/LinkModules.cpp
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@ -1005,13 +1005,31 @@ static bool LinkFunctionBody(Function *Dest, Function *Src,
// the Source function as operands. Loop through all of the operands of the
// functions and patch them up to point to the local versions...
//
// This is the same as RemapInstruction, except that it avoids remapping
// instruction and basic block operands.
//
for (Function::iterator BB = Dest->begin(), BE = Dest->end(); BB != BE; ++BB)
for (BasicBlock::iterator I = BB->begin(), E = BB->end(); I != E; ++I)
for (BasicBlock::iterator I = BB->begin(), E = BB->end(); I != E; ++I) {
// Remap operands.
for (Instruction::op_iterator OI = I->op_begin(), OE = I->op_end();
OI != OE; ++OI)
if (!isa<Instruction>(*OI) && !isa<BasicBlock>(*OI))
*OI = MapValue(*OI, ValueMap);
// Remap attached metadata.
SmallVector<std::pair<unsigned, MDNode *>, 4> MDs;
I->getAllMetadata(MDs);
for (SmallVectorImpl<std::pair<unsigned, MDNode *> >::iterator
MI = MDs.begin(), ME = MDs.end(); MI != ME; ++MI) {
Value *Old = MI->second;
if (!isa<Instruction>(Old) && !isa<BasicBlock>(Old)) {
Value *New = MapValue(Old, ValueMap);
if (New != Old)
I->setMetadata(MI->first, cast<MDNode>(New));
}
}
}
// There is no need to map the arguments anymore.
for (Function::arg_iterator I = Src->arg_begin(), E = Src->arg_end();
I != E; ++I)