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Speculatively revert 109117 

llvm-svn: 109132
This commit is contained in:
Devang Patel 2010-07-22 18:44:00 +00:00
parent 49182ed65a
commit 5fa3813329
1 changed files with 6 additions and 27 deletions
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33
llvm/lib/Transforms/Utils/ValueMapper.cpp
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@ -14,7 +14,6 @@
#include "ValueMapper.h"
#include "llvm/Type.h"
#include "llvm/GlobalAlias.h"
#include "llvm/Constants.h"
#include "llvm/Function.h"
#include "llvm/Metadata.h"
@ -30,35 +29,15 @@ Value *llvm::MapValue(const Value *V, ValueToValueMapTy &VM) {
// Global values and non-function-local metadata do not need to be seeded into
// the VM if they are using the identity mapping.
if (isa<GlobalValue>(V) || isa<InlineAsm>(V) || isa<MDString>(V))
if (isa<GlobalValue>(V) || isa<InlineAsm>(V) || isa<MDString>(V) ||
(isa<MDNode>(V) && !cast<MDNode>(V)->isFunctionLocal()))
return VMSlot = const_cast<Value*>(V);
if (const MDNode *MD = dyn_cast<MDNode>(V)) {
Value *Dummy = new GlobalAlias(V->getType(), GlobalValue::ExternalLinkage);
VMSlot = Dummy;
for (unsigned i = 0, e = MD->getNumOperands(); i != e; ++i) {
Value *OP = MD->getOperand(i);
if (!OP) continue;
Value *MV = MapValue(OP, VM);
if (MV != OP) {
// This MDNode contain a reference to mapped value. Make a new
// MDNode and return it.
SmallVector<Value*, 4> Elts;
Elts.reserve(MD->getNumOperands());
for (unsigned j = 0; j != i; ++j)
Elts.push_back(MD->getOperand(j));
Elts.push_back(MV);
for (++i; i != e; ++i)
Elts.push_back(MD->getOperand(i) ?
MapValue(MD->getOperand(i), VM) : 0);
MDNode *NewMD = MDNode::get(V->getContext(), Elts.data(), Elts.size());
Dummy->uncheckedReplaceAllUsesWith(NewMD);
delete Dummy;
return VM[V] = NewMD;
}
}
delete Dummy;
return VM[V] = const_cast<Value*>(V);
SmallVector<Value*, 4> Elts;
for (unsigned i = 0, e = MD->getNumOperands(); i != e; ++i)
Elts.push_back(MD->getOperand(i) ? MapValue(MD->getOperand(i), VM) : 0);
return VM[V] = MDNode::get(V->getContext(), Elts.data(), Elts.size());
}
Constant *C = const_cast<Constant*>(dyn_cast<Constant>(V));