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Map operands of all function-local metadata, not just metadata passed to llvm.dbg.declare intrinsics 

llvm-svn: 93979
This commit is contained in:
Victor Hernandez 2010-01-20 05:49:59 +00:00
parent 20425abea4
commit 5fa88d4e30
1 changed files with 13 additions and 19 deletions
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32
llvm/lib/Transforms/Utils/ValueMapper.cpp
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@ -29,11 +29,21 @@ Value *llvm::MapValue(const Value *V, ValueMapTy &VM) {
// NOTE: VMSlot can be invalidated by any reference to VM, which can grow the
// DenseMap. This includes any recursive calls to MapValue.
// Global values and metadata do not need to be seeded into the ValueMap if
// they are using the identity mapping.
if (isa<GlobalValue>(V) || isa<InlineAsm>(V) || isa<MetadataBase>(V))
// Global values and non-function-local metadata do not need to be seeded into
// the ValueMap if they are using the identity mapping.
if (isa<GlobalValue>(V) || isa<InlineAsm>(V) || isa<MDString>(V) ||
(isa<MDNode>(V) && !dyn_cast<MDNode>(V)->isFunctionLocal()))
return VMSlot = const_cast<Value*>(V);
if (isa<MDNode>(V)) {
const MDNode *MD = dyn_cast<MDNode>(V);
std::vector<Value*> Elts;
Elts.reserve(MD->getNumOperands());
for (unsigned i = 0; i != MD->getNumOperands(); i++)
Elts.push_back(MapValue(MD->getOperand(i), VM));
return VM[V] = MDNode::get(V->getContext(), Elts.data(), Elts.size());
}
Constant *C = const_cast<Constant*>(dyn_cast<Constant>(V));
if (C == 0) return 0;
@ -131,21 +141,5 @@ void llvm::RemapInstruction(Instruction *I, ValueMapTy &ValueMap) {
assert(V && "Referenced value not in value map!");
*op = V;
}
// Map llvm.dbg.declare instruction's first operand, which points to
// alloca instruction through MDNode. Since MDNodes are not counted as normal
// uses, this will fall through cracks otherwise.
const DbgDeclareInst *DDI = dyn_cast<DbgDeclareInst>(I);
if (!DDI) return;
Value *AddrInsn = DDI->getAddress();
if (!AddrInsn) return;
ValueMapTy::iterator VMI = ValueMap.find(AddrInsn);
if (VMI == ValueMap.end()) return;
Value *Elts[] = { VMI->second };
MDNode *NewAddr = MDNode::get(AddrInsn->getContext(), Elts, 1);
I->setOperand(1, NewAddr);
}