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DI: Use a DenseMap instead of named metadata, NFC

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Remove a strange round-trip through named metadata to assign preserved
local variables to their subprograms.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219798 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith
2014-10-15 16:11:41 +00:00
parent b510f8d08c
commit 5c2d60d357
4 changed files with 8 additions and 57 deletions
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13
lib/IR/DIBuilder.cpp
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@ -73,13 +73,10 @@ void DIBuilder::finalize() {
DIType(TempSubprograms).replaceAllUsesWith(SPs);
for (unsigned i = 0, e = SPs.getNumElements(); i != e; ++i) {
DISubprogram SP(SPs.getElement(i));
SmallVector<Value *, 4> Variables;
if (NamedMDNode *NMD = getFnSpecificMDNode(M, SP)) {
for (unsigned ii = 0, ee = NMD->getNumOperands(); ii != ee; ++ii)
Variables.push_back(NMD->getOperand(ii));
NMD->eraseFromParent();
}
if (MDNode *Temp = SP.getVariablesNodes()) {
SmallVector<Value *, 4> Variables;
for (Value *V : PreservedVariables.lookup(SP))
Variables.push_back(V);
DIArray AV = getOrCreateArray(Variables);
DIType(Temp).replaceAllUsesWith(AV);
}
@ -906,8 +903,8 @@ DIVariable DIBuilder::createLocalVariable(unsigned Tag, DIDescriptor Scope,
// to preserve variable info in such situation then stash it in a
// named mdnode.
DISubprogram Fn(getDISubprogram(Scope));
NamedMDNode *FnLocals = getOrInsertFnSpecificMDNode(M, Fn);
FnLocals->addOperand(Node);
assert(Fn && "Missing subprogram for local variable");
PreservedVariables[Fn].push_back(Node);
}
DIVariable RetVar(Node);
assert(RetVar.isVariable() &&