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Reduce malloc/free traffic.

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llvm-svn: 35370
This commit is contained in:
Devang Patel 2007-03-26 23:19:29 +00:00
parent 58a8e74de6
commit c2708c8ccb
1 changed files with 8 additions and 12 deletions
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20
lib/Transforms/Utils/PromoteMemoryToRegister.cpp
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@ -77,7 +77,7 @@ namespace {
class VISIBILITY_HIDDEN RenamePassData {
public:
RenamePassData(BasicBlock *B, BasicBlock *P,
std::vector<Value *> V) : BB(B), Pred(P), Values(V) {}
const std::vector<Value *> &V) : BB(B), Pred(P), Values(V) {}
BasicBlock *BB;
BasicBlock *Pred;
std::vector<Value *> Values;
@ -123,7 +123,7 @@ namespace {
DenseMap<BasicBlock*, unsigned> BBNumbers;
/// RenamePassWorkList - Worklist used by RenamePass()
std::vector<RenamePassData *> RenamePassWorkList;
std::vector<RenamePassData> RenamePassWorkList;
public:
PromoteMem2Reg(const std::vector<AllocaInst*> &A,
@ -407,13 +407,12 @@ void PromoteMem2Reg::run() {
// and inserting the phi nodes we marked as necessary
//
RenamePassWorkList.clear();
RenamePassData *RPD = new RenamePassData(F.begin(), 0, Values);
RenamePassWorkList.push_back(RPD);
RenamePassWorkList.push_back(RenamePassData(F.begin(), 0, Values));
while(!RenamePassWorkList.empty()) {
RenamePassData *RPD = RenamePassWorkList.back(); RenamePassWorkList.pop_back();
RenamePassData RPD = RenamePassWorkList.back();
RenamePassWorkList.pop_back();
// RenamePass may add new worklist entries.
RenamePass(RPD->BB, RPD->Pred, RPD->Values);
delete RPD;
RenamePass(RPD.BB, RPD.Pred, RPD.Values);
}
// The renamer uses the Visited set to avoid infinite loops. Clear it now.
@ -794,11 +793,8 @@ void PromoteMem2Reg::RenamePass(BasicBlock *BB, BasicBlock *Pred,
// Recurse to our successors.
TerminatorInst *TI = BB->getTerminator();
for (unsigned i = 0; i != TI->getNumSuccessors(); i++) {
RenamePassData *RPD = new RenamePassData(TI->getSuccessor(i), BB,
IncomingVals);
RenamePassWorkList.push_back(RPD);
}
for (unsigned i = 0; i != TI->getNumSuccessors(); i++)
RenamePassWorkList.push_back(RenamePassData(TI->getSuccessor(i), BB, IncomingVals));
}
/// PromoteMemToReg - Promote the specified list of alloca instructions into