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Perform fewer set insertions while calculating ANTIC_IN. This reduces the amount of time to optimize 403.gcc from 21.9s to 18.2s.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37707 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -818,20 +818,20 @@ void GVNPRE::buildsets_availout(BasicBlock::iterator I,
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availNumbers.resize(VN.size());
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if (isa<Instruction>(leftValue))
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if (!expNumbers.test(VN.lookup(leftValue)-1)) {
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if (!expNumbers.test(VN.lookup(leftValue))) {
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currExps.insert(leftValue);
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expNumbers.set(VN.lookup(leftValue)-1);
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expNumbers.set(VN.lookup(leftValue));
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}
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if (isa<Instruction>(rightValue))
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if (!expNumbers.test(VN.lookup(rightValue)-1)) {
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if (!expNumbers.test(VN.lookup(rightValue))) {
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currExps.insert(rightValue);
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expNumbers.set(VN.lookup(rightValue)-1);
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expNumbers.set(VN.lookup(rightValue));
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}
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if (!expNumbers.test(VN.lookup(BO)-1)) {
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if (!expNumbers.test(VN.lookup(BO))) {
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currExps.insert(BO);
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expNumbers.set(num-1);
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expNumbers.set(num);
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}
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// Handle cmp ops...
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@ -846,19 +846,19 @@ void GVNPRE::buildsets_availout(BasicBlock::iterator I,
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availNumbers.resize(VN.size());
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if (isa<Instruction>(leftValue))
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if (!expNumbers.test(VN.lookup(leftValue)-1)) {
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if (!expNumbers.test(VN.lookup(leftValue))) {
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currExps.insert(leftValue);
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expNumbers.set(VN.lookup(leftValue)-1);
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expNumbers.set(VN.lookup(leftValue));
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}
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if (isa<Instruction>(rightValue))
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if (!expNumbers.test(VN.lookup(rightValue)-1)) {
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if (!expNumbers.test(VN.lookup(rightValue))) {
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currExps.insert(rightValue);
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expNumbers.set(VN.lookup(rightValue)-1);
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expNumbers.set(VN.lookup(rightValue));
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}
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if (!expNumbers.test(VN.lookup(C)-1)) {
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if (!expNumbers.test(VN.lookup(C))) {
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currExps.insert(C);
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expNumbers.set(num-1);
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expNumbers.set(num);
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}
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// Handle unsupported ops
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@ -871,9 +871,9 @@ void GVNPRE::buildsets_availout(BasicBlock::iterator I,
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}
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if (!I->isTerminator())
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if (!availNumbers.test(VN.lookup(I)-1)) {
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if (!availNumbers.test(VN.lookup(I))) {
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currAvail.insert(I);
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availNumbers.set(VN.lookup(I)-1);
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availNumbers.set(VN.lookup(I));
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}
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}
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@ -921,45 +921,36 @@ unsigned GVNPRE::buildsets_anticin(BasicBlock* BB,
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SmallPtrSet<Value*, 32>& currTemps,
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std::set<BasicBlock*>& visited) {
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SmallPtrSet<Value*, 32>& anticIn = anticipatedIn[BB];
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SmallPtrSet<Value*, 32> old (anticIn.begin(), anticIn.end());
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unsigned old = anticIn.size();
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bool defer = buildsets_anticout(BB, anticOut, visited);
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if (defer)
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return 0;
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SmallPtrSet<Value*, 32> S;
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for (SmallPtrSet<Value*, 32>::iterator I = anticOut.begin(),
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E = anticOut.end(); I != E; ++I)
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if (currTemps.count(*I) == 0)
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S.insert(*I);
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anticIn.clear();
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for (SmallPtrSet<Value*, 32>::iterator I = currExps.begin(),
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E = currExps.end(); I != E; ++I)
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if (currTemps.count(*I) == 0)
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anticIn.insert(*I);
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BitVector numbers(VN.size());
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for (SmallPtrSet<Value*, 32>::iterator I = anticIn.begin(),
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E = anticIn.end(); I != E; ++I)
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numbers.set(VN.lookup(*I)-1);
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for (SmallPtrSet<Value*, 32>::iterator I = S.begin(), E = S.end();
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I != E; ++I) {
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// For non-opaque values, we should already have a value numbering.
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// However, for opaques, such as constants within PHI nodes, it is
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// possible that they have not yet received a number. Make sure they do
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// so now.
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if (!isa<BinaryOperator>(*I) && !isa<CmpInst>(*I))
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VN.lookup_or_add(*I);
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if (!numbers.test(VN.lookup(*I)-1))
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for (SmallPtrSet<Value*, 32>::iterator I = anticOut.begin(),
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E = anticOut.end(); I != E; ++I) {
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anticIn.insert(*I);
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numbers.set(VN.lookup_or_add(*I));
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}
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for (SmallPtrSet<Value*, 32>::iterator I = currExps.begin(),
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E = currExps.end(); I != E; ++I) {
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if (!numbers.test(VN.lookup_or_add(*I))) {
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anticIn.insert(*I);
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numbers.set(VN.lookup(*I));
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}
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}
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for (SmallPtrSet<Value*, 32>::iterator I = currTemps.begin(),
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E = currTemps.end(); I != E; ++I)
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anticIn.erase(*I);
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clean(anticIn);
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anticOut.clear();
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if (old.size() != anticIn.size())
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if (old != anticIn.size())
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return 2;
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else
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return 1;
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