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Speed Up Pass Manager.

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- Check Immutableness before searching PreservedSet.
- Avoid unnecessary traversal while setting Last User.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35028 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2007-03-08 19:05:01 +00:00
parent a47f60bfaf
commit d46825c6a1
1 changed files with 16 additions and 15 deletions
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31
lib/VMCore/PassManager.cpp
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@ -353,6 +353,10 @@ void PMTopLevelManager::setLastUser(std::vector<Pass *> &AnalysisPasses,
E = AnalysisPasses.end(); I != E; ++I) {
Pass *AP = *I;
LastUser[AP] = P;
if (P == AP)
continue;
// If AP is the last user of other passes then make P last user of
// such passes.
for (std::map<Pass *, Pass *>::iterator LUI = LastUser.begin(),
@ -546,11 +550,10 @@ bool PMDataManager::preserveHigherLevelAnalysis(Pass *P) {
for (std::vector<Pass *>::iterator I = HigherLevelAnalysis.begin(),
E = HigherLevelAnalysis.end(); I != E; ++I) {
Pass *P1 = *I;
if (std::find(PreservedSet.begin(), PreservedSet.end(), P1->getPassInfo()) ==
PreservedSet.end()) {
if (!dynamic_cast<ImmutablePass*>(P1))
return false;
}
if (!dynamic_cast<ImmutablePass*>(P1)
&& std::find(PreservedSet.begin(), PreservedSet.end(), P1->getPassInfo()) ==
PreservedSet.end())
return false;
}
return true;
@ -568,12 +571,11 @@ void PMDataManager::removeNotPreservedAnalysis(Pass *P) {
for (std::map<AnalysisID, Pass*>::iterator I = AvailableAnalysis.begin(),
E = AvailableAnalysis.end(); I != E; ) {
std::map<AnalysisID, Pass*>::iterator Info = I++;
if (std::find(PreservedSet.begin(), PreservedSet.end(), Info->first) ==
PreservedSet.end()) {
if (!dynamic_cast<ImmutablePass*>(Info->second)
&& std::find(PreservedSet.begin(), PreservedSet.end(), Info->first) ==
PreservedSet.end())
// Remove this analysis
if (!dynamic_cast<ImmutablePass*>(Info->second))
AvailableAnalysis.erase(Info);
}
AvailableAnalysis.erase(Info);
}
// Check inherited analysis also. If P is not preserving analysis
@ -587,12 +589,11 @@ void PMDataManager::removeNotPreservedAnalysis(Pass *P) {
I = InheritedAnalysis[Index]->begin(),
E = InheritedAnalysis[Index]->end(); I != E; ) {
std::map<AnalysisID, Pass *>::iterator Info = I++;
if (std::find(PreservedSet.begin(), PreservedSet.end(), Info->first) ==
PreservedSet.end()) {
if (!dynamic_cast<ImmutablePass*>(Info->second)
&& std::find(PreservedSet.begin(), PreservedSet.end(), Info->first) ==
PreservedSet.end())
// Remove this analysis
if (!dynamic_cast<ImmutablePass*>(Info->second))
InheritedAnalysis[Index]->erase(Info);
}
InheritedAnalysis[Index]->erase(Info);
}
}