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Keep transitively-required passes alive for queries to work after the initial

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user pass is destroyed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12332 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Misha Brukman 2004-03-12 06:16:28 +00:00
parent bc1dbe95b8
commit 4230f40add
1 changed files with 10 additions and 1 deletions
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11
lib/VMCore/PassManagerT.h
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@ -208,7 +208,6 @@ public:
E = LastUseOf.end(); I != E; ++I)
LastUserOf[I->second].push_back(I->first);
// Output debug information...
if (Parent == 0) PMDebug::PerformPassStartupStuff(this);
@ -397,6 +396,16 @@ public:
if (I != CurrentAnalyses.end()) {
LastUseOf[I->second] = User; // Local pass, extend the lifetime
// Prolong live range of analyses that are needed after an analysis pass
// is destroyed, for querying by subsequent passes
AnalysisUsage AnUsage;
I->second->getAnalysisUsage(AnUsage);
const std::vector<AnalysisID> &IDs = AnUsage.getRequiredTransitiveSet();
for (std::vector<AnalysisID>::const_iterator i = IDs.begin(),
e = IDs.end(); i != e; ++i)
markPassUsed(*i, User);
} else {
// Pass not in current available set, must be a higher level pass
// available to us, propagate to parent pass manager... We tell the