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Basic PassManager diagnostics.

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Added asserts whenever attempting to use a potentially
uninitialized pass. This helps people trying to develop a new pass and
people trying to understand the bug reports filed by the former people.

llvm-svn: 132520
This commit is contained in:
Andrew Trick 2011-06-03 00:48:58 +00:00
parent 335c4f8d8b
commit 39b3306530
1 changed files with 11 additions and 1 deletions
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12
lib/VMCore/PassManager.cpp
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@ -632,6 +632,7 @@ void PMTopLevelManager::schedulePass(Pass *P) {
Pass *AnalysisPass = findAnalysisPass(*I);
if (!AnalysisPass) {
const PassInfo *PI = PassRegistry::getPassRegistry()->getPassInfo(*I);
assert(PI && "Expected required passes to be initialized");
AnalysisPass = PI->createPass();
if (P->getPotentialPassManagerType () ==
AnalysisPass->getPotentialPassManagerType())
@ -686,6 +687,7 @@ Pass *PMTopLevelManager::findAnalysisPass(AnalysisID AID) {
// If Pass not found then check the interfaces implemented by Immutable Pass
const PassInfo *PassInf =
PassRegistry::getPassRegistry()->getPassInfo(PI);
assert(PassInf && "Expected all immutable passes to be initialized");
const std::vector<const PassInfo*> &ImmPI =
PassInf->getInterfacesImplemented();
for (std::vector<const PassInfo*>::const_iterator II = ImmPI.begin(),
@ -727,9 +729,11 @@ void PMTopLevelManager::dumpArguments() const {
for (SmallVector<ImmutablePass *, 8>::const_iterator I =
ImmutablePasses.begin(), E = ImmutablePasses.end(); I != E; ++I)
if (const PassInfo *PI =
PassRegistry::getPassRegistry()->getPassInfo((*I)->getPassID()))
PassRegistry::getPassRegistry()->getPassInfo((*I)->getPassID())) {
assert(PI && "Expected all immutable passes to be initialized");
if (!PI->isAnalysisGroup())
dbgs() << " -" << PI->getPassArgument();
}
for (SmallVector<PMDataManager *, 8>::const_iterator I = PassManagers.begin(),
E = PassManagers.end(); I != E; ++I)
(*I)->dumpPassArguments();
@ -1183,6 +1187,12 @@ void PMDataManager::dumpAnalysisUsage(StringRef Msg, const Pass *P,
for (unsigned i = 0; i != Set.size(); ++i) {
if (i) dbgs() << ',';
const PassInfo *PInf = PassRegistry::getPassRegistry()->getPassInfo(Set[i]);
if (!PInf) {
// Some preserved passes, such as AliasAnalysis, may not be initialized by
// all drivers.
dbgs() << " Uninitialized Pass";
continue;
}
dbgs() << ' ' << PInf->getPassName();
}
dbgs() << '\n';