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Adding some debug information to PassManager

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llvm-svn: 160446
This commit is contained in:
Victor Oliveira 2012-07-18 19:59:29 +00:00
parent 9d85bedde0
commit a012d565e9
1 changed files with 20 additions and 0 deletions
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20
lib/VMCore/PassManager.cpp
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@ -593,6 +593,26 @@ void PMTopLevelManager::schedulePass(Pass *P) {
Pass *AnalysisPass = findAnalysisPass(*I);
if (!AnalysisPass) {
const PassInfo *PI = PassRegistry::getPassRegistry()->getPassInfo(*I);
if (PI == NULL) {
// Pass P is not in the global PassRegistry
dbgs() << "Pass '" << P->getPassName() << "' is not initialized." << "\n";
dbgs() << "Verify if there is a pass dependency cycle." << "\n";
dbgs() << "Required Passes:" << "\n";
for (AnalysisUsage::VectorType::const_iterator I2 = RequiredSet.begin(),
E = RequiredSet.end(); I2 != E && I2 != I; ++I2) {
Pass *AnalysisPass2 = findAnalysisPass(*I2);
if (AnalysisPass2) {
dbgs() << "\t" << AnalysisPass2->getPassName() << "\n";
}
else {
dbgs() << "\t" << "Error: Required pass not found! Possible causes:" << "\n";
dbgs() << "\t\t" << "- Pass misconfiguration (e.g.: missing macros)" << "\n";
dbgs() << "\t\t" << "- Corruption of the global PassRegistry" << "\n";
}
}
}
assert(PI && "Expected required passes to be initialized");
AnalysisPass = PI->createPass();
if (P->getPotentialPassManagerType () ==