diff options
Diffstat (limited to 'llvm/lib/VMCore/PassManager.cpp')
| -rw-r--r-- | llvm/lib/VMCore/PassManager.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/VMCore/PassManager.cpp b/llvm/lib/VMCore/PassManager.cpp index e7d7c5bc728..b0afaef1317 100644 --- a/llvm/lib/VMCore/PassManager.cpp +++ b/llvm/lib/VMCore/PassManager.cpp @@ -426,6 +426,12 @@ void PMTopLevelManager::schedulePass(Pass *P) { // Give pass a chance to prepare the stage. P->preparePassManager(activeStack); + // If P is an analysis pass and it is available then do not + // generate the analysis again. Stale analysis info should not be + // available at this point. + if (P->isAnalysis() && findAnalysisPass(P->getPassInfo())) + return; + AnalysisUsage AnUsage; P->getAnalysisUsage(AnUsage); const std::vector<AnalysisID> &RequiredSet = AnUsage.getRequiredSet(); |
