diff options
Diffstat (limited to 'lib/Analysis/LiveVariables.cpp')
| -rw-r--r-- | lib/Analysis/LiveVariables.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/Analysis/LiveVariables.cpp b/lib/Analysis/LiveVariables.cpp index ff6607d51a..6e10ac1092 100644 --- a/lib/Analysis/LiveVariables.cpp +++ b/lib/Analysis/LiveVariables.cpp @@ -486,6 +486,11 @@ LiveVariables::computeLiveness(AnalysisDeclContext &AC, if (!cfg) return 0; + // The analysis currently has scalability issues for very large CFGs. + // Bail out if it looks too large. + if (cfg->getNumBlockIDs() > 300000) + return 0; + LiveVariablesImpl *LV = new LiveVariablesImpl(AC, killAtAssign); // Construct the dataflow worklist. Enqueue the exit block as the |