diff options
Diffstat (limited to 'lib/Transforms')
| -rw-r--r-- | lib/Transforms/Scalar/InstructionCombining.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp index 416e1f012a..218da9773d 100644 --- a/lib/Transforms/Scalar/InstructionCombining.cpp +++ b/lib/Transforms/Scalar/InstructionCombining.cpp @@ -8283,6 +8283,10 @@ static bool DeadPHICycle(PHINode *PN, // Remember this node, and if we find the cycle, return. if (!PotentiallyDeadPHIs.insert(PN)) return true; + + // Don't scan crazily complex things. + if (PotentiallyDeadPHIs.size() == 16) + return false; if (PHINode *PU = dyn_cast<PHINode>(PN->use_back())) return DeadPHICycle(PU, PotentiallyDeadPHIs); |