diff options
Diffstat (limited to 'contrib/llvm/lib/Analysis/CaptureTracking.cpp')
| -rw-r--r-- | contrib/llvm/lib/Analysis/CaptureTracking.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Analysis/CaptureTracking.cpp b/contrib/llvm/lib/Analysis/CaptureTracking.cpp index a729270..2118917 100644 --- a/contrib/llvm/lib/Analysis/CaptureTracking.cpp +++ b/contrib/llvm/lib/Analysis/CaptureTracking.cpp @@ -146,8 +146,14 @@ void llvm::PointerMayBeCaptured(const Value *V, CaptureTracker *Tracker) { case Instruction::PHI: case Instruction::Select: // The original value is not captured via this if the new value isn't. + Count = 0; for (Instruction::use_iterator UI = I->use_begin(), UE = I->use_end(); UI != UE; ++UI) { + // If there are lots of uses, conservatively say that the value + // is captured to avoid taking too much compile time. + if (Count++ >= Threshold) + return Tracker->tooManyUses(); + Use *U = &UI.getUse(); if (Visited.insert(U)) if (Tracker->shouldExplore(U)) |
