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| author | Jay Foad <jay.foad@gmail.com> | 2011-03-30 11:19:20 +0000 |
|---|---|---|
| committer | Jay Foad <jay.foad@gmail.com> | 2011-03-30 11:19:20 +0000 |
| commit | e0938d8a87a6c8b12f68fbe784a270dd2d552331 (patch) | |
| tree | 98d4fbcf8ebe8ec03e205e22d98469b177234a95 /llvm/lib/Transforms/Scalar/JumpThreading.cpp | |
| parent | 27e20c3c586da61e5fe9218aa9fe5733e34c18c2 (diff) | |
| download | llvm-e0938d8a87a6c8b12f68fbe784a270dd2d552331.zip llvm-e0938d8a87a6c8b12f68fbe784a270dd2d552331.tar.gz llvm-e0938d8a87a6c8b12f68fbe784a270dd2d552331.tar.bz2 | |
(Almost) always call reserveOperandSpace() on newly created PHINodes.
llvm-svn: 128535
Diffstat (limited to 'llvm/lib/Transforms/Scalar/JumpThreading.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/JumpThreading.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/llvm/lib/Transforms/Scalar/JumpThreading.cpp b/llvm/lib/Transforms/Scalar/JumpThreading.cpp index 90094a8..a79b5b1 100644 --- a/llvm/lib/Transforms/Scalar/JumpThreading.cpp +++ b/llvm/lib/Transforms/Scalar/JumpThreading.cpp @@ -928,13 +928,14 @@ bool JumpThreading::SimplifyPartiallyRedundantLoad(LoadInst *LI) { array_pod_sort(AvailablePreds.begin(), AvailablePreds.end()); // Create a PHI node at the start of the block for the PRE'd load value. + pred_iterator PB = pred_begin(LoadBB), PE = pred_end(LoadBB); PHINode *PN = PHINode::Create(LI->getType(), "", LoadBB->begin()); + PN->reserveOperandSpace(std::distance(PB, PE)); PN->takeName(LI); // Insert new entries into the PHI for each predecessor. A single block may // have multiple entries here. - for (pred_iterator PI = pred_begin(LoadBB), E = pred_end(LoadBB); PI != E; - ++PI) { + for (pred_iterator PI = PB; PI != PE; ++PI) { BasicBlock *P = *PI; AvailablePredsTy::iterator I = std::lower_bound(AvailablePreds.begin(), AvailablePreds.end(), |