diff options
| 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 | d8b4fb4aab4d6fedb2b14bed1b846451b17bde7c (patch) | |
| tree | fb1299f91120b2d0bf513abc2ac6f42393fc627d /lib/Transforms/Scalar/JumpThreading.cpp | |
| parent | 8be7d8b43cef4fda9dec3ce05449e3d74c25fb04 (diff) | |
| download | llvm-d8b4fb4aab4d6fedb2b14bed1b846451b17bde7c.tar.gz llvm-d8b4fb4aab4d6fedb2b14bed1b846451b17bde7c.tar.bz2 llvm-d8b4fb4aab4d6fedb2b14bed1b846451b17bde7c.tar.xz | |
(Almost) always call reserveOperandSpace() on newly created PHINodes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128535 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Scalar/JumpThreading.cpp')
| -rw-r--r-- | lib/Transforms/Scalar/JumpThreading.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/Transforms/Scalar/JumpThreading.cpp b/lib/Transforms/Scalar/JumpThreading.cpp index 90094a8da2..a79b5b1938 100644 --- a/lib/Transforms/Scalar/JumpThreading.cpp +++ b/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(), |