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cache dereferenced iterators

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108131 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Gabor Greif
2010-07-12 10:36:48 +00:00
parent 3472766f9e
commit a8b9df7bd9
3 changed files with 12 additions and 9 deletions
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7
lib/Transforms/Scalar/TailRecursionElimination.cpp
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@ -476,10 +476,11 @@ bool TailCallElim::ProcessReturningBlock(ReturnInst *Ret, BasicBlock *&OldEntry,
// it will not show up as a predecessor.
for (pred_iterator PI = pred_begin(OldEntry), PE = pred_end(OldEntry);
PI != PE; ++PI) {
if (*PI == &F->getEntryBlock())
AccPN->addIncoming(AccumulatorRecursionEliminationInitVal, *PI);
BasicBlock *P = *PI;
if (P == &F->getEntryBlock())
AccPN->addIncoming(AccumulatorRecursionEliminationInitVal, P);
else
AccPN->addIncoming(AccPN, *PI);
AccPN->addIncoming(AccPN, P);
}
// Add an incoming argument for the current block, which is computed by our