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Minor code simplification.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108793 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2010-07-20 00:57:18 +00:00
parent bf1ae5e254
commit fb272ad614
1 changed files with 3 additions and 6 deletions
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9
lib/Analysis/ScalarEvolutionNormalization.cpp
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@ -50,13 +50,10 @@ static bool IVUseShouldUsePostIncValue(Instruction *User, Instruction *IV,
// Look at all of the uses of IV by the PHI node. If any use corresponds to
// a block that is not dominated by the latch block, give up and use the
// preincremented value.
unsigned NumUses = 0;
for (unsigned i = 0, e = PN->getNumIncomingValues(); i != e; ++i)
if (PN->getIncomingValue(i) == IV) {
++NumUses;
if (!DT->dominates(LatchBlock, PN->getIncomingBlock(i)))
return false;
}
if (PN->getIncomingValue(i) == IV &&
!DT->dominates(LatchBlock, PN->getIncomingBlock(i)))
return false;
// Okay, all uses of IV by PN are in predecessor blocks that really are
// dominated by the latch block. Use the post-incremented value.