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Use the SCEVAddRecExpr::getPostIncExpr utility function instead

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of doing the same thing manually.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102997 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2010-05-04 01:12:27 +00:00
parent c0ed0091dc
commit acd8cab843
1 changed files with 2 additions and 4 deletions
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6
lib/Analysis/ScalarEvolution.cpp
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@ -5049,15 +5049,13 @@ bool ScalarEvolution::isKnownPredicate(ICmpInst::Predicate Pred,
if (isLoopEntryGuardedByCond(
AR->getLoop(), Pred, AR->getStart(), RHS) &&
isLoopBackedgeGuardedByCond(
AR->getLoop(), Pred,
getAddExpr(AR, AR->getStepRecurrence(*this)), RHS))
AR->getLoop(), Pred, AR->getPostIncExpr(*this), RHS))
return true;
if (const SCEVAddRecExpr *AR = dyn_cast<SCEVAddRecExpr>(RHS))
if (isLoopEntryGuardedByCond(
AR->getLoop(), Pred, LHS, AR->getStart()) &&
isLoopBackedgeGuardedByCond(
AR->getLoop(), Pred,
LHS, getAddExpr(AR, AR->getStepRecurrence(*this))))
AR->getLoop(), Pred, LHS, AR->getPostIncExpr(*this)))
return true;
// Otherwise see what can be done with known constant ranges.