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Put add operands in ScalarEvolution-canonical order, when convenient.

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This isn't necessary, because ScalarEvolution sorts them anyway,
but it's tidier this way.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111132 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2010-08-16 15:39:27 +00:00
parent aadb5f5adb
commit 4065f60912
1 changed files with 2 additions and 2 deletions
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4
lib/Transforms/Scalar/LoopStrengthReduce.cpp
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@ -1601,7 +1601,7 @@ ICmpInst *LSRInstance::OptimizeMax(ICmpInst *Cond, IVStrideUse* &CondUse) {
const SCEV *One = SE.getConstant(BackedgeTakenCount->getType(), 1);
// Add one to the backedge-taken count to get the trip count.
const SCEV *IterationCount = SE.getAddExpr(BackedgeTakenCount, One);
const SCEV *IterationCount = SE.getAddExpr(One, BackedgeTakenCount);
if (IterationCount != SE.getSCEV(Sel)) return Cond;
// Check for a max calculation that matches the pattern. There's no check
@ -2400,7 +2400,7 @@ void LSRInstance::GenerateConstantOffsets(LSRUse &LU, unsigned LUIdx,
if (isLegalUse(F.AM, LU.MinOffset - *I, LU.MaxOffset - *I,
LU.Kind, LU.AccessTy, TLI)) {
// Add the offset to the base register.
const SCEV *NewG = SE.getAddExpr(G, SE.getConstant(G->getType(), *I));
const SCEV *NewG = SE.getAddExpr(SE.getConstant(G->getType(), *I), G);
// If it cancelled out, drop the base register, otherwise update it.
if (NewG->isZero()) {
std::swap(F.BaseRegs[i], F.BaseRegs.back());