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[SCEVExpander] Clang format expressions; NFC

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The boolean expressions are somewhat hard to read otherwise.

llvm-svn: 268998
This commit is contained in:
Sanjoy Das 2016-05-10 00:32:31 +00:00
parent 5e39b474b8
commit ed0c9c71c4
1 changed files with 16 additions and 17 deletions
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33
lib/Analysis/ScalarEvolutionExpander.cpp
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@ -1777,8 +1777,8 @@ unsigned SCEVExpander::replaceCongruentIVs(Loop *L, const DominatorTree *DT,
PHINode *&OrigPhiRef = ExprToIVMap[SE.getSCEV(Phi)];
if (!OrigPhiRef) {
OrigPhiRef = Phi;
if (Phi->getType()->isIntegerTy() && TTI
&& TTI->isTruncateFree(Phi->getType(), Phis.back()->getType())) {
if (Phi->getType()->isIntegerTy() && TTI &&
TTI->isTruncateFree(Phi->getType(), Phis.back()->getType())) {
// This phi can be freely truncated to the narrowest phi type. Map the
// truncated expression to it so it will be reused for narrow types.
const SCEV *TruncExpr =
@ -1802,11 +1802,11 @@ unsigned SCEVExpander::replaceCongruentIVs(Loop *L, const DominatorTree *DT,
// If this phi has the same width but is more canonical, replace the
// original with it. As part of the "more canonical" determination,
// respect a prior decision to use an IV chain.
if (OrigPhiRef->getType() == Phi->getType()
&& !(ChainedPhis.count(Phi)
|| isExpandedAddRecExprPHI(OrigPhiRef, OrigInc, L))
&& (ChainedPhis.count(Phi)
|| isExpandedAddRecExprPHI(Phi, IsomorphicInc, L))) {
if (OrigPhiRef->getType() == Phi->getType() &&
!(ChainedPhis.count(Phi) ||
isExpandedAddRecExprPHI(OrigPhiRef, OrigInc, L)) &&
(ChainedPhis.count(Phi) ||
isExpandedAddRecExprPHI(Phi, IsomorphicInc, L))) {
std::swap(OrigPhiRef, Phi);
std::swap(OrigInc, IsomorphicInc);
}
@ -1818,14 +1818,13 @@ unsigned SCEVExpander::replaceCongruentIVs(Loop *L, const DominatorTree *DT,
// cycles that had postinc uses.
const SCEV *TruncExpr = SE.getTruncateOrNoop(SE.getSCEV(OrigInc),
IsomorphicInc->getType());
if (OrigInc != IsomorphicInc
&& TruncExpr == SE.getSCEV(IsomorphicInc)
&& SE.LI.replacementPreservesLCSSAForm(IsomorphicInc, OrigInc)
&& ((isa<PHINode>(OrigInc) && isa<PHINode>(IsomorphicInc))
|| hoistIVInc(OrigInc, IsomorphicInc))) {
DEBUG_WITH_TYPE(DebugType, dbgs()
<< "INDVARS: Eliminated congruent iv.inc: "
<< *IsomorphicInc << '\n');
if (OrigInc != IsomorphicInc && TruncExpr == SE.getSCEV(IsomorphicInc) &&
SE.LI.replacementPreservesLCSSAForm(IsomorphicInc, OrigInc) &&
((isa<PHINode>(OrigInc) && isa<PHINode>(IsomorphicInc)) ||
hoistIVInc(OrigInc, IsomorphicInc))) {
DEBUG_WITH_TYPE(DebugType,
dbgs() << "INDVARS: Eliminated congruent iv.inc: "
<< *IsomorphicInc << '\n');
Value *NewInc = OrigInc;
if (OrigInc->getType() != IsomorphicInc->getType()) {
Instruction *IP = nullptr;
@ -1843,8 +1842,8 @@ unsigned SCEVExpander::replaceCongruentIVs(Loop *L, const DominatorTree *DT,
DeadInsts.emplace_back(IsomorphicInc);
}
}
DEBUG_WITH_TYPE(DebugType, dbgs()
<< "INDVARS: Eliminated congruent iv: " << *Phi << '\n');
DEBUG_WITH_TYPE(DebugType, dbgs() << "INDVARS: Eliminated congruent iv: "
<< *Phi << '\n');
++NumElim;
Value *NewIV = OrigPhiRef;
if (OrigPhiRef->getType() != Phi->getType()) {