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Factor out "getFirstNonBoxedLoopFor" function [NFC] 

llvm-svn: 264781
This commit is contained in:
Johannes Doerfert 2016-03-29 20:32:43 +00:00
parent 07636cd5e7
commit 29cb067000
1 changed files with 11 additions and 6 deletions
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17
polly/lib/Analysis/ScopInfo.cpp
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@ -2179,6 +2179,15 @@ bool Scop::buildDomains(Region *R, ScopDetection &SD, DominatorTree &DT,
return true;
}
static Loop *
getFirstNonBoxedLoopFor(BasicBlock *BB, LoopInfo &LI,
const ScopDetection::BoxedLoopsSetTy &BoxedLoops) {
auto *L = LI.getLoopFor(BB);
while (BoxedLoops.count(L))
L = L->getParentLoop();
return L;
}
bool Scop::buildDomainsWithBranchConstraints(Region *R, ScopDetection &SD,
DominatorTree &DT, LoopInfo &LI) {
auto &BoxedLoops = *SD.getBoxedLoops(&getRegion());
@ -2251,9 +2260,7 @@ bool Scop::buildDomainsWithBranchConstraints(Region *R, ScopDetection &SD,
// Do not adjust the number of dimensions if we enter a boxed loop or are
// in a non-affine subregion or if the surrounding loop stays the same.
Loop *SuccBBLoop = LI.getLoopFor(SuccBB);
while (BoxedLoops.count(SuccBBLoop))
SuccBBLoop = SuccBBLoop->getParentLoop();
auto *SuccBBLoop = getFirstNonBoxedLoopFor(SuccBB, LI, BoxedLoops);
if (BBLoop != SuccBBLoop) {
@ -2389,9 +2396,7 @@ void Scop::propagateDomainConstraints(Region *R, ScopDetection &SD,
// predecessor and the current block are surrounded by different
// loops in the same depth.
PredBBDom = getDomainForBlock(PredBB, DomainMap, *R->getRegionInfo());
Loop *PredBBLoop = LI.getLoopFor(PredBB);
while (BoxedLoops.count(PredBBLoop))
PredBBLoop = PredBBLoop->getParentLoop();
auto *PredBBLoop = getFirstNonBoxedLoopFor(PredBB, LI, BoxedLoops);
int PredBBLoopDepth = getRelativeLoopDepth(PredBBLoop);
unsigned LoopDepthDiff = std::abs(BBLoopDepth - PredBBLoopDepth);