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[cgp] group related code together [nfc]

This commit is contained in:
Philip Reames 2021-03-09 11:23:07 -08:00
parent e60ab72137
commit e85d798b5b
1 changed files with 4 additions and 3 deletions
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7
llvm/lib/CodeGen/CodeGenPrepare.cpp
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@ -1348,14 +1348,15 @@ bool CodeGenPrepare::replaceMathCmpWithIntrinsic(BinaryOperator *BO,
return false;
const Loop *L = LI->getLoopFor(BO->getParent());
assert(L && "L should not be null after isIVIncrement()");
// Do not risk on moving increment into a child loop.
if (LI->getLoopFor(Cmp->getParent()) != L)
return false;
// IV increment may have other users than the IV. We do not want to make
// dominance queries to analyze the legality of moving it towards the cmp,
// so just check that there is no other users.
if (!BO->hasOneUse())
return false;
// Do not risk on moving increment into a child loop.
if (LI->getLoopFor(Cmp->getParent()) != L)
return false;
// Ultimately, the insertion point must dominate latch. This should be a
// cheap check because no CFG changes & dom tree recomputation happens
// during the transform.