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[NFC] Factor out some local vars

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llvm-svn: 351416
This commit is contained in:
Max Kazantsev 2019-01-17 06:20:42 +00:00
parent c66efefd0f
commit 51a580322e
1 changed files with 9 additions and 7 deletions
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16
lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp
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@ -1264,15 +1264,17 @@ LoopConstrainer::RewrittenRangeInfo LoopConstrainer::changeIterationSpaceEnd(
Increasing
? (IsSignedPredicate ? ICmpInst::ICMP_SLT : ICmpInst::ICMP_ULT)
: (IsSignedPredicate ? ICmpInst::ICMP_SGT : ICmpInst::ICMP_UGT);
EnterLoopCond = B.CreateICmp(Pred, LS.IndVarStart, ExitSubloopAt);
Value *IndVarStart = LS.IndVarStart;
Value *IndVarBase = LS.IndVarBase;
Value *LoopExitAt = LS.LoopExitAt;
EnterLoopCond = B.CreateICmp(Pred, IndVarStart, ExitSubloopAt);
B.CreateCondBr(EnterLoopCond, LS.Header, RRI.PseudoExit);
PreheaderJump->eraseFromParent();
LS.LatchBr->setSuccessor(LS.LatchBrExitIdx, RRI.ExitSelector);
B.SetInsertPoint(LS.LatchBr);
Value *TakeBackedgeLoopCond = B.CreateICmp(Pred, LS.IndVarBase,
ExitSubloopAt);
Value *TakeBackedgeLoopCond = B.CreateICmp(Pred, IndVarBase, ExitSubloopAt);
Value *CondForBranch = LS.LatchBrExitIdx == 1
? TakeBackedgeLoopCond
@ -1285,7 +1287,7 @@ LoopConstrainer::RewrittenRangeInfo LoopConstrainer::changeIterationSpaceEnd(
// IterationsLeft - are there any more iterations left, given the original
// upper bound on the induction variable? If not, we branch to the "real"
// exit.
Value *IterationsLeft = B.CreateICmp(Pred, LS.IndVarBase, LS.LoopExitAt);
Value *IterationsLeft = B.CreateICmp(Pred, IndVarBase, LoopExitAt);
B.CreateCondBr(IterationsLeft, RRI.PseudoExit, LS.LatchExit);
BranchInst *BranchToContinuation =
@ -1304,10 +1306,10 @@ LoopConstrainer::RewrittenRangeInfo LoopConstrainer::changeIterationSpaceEnd(
RRI.PHIValuesAtPseudoExit.push_back(NewPHI);
}
RRI.IndVarEnd = PHINode::Create(LS.IndVarBase->getType(), 2, "indvar.end",
RRI.IndVarEnd = PHINode::Create(IndVarBase->getType(), 2, "indvar.end",
BranchToContinuation);
RRI.IndVarEnd->addIncoming(LS.IndVarStart, Preheader);
RRI.IndVarEnd->addIncoming(LS.IndVarBase, RRI.ExitSelector);
RRI.IndVarEnd->addIncoming(IndVarStart, Preheader);
RRI.IndVarEnd->addIncoming(IndVarBase, RRI.ExitSelector);
// The latch exit now has a branch from `RRI.ExitSelector' instead of
// `LS.Latch'. The PHI nodes need to be updated to reflect that.