diff options
Diffstat (limited to 'lib/Analysis/ScalarEvolution.cpp')
| -rw-r--r-- | lib/Analysis/ScalarEvolution.cpp | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp index efd2450..5c223a3 100644 --- a/lib/Analysis/ScalarEvolution.cpp +++ b/lib/Analysis/ScalarEvolution.cpp @@ -1682,7 +1682,7 @@ const SCEV *ScalarEvolution::getUDivExpr(const SCEV *LHS, if (const SCEVConstant *RHSC = dyn_cast<SCEVConstant>(RHS)) { if (RHSC->getValue()->equalsInt(1)) - return LHS; // X udiv 1 --> x + return LHS; // X udiv 1 --> x if (RHSC->isZero()) return getIntegerSCEV(0, LHS->getType()); // value is undefined @@ -3533,8 +3533,8 @@ ScalarEvolution::ComputeBackedgeTakenCountFromExitCondICmp(const Loop *L, if (!isa<SCEVCouldNotCompute>(TC)) return TC; break; } - case ICmpInst::ICMP_EQ: { - // Convert to: while (X-Y == 0) // while (X == Y) + case ICmpInst::ICMP_EQ: { // while (X == Y) + // Convert to: while (X-Y == 0) const SCEV *TC = HowFarToNonZero(getMinusSCEV(LHS, RHS), L); if (!isa<SCEVCouldNotCompute>(TC)) return TC; break; @@ -3986,7 +3986,7 @@ const SCEV *ScalarEvolution::getSCEVAtScope(const SCEV *V, const Loop *L) { getContext()); else C = ConstantFoldInstOperands(I->getOpcode(), I->getType(), - &Operands[0], Operands.size(), + &Operands[0], Operands.size(), getContext()); Pair.first->second = C; return getSCEV(C); @@ -4235,7 +4235,7 @@ const SCEV *ScalarEvolution::HowFarToZero(const SCEV *V, const Loop *L) { // First, handle unitary steps. if (StepC->getValue()->equalsInt(1)) // 1*N = -Start (mod 2^BW), so: - return getNegativeSCEV(Start); // N = -Start (as unsigned) + return getNegativeSCEV(Start); // N = -Start (as unsigned) if (StepC->getValue()->isAllOnesValue()) // -1*N = -Start (mod 2^BW), so: return Start; // N = Start (as unsigned) |