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[SCEV] Use std::move to avoid some APInt copies. 

llvm-svn: 302334
This commit is contained in:
Craig Topper 2017-05-06 05:22:56 +00:00
parent c97fdb846e
commit 69f1af29fb
1 changed files with 5 additions and 5 deletions
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10
llvm/lib/Analysis/ScalarEvolution.cpp
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@ -2970,7 +2970,7 @@ static const APInt gcd(const SCEVConstant *C1, const SCEVConstant *C2) {
else if (ABW < BBW)
A = A.zext(BBW);
return APIntOps::GreatestCommonDivisor(A, B);
return APIntOps::GreatestCommonDivisor(std::move(A), std::move(B));
}
/// Get a canonical unsigned division expression, or something simpler if
@ -8980,7 +8980,7 @@ bool ScalarEvolution::doesIVOverflowOnLT(const SCEV *RHS, const SCEV *Stride,
.getSignedMax();
// SMaxRHS + SMaxStrideMinusOne > SMaxValue => overflow!
return (MaxValue - MaxStrideMinusOne).slt(MaxRHS);
return (std::move(MaxValue) - std::move(MaxStrideMinusOne)).slt(MaxRHS);
}
APInt MaxRHS = getUnsignedRange(RHS).getUnsignedMax();
@ -8989,7 +8989,7 @@ bool ScalarEvolution::doesIVOverflowOnLT(const SCEV *RHS, const SCEV *Stride,
.getUnsignedMax();
// UMaxRHS + UMaxStrideMinusOne > UMaxValue => overflow!
return (MaxValue - MaxStrideMinusOne).ult(MaxRHS);
return (std::move(MaxValue) - std::move(MaxStrideMinusOne)).ult(MaxRHS);
}
bool ScalarEvolution::doesIVOverflowOnGT(const SCEV *RHS, const SCEV *Stride,
@ -9006,7 +9006,7 @@ bool ScalarEvolution::doesIVOverflowOnGT(const SCEV *RHS, const SCEV *Stride,
.getSignedMax();
// SMinRHS - SMaxStrideMinusOne < SMinValue => overflow!
return (MinValue + MaxStrideMinusOne).sgt(MinRHS);
return (std::move(MinValue) + std::move(MaxStrideMinusOne)).sgt(MinRHS);
}
APInt MinRHS = getUnsignedRange(RHS).getUnsignedMin();
@ -9015,7 +9015,7 @@ bool ScalarEvolution::doesIVOverflowOnGT(const SCEV *RHS, const SCEV *Stride,
.getUnsignedMax();
// UMinRHS - UMaxStrideMinusOne < UMinValue => overflow!
return (MinValue + MaxStrideMinusOne).ugt(MinRHS);
return (std::move(MinValue) + std::move(MaxStrideMinusOne)).ugt(MinRHS);
}
const SCEV *ScalarEvolution::computeBECount(const SCEV *Delta, const SCEV *Step,