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collectBitParts - use const references. NFCI. 

Fixes clang-tidy warnings first noticed on D87452.
This commit is contained in:
Simon Pilgrim 2020-09-14 18:16:17 +01:00
parent 7841e21c98
commit 4ff4708d39
1 changed files with 10 additions and 10 deletions
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20
llvm/lib/Transforms/Utils/Local.cpp
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@ -2795,10 +2795,10 @@ collectBitParts(Value *V, bool MatchBSwaps, bool MatchBitReversals,
if (Instruction *I = dyn_cast<Instruction>(V)) {
// If this is an or instruction, it may be an inner node of the bswap.
if (I->getOpcode() == Instruction::Or) {
auto &A = collectBitParts(I->getOperand(0), MatchBSwaps,
MatchBitReversals, BPS, Depth + 1);
auto &B = collectBitParts(I->getOperand(1), MatchBSwaps,
MatchBitReversals, BPS, Depth + 1);
const auto &A = collectBitParts(I->getOperand(0), MatchBSwaps,
MatchBitReversals, BPS, Depth + 1);
const auto &B = collectBitParts(I->getOperand(1), MatchBSwaps,
MatchBitReversals, BPS, Depth + 1);
if (!A || !B)
return Result;
@ -2830,8 +2830,8 @@ collectBitParts(Value *V, bool MatchBSwaps, bool MatchBitReversals,
if (BitShift > BitWidth)
return Result;
auto &Res = collectBitParts(I->getOperand(0), MatchBSwaps,
MatchBitReversals, BPS, Depth + 1);
const auto &Res = collectBitParts(I->getOperand(0), MatchBSwaps,
MatchBitReversals, BPS, Depth + 1);
if (!Res)
return Result;
Result = Res;
@ -2862,8 +2862,8 @@ collectBitParts(Value *V, bool MatchBSwaps, bool MatchBitReversals,
if (!MatchBitReversals && NumMaskedBits % 8 != 0)
return Result;
auto &Res = collectBitParts(I->getOperand(0), MatchBSwaps,
MatchBitReversals, BPS, Depth + 1);
const auto &Res = collectBitParts(I->getOperand(0), MatchBSwaps,
MatchBitReversals, BPS, Depth + 1);
if (!Res)
return Result;
Result = Res;
@ -2877,8 +2877,8 @@ collectBitParts(Value *V, bool MatchBSwaps, bool MatchBitReversals,
// If this is a zext instruction zero extend the result.
if (I->getOpcode() == Instruction::ZExt) {
auto &Res = collectBitParts(I->getOperand(0), MatchBSwaps,
MatchBitReversals, BPS, Depth + 1);
const auto &Res = collectBitParts(I->getOperand(0), MatchBSwaps,
MatchBitReversals, BPS, Depth + 1);
if (!Res)
return Result;