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[KnownBits] Avoid some copies (NFC) 

These lambdas don't need copies, use const reference.
This commit is contained in:
Nikita Popov 2020-09-07 21:07:02 +02:00
parent 9fb46a452d
commit ddab4cd83e
1 changed files with 3 additions and 3 deletions
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6
llvm/lib/Support/KnownBits.cpp
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@ -115,13 +115,13 @@ KnownBits KnownBits::umax(const KnownBits &LHS, const KnownBits &RHS) {
KnownBits KnownBits::umin(const KnownBits &LHS, const KnownBits &RHS) {
// Flip the range of values: [0, 0xFFFFFFFF] <-> [0xFFFFFFFF, 0]
auto Flip = [](KnownBits Val) { return KnownBits(Val.One, Val.Zero); };
auto Flip = [](const KnownBits &Val) { return KnownBits(Val.One, Val.Zero); };
return Flip(umax(Flip(LHS), Flip(RHS)));
}
KnownBits KnownBits::smax(const KnownBits &LHS, const KnownBits &RHS) {
// Flip the range of values: [-0x80000000, 0x7FFFFFFF] <-> [0, 0xFFFFFFFF]
auto Flip = [](KnownBits Val) {
auto Flip = [](const KnownBits &Val) {
unsigned SignBitPosition = Val.getBitWidth() - 1;
APInt Zero = Val.Zero;
APInt One = Val.One;
@ -134,7 +134,7 @@ KnownBits KnownBits::smax(const KnownBits &LHS, const KnownBits &RHS) {
KnownBits KnownBits::smin(const KnownBits &LHS, const KnownBits &RHS) {
// Flip the range of values: [-0x80000000, 0x7FFFFFFF] <-> [0xFFFFFFFF, 0]
auto Flip = [](KnownBits Val) {
auto Flip = [](const KnownBits &Val) {
unsigned SignBitPosition = Val.getBitWidth() - 1;
APInt Zero = Val.One;
APInt One = Val.Zero;