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Swap SigSpecs using std::swap with moves

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This commit is contained in:
Robert O'Callahan 2025-09-25 03:04:17 +00:00
parent cb8f86b64f
commit 1c73011e7e
2 changed files with 8 additions and 7 deletions
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6
kernel/rtlil.h
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@ -1244,7 +1244,8 @@ private:
public:
SigSpec() : width_(0), hash_(0) {}
SigSpec(std::initializer_list<RTLIL::SigSpec> parts);
SigSpec(const SigSpec &) = default;
SigSpec(SigSpec &&) = default;
SigSpec(const RTLIL::Const &value);
SigSpec(RTLIL::Const &&value);
SigSpec(const RTLIL::SigChunk &chunk);
@ -1261,6 +1262,9 @@ public:
SigSpec(const std::set<RTLIL::SigBit> &bits);
explicit SigSpec(bool bit);
SigSpec &operator=(const SigSpec &rhs) = default;
SigSpec &operator=(SigSpec &&rhs) = default;
inline const std::vector<RTLIL::SigChunk> &chunks() const { pack(); return chunks_; }
inline const std::vector<RTLIL::SigBit> &bits() const { inline_unpack(); return bits_; }

9
passes/opt/opt_merge.cc
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@ -25,6 +25,7 @@
#include "libs/sha1/sha1.h"
#include <stdlib.h>
#include <stdio.h>
#include <algorithm>
#include <set>
#include <unordered_map>
#include <array>
@ -173,14 +174,10 @@ struct OptMergeWorker
if (cell1->type == ID($and) || cell1->type == ID($or) || cell1->type == ID($xor) || cell1->type == ID($xnor) || cell1->type == ID($add) || cell1->type == ID($mul) ||
cell1->type == ID($logic_and) || cell1->type == ID($logic_or) || cell1->type == ID($_AND_) || cell1->type == ID($_OR_) || cell1->type == ID($_XOR_)) {
if (conn1.at(ID::A) < conn1.at(ID::B)) {
RTLIL::SigSpec tmp = conn1[ID::A];
conn1[ID::A] = conn1[ID::B];
conn1[ID::B] = tmp;
std::swap(conn1[ID::A], conn1[ID::B]);
}
if (conn2.at(ID::A) < conn2.at(ID::B)) {
RTLIL::SigSpec tmp = conn2[ID::A];
conn2[ID::A] = conn2[ID::B];
conn2[ID::B] = tmp;
std::swap(conn2[ID::A], conn2[ID::B]);
}
} else
if (cell1->type == ID($reduce_xor) || cell1->type == ID($reduce_xnor)) {