``` feat(pet): 重构宠物繁殖系统，添加蛋孵化功能

common/utils/concurrent-swiss-map/swiss/bits_amd64.go

@@ -0,0 +1,52 @@
+// Copyright 2023 Dolthub, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//nolint:all
+//go:build amd64 && !nosimd
+
+package swiss
+
+import (
+	"github.com/mhmtszr/concurrent-swiss-map/swiss/simd"
+	"math/bits"
+	_ "unsafe"
+)
+
+const (
+	groupSize       = 16
+	maxAvgGroupLoad = 14
+)
+
+type bitset uint16
+
+//nolint:all
+func metaMatchH2(m *metadata, h h2) bitset {
+	b := simd.MatchMetadata((*[16]int8)(m), int8(h))
+	return bitset(b)
+}
+
+//nolint:all
+func metaMatchEmpty(m *metadata) bitset {
+	b := simd.MatchMetadata((*[16]int8)(m), empty)
+	return bitset(b)
+}
+
+//nolint:all
+func nextMatch(b *bitset) (s uint32) {
+	s = uint32(bits.TrailingZeros16(uint16(*b)))
+	*b &= ^(1 << s) // clear bit |s|
+	return
+}
+
+//go:linkname fastrand runtime.fastrand
+func fastrand() uint32