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bmi_amd64.go
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bmi_amd64.go
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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you 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.
// +build !noasm
package bmi
import (
"golang.org/x/sys/cpu"
)
func init() {
if cpu.X86.HasBMI2 {
funclist.extractBits = extractBitsBMI2
} else {
funclist.extractBits = extractBitsGo
}
if cpu.X86.HasAVX2 {
funclist.gtbitmap = greaterThanBitmapBMI2
} else {
funclist.gtbitmap = greaterThanBitmapGo
}
}