github.com/consensys/gnark-crypto@v0.14.0/ecc/bls24-315/internal/fptower/asm.go (about)

     1  //go:build !noadx
     2  // +build !noadx
     3  
     4  // Copyright 2020 ConsenSys Software Inc.
     5  //
     6  // Licensed under the Apache License, Version 2.0 (the "License");
     7  // you may not use this file except in compliance with the License.
     8  // You may obtain a copy of the License at
     9  //
    10  //     http://www.apache.org/licenses/LICENSE-2.0
    11  //
    12  // Unless required by applicable law or agreed to in writing, software
    13  // distributed under the License is distributed on an "AS IS" BASIS,
    14  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    15  // See the License for the specific language governing permissions and
    16  // limitations under the License.
    17  
    18  package fptower
    19  
    20  import "golang.org/x/sys/cpu"
    21  
    22  // supportAdx will be set only on amd64 that has MULX and ADDX instructions
    23  var (
    24  	supportAdx = cpu.X86.HasADX && cpu.X86.HasBMI2
    25  	_          = supportAdx // used in asm
    26  )