mirror of
https://github.com/emmansun/gmsm.git
synced 2025-04-26 12:16:20 +08:00
32 lines
1.0 KiB
Go
32 lines
1.0 KiB
Go
// Copyright 2023 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
//go:build !purego && (386 || amd64 || arm || arm64 || ppc64 || ppc64le || riscv64 || s390x)
|
|
|
|
package bigmod
|
|
|
|
import "golang.org/x/sys/cpu"
|
|
|
|
// amd64 assembly uses ADCX/ADOX/MULX if ADX is available to run two carry
|
|
// chains in the flags in parallel across the whole operation, and aggressively
|
|
// unrolls loops. arm64 processes four words at a time.
|
|
//
|
|
// It's unclear why the assembly for all other architectures, as well as for
|
|
// amd64 without ADX, perform better than the compiler output.
|
|
// TODO(filippo): file cmd/compile performance issue.
|
|
|
|
var supportADX = cpu.X86.HasADX && cpu.X86.HasBMI2
|
|
|
|
//go:noescape
|
|
func addMulVVW256(z, x *uint, y uint) (c uint)
|
|
|
|
//go:noescape
|
|
func addMulVVW1024(z, x *uint, y uint) (c uint)
|
|
|
|
//go:noescape
|
|
func addMulVVW1536(z, x *uint, y uint) (c uint)
|
|
|
|
//go:noescape
|
|
func addMulVVW2048(z, x *uint, y uint) (c uint)
|