Source File
nat_asm.go
Belonging Package
crypto/internal/fips140/bigmod
// 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 || loong64 || ppc64 || ppc64le || riscv64 || s390x)
package bigmod
import (
)
// 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.X86HasADX && cpu.X86HasBMI2
func init() {
if cpu.AMD64 {
impl.Register("aes", "ADX", &supportADX)
}
}
//go:noescape
func addMulVVW1024(, *uint, uint) ( uint)
//go:noescape
func addMulVVW1536(, *uint, uint) ( uint)
//go:noescape
func addMulVVW2048(, *uint, uint) ( uint)
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