blob: a1e63d6249ac8a10f4b6a4c30f8475af569b9c87 (
plain)
1
2
3
4
5
6
7
8
|
// Copyright 2022 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.
// Prefer SARX/SHLX/SHRX instruction because it has less register restriction on the shift input.
(SAR(Q|L) x y) && buildcfg.GOAMD64 >= 3 => (SARX(Q|L) x y)
(SHL(Q|L) x y) && buildcfg.GOAMD64 >= 3 => (SHLX(Q|L) x y)
(SHR(Q|L) x y) && buildcfg.GOAMD64 >= 3 => (SHRX(Q|L) x y)
|
