| // Copyright 2016 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. |
| |
| // This file encapsulates some of the odd characteristics of the |
| // AMD64 instruction set, to minimize its interaction |
| // with the core of the assembler. |
| |
| package arch |
| |
| import ( |
| "cmd/internal/obj" |
| "cmd/internal/obj/x86" |
| ) |
| |
| // IsAMD4OP reports whether the op (as defined by an amd64.A* constant) is |
| // a 4-operand instruction. |
| func IsAMD4OP(op obj.As) bool { |
| switch op { |
| case x86.AVPERM2F128, |
| x86.AVPALIGNR, |
| x86.AVPERM2I128, |
| x86.AVINSERTI128, |
| x86.AVPBLENDD: |
| return true |
| } |
| return false |
| } |
