mirror of
https://github.com/golang/go
synced 2024-09-06 00:19:45 +00:00
![Josh Bleecher Snyder](/assets/img/avatar_default.png)
Change-Id: I33f5b5051e5f75aa264ec656926223c5a3c09c1b Reviewed-on: https://go-review.googlesource.com/c/go/+/167498 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by: Matt Layher <mdlayher@gmail.com>
254 lines
5.6 KiB
Go
254 lines
5.6 KiB
Go
// asmcheck
|
|
|
|
// Copyright 2018 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.
|
|
|
|
package codegen
|
|
|
|
var sval64 [8]int64
|
|
var sval32 [8]int32
|
|
var sval16 [8]int16
|
|
var sval8 [8]int8
|
|
var val64 [8]uint64
|
|
var val32 [8]uint32
|
|
var val16 [8]uint16
|
|
var val8 [8]uint8
|
|
|
|
// ----------------------------- //
|
|
// avoid zero/sign extensions //
|
|
// ----------------------------- //
|
|
|
|
func set16(x8 int8, u8 uint8, y8 int8, z8 uint8) {
|
|
// Truncate not needed, load does sign/zero extend
|
|
// ppc64:-"MOVB\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVB\tR\\d+,\\sR\\d+"
|
|
sval16[0] = int16(x8)
|
|
|
|
// ppc64:-"MOVBZ\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVBZ\tR\\d+,\\sR\\d+"
|
|
val16[0] = uint16(u8)
|
|
|
|
// AND not needed due to size
|
|
// ppc64:-"ANDCC"
|
|
// ppc64le:-"ANDCC"
|
|
sval16[1] = 255 & int16(x8+y8)
|
|
|
|
// ppc64:-"ANDCC"
|
|
// ppc64le:-"ANDCC"
|
|
val16[1] = 255 & uint16(u8+z8)
|
|
|
|
}
|
|
func shiftidx(x8 int8, u8 uint8, x16 int16, u16 uint16, x32 int32, u32 uint32) {
|
|
// ppc64:-"MOVB\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVB\tR\\d+,\\sR\\d+"
|
|
sval16[0] = int16(val16[x8>>1])
|
|
|
|
// ppc64:-"MOVBZ\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVBZ\tR\\d+,\\sR\\d+"
|
|
val16[0] = uint16(sval16[u8>>2])
|
|
|
|
// ppc64:-"MOVH\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVH\tR\\d+,\\sR\\d+"
|
|
sval16[1] = int16(val16[x16>>1])
|
|
|
|
// ppc64:-"MOVHZ\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVHZ\tR\\d+,\\sR\\d+"
|
|
val16[1] = uint16(sval16[u16>>2])
|
|
|
|
}
|
|
|
|
func setnox(x8 int8, u8 uint8, y8 int8, z8 uint8, x16 int16, u16 uint16, x32 int32, u32 uint32) {
|
|
// Truncate not needed due to sign/zero extension on load
|
|
|
|
// ppc64:-"MOVB\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVB\tR\\d+,\\sR\\d+"
|
|
sval16[0] = int16(x8)
|
|
|
|
// ppc64:-"MOVBZ\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVBZ\tR\\d+,\\sR\\d+"
|
|
val16[0] = uint16(u8)
|
|
|
|
// AND not needed due to size
|
|
// ppc64:-"ANDCC"
|
|
// ppc64le:-"ANDCC"
|
|
sval16[1] = 255 & int16(x8+y8)
|
|
|
|
// ppc64:-"ANDCC"
|
|
// ppc64le:-"ANDCC"
|
|
val16[1] = 255 & uint16(u8+z8)
|
|
|
|
// ppc64:-"MOVB\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVB\tR\\d+,\\sR\\d+"
|
|
sval32[0] = int32(x8)
|
|
|
|
// ppc64:-"MOVH\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVH\tR\\d+,\\sR\\d+"
|
|
sval32[1] = int32(x16)
|
|
|
|
//ppc64:-"MOVBZ\tR\\d+,\\sR\\d+"
|
|
//ppc64le:-"MOVBZ\tR\\d+,\\sR\\d+"
|
|
val32[0] = uint32(u8)
|
|
|
|
// ppc64:-"MOVHZ\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVHZ\tR\\d+,\\sR\\d+"
|
|
val32[1] = uint32(u16)
|
|
|
|
// ppc64:-"MOVB\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVB\tR\\d+,\\sR\\d+"
|
|
sval64[0] = int64(x8)
|
|
|
|
// ppc64:-"MOVH\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVH\tR\\d+,\\sR\\d+"
|
|
sval64[1] = int64(x16)
|
|
|
|
// ppc64:-"MOVW\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVW\tR\\d+,\\sR\\d+"
|
|
sval64[2] = int64(x32)
|
|
|
|
//ppc64:-"MOVBZ\tR\\d+,\\sR\\d+"
|
|
//ppc64le:-"MOVBZ\tR\\d+,\\sR\\d+"
|
|
val64[0] = uint64(u8)
|
|
|
|
// ppc64:-"MOVHZ\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVHZ\tR\\d+,\\sR\\d+"
|
|
val64[1] = uint64(u16)
|
|
|
|
// ppc64:-"MOVWZ\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVWZ\tR\\d+,\\sR\\d+"
|
|
val64[2] = uint64(u32)
|
|
}
|
|
|
|
func cmp16(x8 int8, u8 uint8, x32 int32, u32 uint32, x64 int64, u64 uint64) bool {
|
|
// ppc64:-"MOVB\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVB\tR\\d+,\\sR\\d+"
|
|
if int16(x8) == sval16[0] {
|
|
return true
|
|
}
|
|
|
|
// ppc64:-"MOVBZ\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVBZ\tR\\d+,\\sR\\d+"
|
|
if uint16(u8) == val16[0] {
|
|
return true
|
|
}
|
|
|
|
// ppc64:-"MOVHZ\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVHZ\tR\\d+,\\sR\\d+"
|
|
if uint16(u32>>16) == val16[0] {
|
|
return true
|
|
}
|
|
|
|
// ppc64:-"MOVHZ\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVHZ\tR\\d+,\\sR\\d+"
|
|
if uint16(u64>>48) == val16[0] {
|
|
return true
|
|
}
|
|
|
|
// Verify the truncates are using the correct sign.
|
|
// ppc64:-"MOVHZ\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVHZ\tR\\d+,\\sR\\d+"
|
|
if int16(x32) == sval16[0] {
|
|
return true
|
|
}
|
|
|
|
// ppc64:-"MOVH\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVH\tR\\d+,\\sR\\d+"
|
|
if uint16(u32) == val16[0] {
|
|
return true
|
|
}
|
|
|
|
// ppc64:-"MOVHZ\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVHZ\tR\\d+,\\sR\\d+"
|
|
if int16(x64) == sval16[0] {
|
|
return true
|
|
}
|
|
|
|
// ppc64:-"MOVH\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVH\tR\\d+,\\sR\\d+"
|
|
if uint16(u64) == val16[0] {
|
|
return true
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
func cmp32(x8 int8, u8 uint8, x16 int16, u16 uint16, x64 int64, u64 uint64) bool {
|
|
// ppc64:-"MOVB\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVB\tR\\d+,\\sR\\d+"
|
|
if int32(x8) == sval32[0] {
|
|
return true
|
|
}
|
|
|
|
// ppc64:-"MOVBZ\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVBZ\tR\\d+,\\sR\\d+"
|
|
if uint32(u8) == val32[0] {
|
|
return true
|
|
}
|
|
|
|
// ppc64:-"MOVH\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVH\tR\\d+,\\sR\\d+"
|
|
if int32(x16) == sval32[0] {
|
|
return true
|
|
}
|
|
|
|
// ppc64:-"MOVHZ\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVHZ\tR\\d+,\\sR\\d+"
|
|
if uint32(u16) == val32[0] {
|
|
return true
|
|
}
|
|
|
|
// Verify the truncates are using the correct sign.
|
|
// ppc64:-"MOVWZ\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVWZ\tR\\d+,\\sR\\d+"
|
|
if int32(x64) == sval32[0] {
|
|
return true
|
|
}
|
|
|
|
// ppc64:-"MOVW\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVW\tR\\d+,\\sR\\d+"
|
|
if uint32(u64) == val32[0] {
|
|
return true
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
func cmp64(x8 int8, u8 uint8, x16 int16, u16 uint16, x32 int32, u32 uint32) bool {
|
|
// ppc64:-"MOVB\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVB\tR\\d+,\\sR\\d+"
|
|
if int64(x8) == sval64[0] {
|
|
return true
|
|
}
|
|
|
|
// ppc64:-"MOVBZ\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVBZ\tR\\d+,\\sR\\d+"
|
|
if uint64(u8) == val64[0] {
|
|
return true
|
|
}
|
|
|
|
// ppc64:-"MOVH\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVH\tR\\d+,\\sR\\d+"
|
|
if int64(x16) == sval64[0] {
|
|
return true
|
|
}
|
|
|
|
// ppc64:-"MOVHZ\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVHZ\tR\\d+,\\sR\\d+"
|
|
if uint64(u16) == val64[0] {
|
|
return true
|
|
}
|
|
|
|
// ppc64:-"MOVW\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVW\tR\\d+,\\sR\\d+"
|
|
if int64(x32) == sval64[0] {
|
|
return true
|
|
}
|
|
|
|
// ppc64:-"MOVWZ\tR\\d+,\\sR\\d+"
|
|
// ppc64le:-"MOVWZ\tR\\d+,\\sR\\d+"
|
|
if uint64(u32) == val64[0] {
|
|
return true
|
|
}
|
|
return false
|
|
}
|