mirror of
https://github.com/golang/go
synced 2024-11-18 00:44:47 -07:00
876c1feb7d
Change-Id: Ife4e065246729319c39e57a4fbd8e6f7b37724e1
GitHub-Last-Rev: e71803eaeb
GitHub-Pull-Request: golang/go#38527
Reviewed-on: https://go-review.googlesource.com/c/go/+/228901
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
125 lines
2.5 KiB
Go
125 lines
2.5 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
|
|
|
|
import "runtime"
|
|
|
|
// Check small copies are replaced with moves.
|
|
|
|
func movesmall4() {
|
|
x := [...]byte{1, 2, 3, 4}
|
|
// 386:-".*memmove"
|
|
// amd64:-".*memmove"
|
|
// arm:-".*memmove"
|
|
// arm64:-".*memmove"
|
|
// ppc64:-".*memmove"
|
|
// ppc64le:-".*memmove"
|
|
copy(x[1:], x[:])
|
|
}
|
|
|
|
func movesmall7() {
|
|
x := [...]byte{1, 2, 3, 4, 5, 6, 7}
|
|
// 386:-".*memmove"
|
|
// amd64:-".*memmove"
|
|
// arm64:-".*memmove"
|
|
// ppc64:-".*memmove"
|
|
// ppc64le:-".*memmove"
|
|
copy(x[1:], x[:])
|
|
}
|
|
|
|
func movesmall16() {
|
|
x := [...]byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16}
|
|
// amd64:-".*memmove"
|
|
// ppc64:".*memmove"
|
|
// ppc64le:".*memmove"
|
|
copy(x[1:], x[:])
|
|
}
|
|
|
|
var x [256]byte
|
|
|
|
// Check that large disjoint copies are replaced with moves.
|
|
|
|
func moveDisjointStack32() {
|
|
var s [32]byte
|
|
// ppc64:-".*memmove"
|
|
// ppc64le:-".*memmove"
|
|
// ppc64le/power8:"LXVD2X",-"ADD",-"BC"
|
|
// ppc64le/power9:"LXV",-"LXVD2X",-"ADD",-"BC"
|
|
copy(s[:], x[:32])
|
|
runtime.KeepAlive(&s)
|
|
}
|
|
|
|
func moveDisjointStack64() {
|
|
var s [96]byte
|
|
// ppc64:-".*memmove"
|
|
// ppc64le:-".*memmove"
|
|
// ppc64le/power8:"LXVD2X","ADD","BC"
|
|
// ppc64le/power9:"LXV",-"LXVD2X",-"ADD",-"BC"
|
|
copy(s[:], x[:96])
|
|
runtime.KeepAlive(&s)
|
|
}
|
|
|
|
func moveDisjointStack() {
|
|
var s [256]byte
|
|
// s390x:-".*memmove"
|
|
// amd64:-".*memmove"
|
|
// ppc64:-".*memmove"
|
|
// ppc64le:-".*memmove"
|
|
// ppc64le/power8:"LXVD2X"
|
|
// ppc64le/power9:"LXV",-"LXVD2X"
|
|
copy(s[:], x[:])
|
|
runtime.KeepAlive(&s)
|
|
}
|
|
|
|
func moveDisjointArg(b *[256]byte) {
|
|
var s [256]byte
|
|
// s390x:-".*memmove"
|
|
// amd64:-".*memmove"
|
|
// ppc64:-".*memmove"
|
|
// ppc64le:-".*memmove"
|
|
// ppc64le/power8:"LXVD2X"
|
|
// ppc64le/power9:"LXV",-"LXVD2X"
|
|
copy(s[:], b[:])
|
|
runtime.KeepAlive(&s)
|
|
}
|
|
|
|
func moveDisjointNoOverlap(a *[256]byte) {
|
|
// s390x:-".*memmove"
|
|
// amd64:-".*memmove"
|
|
// ppc64:-".*memmove"
|
|
// ppc64le:-".*memmove"
|
|
// ppc64le/power8:"LXVD2X"
|
|
// ppc64le/power9:"LXV",-"LXVD2X"
|
|
copy(a[:], a[128:])
|
|
}
|
|
|
|
// Check that no branches are generated when the pointers are [not] equal.
|
|
|
|
func ptrEqual() {
|
|
// amd64:-"JEQ",-"JNE"
|
|
// ppc64:-"BEQ",-"BNE"
|
|
// ppc64le:-"BEQ",-"BNE"
|
|
// s390x:-"BEQ",-"BNE"
|
|
copy(x[:], x[:])
|
|
}
|
|
|
|
func ptrOneOffset() {
|
|
// amd64:-"JEQ",-"JNE"
|
|
// ppc64:-"BEQ",-"BNE"
|
|
// ppc64le:-"BEQ",-"BNE"
|
|
// s390x:-"BEQ",-"BNE"
|
|
copy(x[1:], x[:])
|
|
}
|
|
|
|
func ptrBothOffset() {
|
|
// amd64:-"JEQ",-"JNE"
|
|
// ppc64:-"BEQ",-"BNE"
|
|
// ppc64le:-"BEQ",-"BNE"
|
|
// s390x:-"BEQ",-"BNE"
|
|
copy(x[1:], x[2:])
|
|
}
|