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915c1839fe
Separate patterns in asmcheck by spaces instead of commas. Many patterns end in comma (like "MOV [$]123,") so separating patterns by comma is not great; they're already quoted, so spaces are fine. Also replace all tabs in the assembly lines with spaces before matching. Finally, replace \$ or \\$ with [$] as the matching idiom. The effect of all these is to make the patterns look like: // amd64:"BSFQ" "ORQ [$]256" instead of the old: // amd64:"BSFQ","ORQ\t\\$256" Update all tests as well. Change-Id: Ia39febe5d7f67ba115846422789e11b185d5c807 Reviewed-on: https://go-review.googlesource.com/c/go/+/716060 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Alan Donovan <adonovan@google.com> Reviewed-by: Jorropo <jorropo.pgm@gmail.com>
162 lines
3.2 KiB
Go
162 lines
3.2 KiB
Go
// asmcheck
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// Copyright 2018 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package codegen
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import "runtime"
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// Check small copies are replaced with moves.
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func movesmall4() {
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x := [...]byte{1, 2, 3, 4}
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// 386:-".*memmove"
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// amd64:-".*memmove"
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// arm:-".*memmove"
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// arm64:-".*memmove"
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// ppc64x:-".*memmove"
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copy(x[1:], x[:])
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}
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func movesmall7() {
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x := [...]byte{1, 2, 3, 4, 5, 6, 7}
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// 386:-".*memmove"
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// amd64:-".*memmove"
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// arm64:-".*memmove"
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// ppc64x:-".*memmove"
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copy(x[1:], x[:])
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}
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func movesmall16() {
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x := [...]byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16}
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// amd64:-".*memmove"
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// ppc64x:".*memmove"
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copy(x[1:], x[:])
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}
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var x [256]byte
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// Check that large disjoint copies are replaced with moves.
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func moveDisjointStack32() {
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var s [32]byte
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// ppc64x:-".*memmove"
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// ppc64x/power8:"LXVD2X" -"ADD" -"BC"
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// ppc64x/power9:"LXV" -"LXVD2X" -"ADD" -"BC"
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copy(s[:], x[:32])
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runtime.KeepAlive(&s)
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}
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func moveDisjointStack64() {
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var s [96]byte
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// ppc64x:-".*memmove"
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// ppc64x/power8:"LXVD2X" "ADD" "BC"
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// ppc64x/power9:"LXV" -"LXVD2X" -"ADD" -"BC"
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copy(s[:], x[:96])
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runtime.KeepAlive(&s)
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}
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func moveDisjointStack() {
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var s [256]byte
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// s390x:-".*memmove"
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// amd64:-".*memmove"
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// ppc64x:-".*memmove"
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// ppc64x/power8:"LXVD2X"
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// ppc64x/power9:"LXV" -"LXVD2X"
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copy(s[:], x[:])
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runtime.KeepAlive(&s)
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}
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func moveDisjointArg(b *[256]byte) {
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var s [256]byte
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// s390x:-".*memmove"
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// amd64:-".*memmove"
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// ppc64x:-".*memmove"
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// ppc64x/power8:"LXVD2X"
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// ppc64x/power9:"LXV" -"LXVD2X"
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copy(s[:], b[:])
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runtime.KeepAlive(&s)
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}
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func moveDisjointNoOverlap(a *[256]byte) {
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// s390x:-".*memmove"
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// amd64:-".*memmove"
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// ppc64x:-".*memmove"
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// ppc64x/power8:"LXVD2X"
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// ppc64x/power9:"LXV" -"LXVD2X"
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copy(a[:], a[128:])
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}
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// Check arch-specific memmove lowering. See issue 41662 fot details
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func moveArchLowering1(b []byte, x *[1]byte) {
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_ = b[1]
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// amd64:-".*memmove"
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// arm64:-".*memmove"
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// loong64:-".*memmove"
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// ppc64x:-".*memmove"
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copy(b, x[:])
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}
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func moveArchLowering2(b []byte, x *[2]byte) {
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_ = b[2]
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// amd64:-".*memmove"
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// arm64:-".*memmove"
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// loong64:-".*memmove"
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// ppc64x:-".*memmove"
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copy(b, x[:])
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}
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func moveArchLowering4(b []byte, x *[4]byte) {
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_ = b[4]
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// amd64:-".*memmove"
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// arm64:-".*memmove"
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// loong64:-".*memmove"
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// ppc64x:-".*memmove"
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copy(b, x[:])
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}
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func moveArchLowering8(b []byte, x *[8]byte) {
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_ = b[8]
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// amd64:-".*memmove"
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// arm64:-".*memmove"
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// ppc64x:-".*memmove"
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copy(b, x[:])
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}
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func moveArchLowering16(b []byte, x *[16]byte) {
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_ = b[16]
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// amd64:-".*memmove"
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copy(b, x[:])
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}
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// Check that no branches are generated when the pointers are [not] equal.
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func ptrEqual() {
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// amd64:-"JEQ" -"JNE"
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// ppc64x:-"BEQ" -"BNE"
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// s390x:-"BEQ" -"BNE"
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copy(x[:], x[:])
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}
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func ptrOneOffset() {
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// amd64:-"JEQ" -"JNE"
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// ppc64x:-"BEQ" -"BNE"
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// s390x:-"BEQ" -"BNE"
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copy(x[1:], x[:])
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}
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func ptrBothOffset() {
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// amd64:-"JEQ" -"JNE"
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// ppc64x:-"BEQ" -"BNE"
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// s390x:-"BEQ" -"BNE"
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copy(x[1:], x[2:])
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}
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// Verify #62698 on PPC64.
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func noMaskOnCopy(a []int, s string, x int) int {
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// ppc64x:-"MOVD [$]-1", -"AND"
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return a[x&^copy([]byte{}, s)]
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}
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