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go/test/codegen/memops.go
Russ Cox 915c1839fe test/codegen: simplify asmcheck pattern matching 
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>
2025-10-29 13:55:00 -07:00

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// 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 x [2]bool
var x8 [2]uint8
var x16 [2]uint16
var x32 [2]uint32
var x64 [2]uint64
func compMem1() int {
// amd64:`CMPB command-line-arguments.x\+1\(SB\), [$]0`
if x[1] {
return 1
}
// amd64:`CMPB command-line-arguments.x8\+1\(SB\), [$]7`
if x8[1] == 7 {
return 1
}
// amd64:`CMPW command-line-arguments.x16\+2\(SB\), [$]7`
if x16[1] == 7 {
return 1
}
// amd64:`CMPL command-line-arguments.x32\+4\(SB\), [$]7`
if x32[1] == 7 {
return 1
}
// amd64:`CMPQ command-line-arguments.x64\+8\(SB\), [$]7`
if x64[1] == 7 {
return 1
}
return 0
}
type T struct {
x bool
x8 uint8
x16 uint16
x32 uint32
x64 uint64
a [2]int // force it passed in memory
}
func compMem2(t T) int {
// amd64:`CMPB .*\(SP\), [$]0`
if t.x {
return 1
}
// amd64:`CMPB .*\(SP\), [$]7`
if t.x8 == 7 {
return 1
}
// amd64:`CMPW .*\(SP\), [$]7`
if t.x16 == 7 {
return 1
}
// amd64:`CMPL .*\(SP\), [$]7`
if t.x32 == 7 {
return 1
}
// amd64:`CMPQ .*\(SP\), [$]7`
if t.x64 == 7 {
return 1
}
return 0
}
func compMem3(x, y *int) (int, bool) {
// We can do comparisons of a register with memory even if
// the register is used subsequently.
r := *x
// amd64:`CMPQ \(`
// 386:`CMPL \(`
return r, r < *y
}
// The following functions test that indexed load/store operations get generated.
func idxInt8(x, y []int8, i int) {
var t int8
// amd64: `MOVBL[SZ]X 1\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*1\), [A-Z]+[0-9]*`
// 386: `MOVBL[SZ]X 1\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*1\), [A-Z]+[0-9]*`
t = x[i+1]
// amd64: `MOVB [A-Z]+[0-9]*, 1\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*1\)`
// 386: `MOVB [A-Z]+[0-9]*, 1\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*1\)`
y[i+1] = t
// amd64: `MOVB [$]77, 1\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*1\)`
// 386: `MOVB [$]77, 1\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*1\)`
x[i+1] = 77
}
func idxInt16(x, y []int16, i int) {
var t int16
// amd64: `MOVWL[SZ]X 2\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*2\), [A-Z]+[0-9]*`
// 386: `MOVWL[SZ]X 2\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*2\), [A-Z]+[0-9]*`
t = x[i+1]
// amd64: `MOVW [A-Z]+[0-9]*, 2\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*2\)`
// 386: `MOVW [A-Z]+[0-9]*, 2\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*2\)`
y[i+1] = t
// amd64: `MOVWL[SZ]X 2\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[12]\), [A-Z]+[0-9]*`
// 386: `MOVWL[SZ]X 2\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[12]\), [A-Z]+[0-9]*`
t = x[16*i+1]
// amd64: `MOVW [A-Z]+[0-9]*, 2\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[12]\)`
// 386: `MOVW [A-Z]+[0-9]*, 2\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[12]\)`
y[16*i+1] = t
// amd64: `MOVW [$]77, 2\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*2\)`
// 386: `MOVW [$]77, 2\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*2\)`
x[i+1] = 77
// amd64: `MOVW [$]77, 2\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[12]\)`
// 386: `MOVW [$]77, 2\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[12]\)`
x[16*i+1] = 77
}
func idxInt32(x, y []int32, i int) {
var t int32
// amd64: `MOVL 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\), [A-Z]+[0-9]*`
// 386: `MOVL 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\), [A-Z]+[0-9]*`
t = x[i+1]
// amd64: `MOVL [A-Z]+[0-9]*, 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\)`
// 386: `MOVL [A-Z]+[0-9]*, 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\)`
y[i+1] = t
// amd64: `MOVL 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\), [A-Z]+[0-9]*`
t = x[2*i+1]
// amd64: `MOVL [A-Z]+[0-9]*, 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\)`
y[2*i+1] = t
// amd64: `MOVL 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[14]\), [A-Z]+[0-9]*`
// 386: `MOVL 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[14]\), [A-Z]+[0-9]*`
t = x[16*i+1]
// amd64: `MOVL [A-Z]+[0-9]*, 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[14]\)`
// 386: `MOVL [A-Z]+[0-9]*, 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[14]\)`
y[16*i+1] = t
// amd64: `MOVL [$]77, 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\)`
// 386: `MOVL [$]77, 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\)`
x[i+1] = 77
// amd64: `MOVL [$]77, 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[14]\)`
// 386: `MOVL [$]77, 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[14]\)`
x[16*i+1] = 77
}
func idxInt64(x, y []int64, i int) {
var t int64
// amd64: `MOVQ 8\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\), [A-Z]+[0-9]*`
t = x[i+1]
// amd64: `MOVQ [A-Z]+[0-9]*, 8\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\)`
y[i+1] = t
// amd64: `MOVQ 8\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[18]\), [A-Z]+[0-9]*`
t = x[16*i+1]
// amd64: `MOVQ [A-Z]+[0-9]*, 8\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[18]\)`
y[16*i+1] = t
// amd64: `MOVQ [$]77, 8\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\)`
x[i+1] = 77
// amd64: `MOVQ [$]77, 8\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[18]\)`
x[16*i+1] = 77
}
func idxFloat32(x, y []float32, i int) {
var t float32
// amd64: `MOVSS 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\), X[0-9]+`
// 386/sse2: `MOVSS 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\), X[0-9]+`
// arm64: `FMOVS \(R[0-9]*\)\(R[0-9]*<<2\), F[0-9]+`
t = x[i+1]
// amd64: `MOVSS X[0-9]+, 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\)`
// 386/sse2: `MOVSS X[0-9]+, 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\)`
// arm64: `FMOVS F[0-9]+, \(R[0-9]*\)\(R[0-9]*<<2\)`
y[i+1] = t
// amd64: `MOVSS 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[14]\), X[0-9]+`
// 386/sse2: `MOVSS 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[14]\), X[0-9]+`
t = x[16*i+1]
// amd64: `MOVSS X[0-9]+, 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[14]\)`
// 386/sse2: `MOVSS X[0-9]+, 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[14]\)`
y[16*i+1] = t
}
func idxFloat64(x, y []float64, i int) {
var t float64
// amd64: `MOVSD 8\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\), X[0-9]+`
// 386/sse2: `MOVSD 8\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\), X[0-9]+`
// arm64: `FMOVD \(R[0-9]*\)\(R[0-9]*<<3\), F[0-9]+`
t = x[i+1]
// amd64: `MOVSD X[0-9]+, 8\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\)`
// 386/sse2: `MOVSD X[0-9]+, 8\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\)`
// arm64: `FMOVD F[0-9]+, \(R[0-9]*\)\(R[0-9]*<<3\)`
y[i+1] = t
// amd64: `MOVSD 8\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[18]\), X[0-9]+`
// 386/sse2: `MOVSD 8\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[18]\), X[0-9]+`
t = x[16*i+1]
// amd64: `MOVSD X[0-9]+, 8\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[18]\)`
// 386/sse2: `MOVSD X[0-9]+, 8\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[18]\)`
y[16*i+1] = t
}
func idxLoadPlusOp32(x []int32, i int) int32 {
s := x[0]
// 386: `ADDL 4\([A-Z]+\)\([A-Z]+\*4\), [A-Z]+`
// amd64: `ADDL 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\), [A-Z]+[0-9]*`
s += x[i+1]
// 386: `SUBL 8\([A-Z]+\)\([A-Z]+\*4\), [A-Z]+`
// amd64: `SUBL 8\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\), [A-Z]+[0-9]*`
s -= x[i+2]
// 386: `IMULL 12\([A-Z]+\)\([A-Z]+\*4\), [A-Z]+`
s *= x[i+3]
// 386: `ANDL 16\([A-Z]+\)\([A-Z]+\*4\), [A-Z]+`
// amd64: `ANDL 16\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\), [A-Z]+[0-9]*`
s &= x[i+4]
// 386: `ORL 20\([A-Z]+\)\([A-Z]+\*4\), [A-Z]+`
// amd64: `ORL 20\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\), [A-Z]+[0-9]*`
s |= x[i+5]
// 386: `XORL 24\([A-Z]+\)\([A-Z]+\*4\), [A-Z]+`
// amd64: `XORL 24\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\), [A-Z]+[0-9]*`
s ^= x[i+6]
return s
}
func idxLoadPlusOp64(x []int64, i int) int64 {
s := x[0]
// amd64: `ADDQ 8\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\), [A-Z]+[0-9]*`
s += x[i+1]
// amd64: `SUBQ 16\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\), [A-Z]+[0-9]*`
s -= x[i+2]
// amd64: `ANDQ 24\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\), [A-Z]+[0-9]*`
s &= x[i+3]
// amd64: `ORQ 32\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\), [A-Z]+[0-9]*`
s |= x[i+4]
// amd64: `XORQ 40\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\), [A-Z]+[0-9]*`
s ^= x[i+5]
return s
}
func idxStorePlusOp32(x []int32, i int, v int32) {
// 386: `ADDL [A-Z]+, 4\([A-Z]+\)\([A-Z]+\*4\)`
// amd64: `ADDL [A-Z]+[0-9]*, 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\)`
x[i+1] += v
// 386: `SUBL [A-Z]+, 8\([A-Z]+\)\([A-Z]+\*4\)`
// amd64: `SUBL [A-Z]+[0-9]*, 8\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\)`
x[i+2] -= v
// 386: `ANDL [A-Z]+, 12\([A-Z]+\)\([A-Z]+\*4\)`
// amd64: `ANDL [A-Z]+[0-9]*, 12\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\)`
x[i+3] &= v
// 386: `ORL [A-Z]+, 16\([A-Z]+\)\([A-Z]+\*4\)`
// amd64: `ORL [A-Z]+[0-9]*, 16\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\)`
x[i+4] |= v
// 386: `XORL [A-Z]+, 20\([A-Z]+\)\([A-Z]+\*4\)`
// amd64: `XORL [A-Z]+[0-9]*, 20\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\)`
x[i+5] ^= v
// 386: `ADDL [$]77, 24\([A-Z]+\)\([A-Z]+\*4\)`
// amd64: `ADDL [$]77, 24\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\)`
x[i+6] += 77
// 386: `ANDL [$]77, 28\([A-Z]+\)\([A-Z]+\*4\)`
// amd64: `ANDL [$]77, 28\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\)`
x[i+7] &= 77
// 386: `ORL [$]77, 32\([A-Z]+\)\([A-Z]+\*4\)`
// amd64: `ORL [$]77, 32\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\)`
x[i+8] |= 77
// 386: `XORL [$]77, 36\([A-Z]+\)\([A-Z]+\*4\)`
// amd64: `XORL [$]77, 36\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\)`
x[i+9] ^= 77
}
func idxStorePlusOp64(x []int64, i int, v int64) {
// amd64: `ADDQ [A-Z]+[0-9]*, 8\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\)`
x[i+1] += v
// amd64: `SUBQ [A-Z]+[0-9]*, 16\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\)`
x[i+2] -= v
// amd64: `ANDQ [A-Z]+[0-9]*, 24\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\)`
x[i+3] &= v
// amd64: `ORQ [A-Z]+[0-9]*, 32\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\)`
x[i+4] |= v
// amd64: `XORQ [A-Z]+[0-9]*, 40\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\)`
x[i+5] ^= v
// amd64: `ADDQ [$]77, 48\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\)`
x[i+6] += 77
// amd64: `ANDQ [$]77, 56\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\)`
x[i+7] &= 77
// amd64: `ORQ [$]77, 64\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\)`
x[i+8] |= 77
// amd64: `XORQ [$]77, 72\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\)`
x[i+9] ^= 77
}
func idxCompare(i int) int {
// amd64: `MOVBLZX 1\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*1\), [A-Z]+[0-9]*`
if x8[i+1] < x8[0] {
return 0
}
// amd64: `MOVWLZX 2\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*2\), [A-Z]+[0-9]*`
if x16[i+1] < x16[0] {
return 0
}
// amd64: `MOVWLZX 2\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[12]\), [A-Z]+[0-9]*`
if x16[16*i+1] < x16[0] {
return 0
}
// amd64: `MOVL 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\), [A-Z]+[0-9]*`
if x32[i+1] < x32[0] {
return 0
}
// amd64: `MOVL 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[14]\), [A-Z]+[0-9]*`
if x32[16*i+1] < x32[0] {
return 0
}
// amd64: `MOVQ 8\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\), [A-Z]+[0-9]*`
if x64[i+1] < x64[0] {
return 0
}
// amd64: `MOVQ 8\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[18]\), [A-Z]+[0-9]*`
if x64[16*i+1] < x64[0] {
return 0
}
// amd64: `MOVBLZX 2\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*1\), [A-Z]+[0-9]*`
if x8[i+2] < 77 {
return 0
}
// amd64: `MOVWLZX 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*2\), [A-Z]+[0-9]*`
if x16[i+2] < 77 {
return 0
}
// amd64: `MOVWLZX 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[12]\), [A-Z]+[0-9]*`
if x16[16*i+2] < 77 {
return 0
}
// amd64: `MOVL 8\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\), [A-Z]+[0-9]*`
if x32[i+2] < 77 {
return 0
}
// amd64: `MOVL 8\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[14]\), [A-Z]+[0-9]*`
if x32[16*i+2] < 77 {
return 0
}
// amd64: `MOVQ 16\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\), [A-Z]+[0-9]*`
if x64[i+2] < 77 {
return 0
}
// amd64: `MOVQ 16\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*[18]\), [A-Z]+[0-9]*`
if x64[16*i+2] < 77 {
return 0
}
return 1
}
func idxFloatOps(a []float64, b []float32, i int) (float64, float32) {
c := float64(7)
// amd64: `ADDSD 8\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\), X[0-9]+`
c += a[i+1]
// amd64: `SUBSD 16\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\), X[0-9]+`
c -= a[i+2]
// amd64: `MULSD 24\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\), X[0-9]+`
c *= a[i+3]
// amd64: `DIVSD 32\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\), X[0-9]+`
c /= a[i+4]
d := float32(8)
// amd64: `ADDSS 4\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\), X[0-9]+`
d += b[i+1]
// amd64: `SUBSS 8\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\), X[0-9]+`
d -= b[i+2]
// amd64: `MULSS 12\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\), X[0-9]+`
d *= b[i+3]
// amd64: `DIVSS 16\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*4\), X[0-9]+`
d /= b[i+4]
return c, d
}
func storeTest(a []bool, v int, i int) {
// amd64: `BTL \$0,`,`SETCS 4\([A-Z]+[0-9]*\)`
a[4] = v&1 != 0
// amd64: `BTL \$1,`,`SETCS 3\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*1\)`
a[3+i] = v&2 != 0
}
func bitOps(p *[12]uint64) {
// amd64: `ORQ \$8, \(AX\)`
p[0] |= 8
// amd64: `ORQ \$1073741824, 8\(AX\)`
p[1] |= 1 << 30
// amd64: `BTSQ \$31, 16\(AX\)`
p[2] |= 1 << 31
// amd64: `BTSQ \$63, 24\(AX\)`
p[3] |= 1 << 63
// amd64: `ANDQ \$-9, 32\(AX\)`
p[4] &^= 8
// amd64: `ANDQ \$-1073741825, 40\(AX\)`
p[5] &^= 1 << 30
// amd64: `BTRQ \$31, 48\(AX\)`
p[6] &^= 1 << 31
// amd64: `BTRQ \$63, 56\(AX\)`
p[7] &^= 1 << 63
// amd64: `XORQ \$8, 64\(AX\)`
p[8] ^= 8
// amd64: `XORQ \$1073741824, 72\(AX\)`
p[9] ^= 1 << 30
// amd64: `BTCQ \$31, 80\(AX\)`
p[10] ^= 1 << 31
// amd64: `BTCQ \$63, 88\(AX\)`
p[11] ^= 1 << 63
}
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