qbit/go
1
0
Fork 0
mirror of https://github.com/golang/go synced 2024-11-23 09:40:04 -07:00
Code Releases Activity
c6bf9a8109
go/test/codegen/memcombine.go
Giovanni Bajo f02cc88f46 test: relax whitespaces matching in codegen tests 
The codegen testsuite uses regexp to parse the syntax, but it doesn't
have a way to tell line comments containing checks from line comments
containing English sentences. This means that any syntax error (that
is, non-matching regexp) is currently ignored and not reported.

There were some tests in memcombine.go that had an extraneous space
and were thus effectively disabled. It would be great if we could
report it as a syntax error, but for now we just punt and swallow the
spaces as a workaround, to avoid the same mistake again.

Fixes #25452

Change-Id: Ic7747a2278bc00adffd0c199ce40937acbbc9cf0
Reviewed-on: https://go-review.googlesource.com/113835
Run-TryBot: Giovanni Bajo <rasky@develer.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2018-09-02 10:31:37 +00:00

581 lines
18 KiB
Go
Raw Blame History

// 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 (
"encoding/binary"
"runtime"
)
var sink64 uint64
var sink32 uint32
var sink16 uint16
// ------------- //
// Loading //
// ------------- //
func load_le64(b []byte) {
// amd64:`MOVQ\s\(.*\),`
// s390x:`MOVDBR\s\(.*\),`
// arm64:`MOVD\s\(R[0-9]+\),`,-`MOV[BHW]`
// ppc64le:`MOVD\s`,-`MOV[BHW]Z`
sink64 = binary.LittleEndian.Uint64(b)
}
func load_le64_idx(b []byte, idx int) {
// amd64:`MOVQ\s\(.*\)\(.*\*1\),`
// s390x:`MOVDBR\s\(.*\)\(.*\*1\),`
// arm64:`MOVD\s\(R[0-9]+\)\(R[0-9]+\),`,-`MOV[BHW]`
// ppc64le:`MOVD\s`,-`MOV[BHW]Z\s`
sink64 = binary.LittleEndian.Uint64(b[idx:])
}
func load_le32(b []byte) {
// amd64:`MOVL\s\(.*\),` 386:`MOVL\s\(.*\),`
// s390x:`MOVWBR\s\(.*\),`
// arm64:`MOVWU\s\(R[0-9]+\),`,-`MOV[BH]`
// ppc64le:`MOVWZ\s`
sink32 = binary.LittleEndian.Uint32(b)
}
func load_le32_idx(b []byte, idx int) {
// amd64:`MOVL\s\(.*\)\(.*\*1\),` 386:`MOVL\s\(.*\)\(.*\*1\),`
// s390x:`MOVWBR\s\(.*\)\(.*\*1\),`
// arm64:`MOVWU\s\(R[0-9]+\)\(R[0-9]+\),`,-`MOV[BH]`
// ppc64le:`MOVWZ\s`
sink32 = binary.LittleEndian.Uint32(b[idx:])
}
func load_le16(b []byte) {
// amd64:`MOVWLZX\s\(.*\),`
// ppc64le:`MOVHZ\s`
// arm64:`MOVHU\s\(R[0-9]+\),`,-`MOVB`
sink16 = binary.LittleEndian.Uint16(b)
}
func load_le16_idx(b []byte, idx int) {
// amd64:`MOVWLZX\s\(.*\),`
// ppc64le:`MOVHZ\s`
// arm64:`MOVHU\s\(R[0-9]+\)\(R[0-9]+\),`,-`MOVB`
sink16 = binary.LittleEndian.Uint16(b[idx:])
}
func load_be64(b []byte) {
// amd64:`BSWAPQ`
// s390x:`MOVD\s\(.*\),`
// arm64:`REV`,`MOVD\s\(R[0-9]+\),`,-`MOV[BHW]`,-`REVW`,-`REV16W`
// ppc64le:`MOVDBR`
sink64 = binary.BigEndian.Uint64(b)
}
func load_be64_idx(b []byte, idx int) {
// amd64:`BSWAPQ`
// s390x:`MOVD\s\(.*\)\(.*\*1\),`
// arm64:`REV`,`MOVD\s\(R[0-9]+\)\(R[0-9]+\),`,-`MOV[WHB]`,-`REVW`,-`REV16W`
// ppc64le:`MOVDBR`
sink64 = binary.BigEndian.Uint64(b[idx:])
}
func load_be32(b []byte) {
// amd64:`BSWAPL`
// s390x:`MOVWZ\s\(.*\),`
// arm64:`REVW`,`MOVWU\s\(R[0-9]+\),`,-`MOV[BH]`,-`REV16W`
// ppc64le:`MOVWBR`
sink32 = binary.BigEndian.Uint32(b)
}
func load_be32_idx(b []byte, idx int) {
// amd64:`BSWAPL`
// s390x:`MOVWZ\s\(.*\)\(.*\*1\),`
// arm64:`REVW`,`MOVWU\s\(R[0-9]+\)\(R[0-9]+\),`,-`MOV[HB]`,-`REV16W`
// ppc64le:`MOVWBR`
sink32 = binary.BigEndian.Uint32(b[idx:])
}
func load_be16(b []byte) {
// amd64:`ROLW\s\$8`
// arm64:`REV16W`,`MOVHU\s\(R[0-9]+\),`,-`MOVB`
// ppc64le:`MOVHBR`
sink16 = binary.BigEndian.Uint16(b)
}
func load_be16_idx(b []byte, idx int) {
// amd64:`ROLW\s\$8`
// arm64:`REV16W`,`MOVHU\s\(R[0-9]+\)\(R[0-9]+\),`,-`MOVB`
// ppc64le:`MOVHBR`
sink16 = binary.BigEndian.Uint16(b[idx:])
}
func load_le_byte2_uint16(s []byte) uint16 {
// arm64:`MOVHU\t\(R[0-9]+\)`,-`ORR`,-`MOVB`
return uint16(s[0]) | uint16(s[1])<<8
}
func load_le_byte2_uint16_inv(s []byte) uint16 {
// arm64:`MOVHU\t\(R[0-9]+\)`,-`ORR`,-`MOVB`
return uint16(s[1])<<8 | uint16(s[0])
}
func load_le_byte4_uint32(s []byte) uint32 {
// arm64:`MOVWU\t\(R[0-9]+\)`,-`ORR`,-`MOV[BH]`
return uint32(s[0]) | uint32(s[1])<<8 | uint32(s[2])<<16 | uint32(s[3])<<24
}
func load_le_byte4_uint32_inv(s []byte) uint32 {
// arm64:`MOVWU\t\(R[0-9]+\)`,-`ORR`,-`MOV[BH]`
return uint32(s[3])<<24 | uint32(s[2])<<16 | uint32(s[1])<<8 | uint32(s[0])
}
func load_le_byte8_uint64(s []byte) uint64 {
// arm64:`MOVD\t\(R[0-9]+\)`,-`ORR`,-`MOV[BHW]`
return uint64(s[0]) | uint64(s[1])<<8 | uint64(s[2])<<16 | uint64(s[3])<<24 | uint64(s[4])<<32 | uint64(s[5])<<40 | uint64(s[6])<<48 | uint64(s[7])<<56
}
func load_le_byte8_uint64_inv(s []byte) uint64 {
// arm64:`MOVD\t\(R[0-9]+\)`,-`ORR`,-`MOV[BHW]`
return uint64(s[7])<<56 | uint64(s[6])<<48 | uint64(s[5])<<40 | uint64(s[4])<<32 | uint64(s[3])<<24 | uint64(s[2])<<16 | uint64(s[1])<<8 | uint64(s[0])
}
func load_be_byte2_uint16(s []byte) uint16 {
// arm64:`MOVHU\t\(R[0-9]+\)`,`REV16W`,-`ORR`,-`MOVB`
return uint16(s[0])<<8 | uint16(s[1])
}
func load_be_byte2_uint16_inv(s []byte) uint16 {
// arm64:`MOVHU\t\(R[0-9]+\)`,`REV16W`,-`ORR`,-`MOVB`
return uint16(s[1]) | uint16(s[0])<<8
}
func load_be_byte4_uint32(s []byte) uint32 {
// arm64:`MOVWU\t\(R[0-9]+\)`,`REVW`,-`ORR`,-`REV16W`,-`MOV[BH]`
return uint32(s[0])<<24 | uint32(s[1])<<16 | uint32(s[2])<<8 | uint32(s[3])
}
func load_be_byte4_uint32_inv(s []byte) uint32 {
// arm64:`MOVWU\t\(R[0-9]+\)`,`REVW`,-`ORR`,-`REV16W`,-`MOV[BH]`
return uint32(s[3]) | uint32(s[2])<<8 | uint32(s[1])<<16 | uint32(s[0])<<24
}
func load_be_byte8_uint64(s []byte) uint64 {
// arm64:`MOVD\t\(R[0-9]+\)`,`REV`,-`ORR`,-`REVW`,-`REV16W`,-`MOV[BHW]`
return uint64(s[0])<<56 | uint64(s[1])<<48 | uint64(s[2])<<40 | uint64(s[3])<<32 | uint64(s[4])<<24 | uint64(s[5])<<16 | uint64(s[6])<<8 | uint64(s[7])
}
func load_be_byte8_uint64_inv(s []byte) uint64 {
// arm64:`MOVD\t\(R[0-9]+\)`,`REV`,-`ORR`,-`REVW`,-`REV16W`,-`MOV[BHW]`
return uint64(s[7]) | uint64(s[6])<<8 | uint64(s[5])<<16 | uint64(s[4])<<24 | uint64(s[3])<<32 | uint64(s[2])<<40 | uint64(s[1])<<48 | uint64(s[0])<<56
}
func load_le_byte2_uint16_idx(s []byte, idx int) uint16 {
// arm64:`MOVHU\s\(R[0-9]+\)\(R[0-9]+\)`,-`ORR`,-`MOVB`
return uint16(s[idx]) | uint16(s[idx+1])<<8
}
func load_le_byte2_uint16_idx_inv(s []byte, idx int) uint16 {
// arm64:`MOVHU\s\(R[0-9]+\)\(R[0-9]+\)`,-`ORR`,-`MOVB`
return uint16(s[idx+1])<<8 | uint16(s[idx])
}
func load_le_byte4_uint32_idx(s []byte, idx int) uint32 {
// arm64:`MOVWU\s\(R[0-9]+\)\(R[0-9]+\)`,-`ORR`,-`MOV[BH]`
return uint32(s[idx]) | uint32(s[idx+1])<<8 | uint32(s[idx+2])<<16 | uint32(s[idx+3])<<24
}
func load_le_byte4_uint32_idx_inv(s []byte, idx int) uint32 {
// arm64:`MOVWU\s\(R[0-9]+\)\(R[0-9]+\)`,-`ORR`,-`MOV[BH]`
return uint32(s[idx+3])<<24 | uint32(s[idx+2])<<16 | uint32(s[idx+1])<<8 | uint32(s[idx])
}
func load_le_byte8_uint64_idx(s []byte, idx int) uint64 {
// arm64:`MOVD\s\(R[0-9]+\)\(R[0-9]+\)`,-`ORR`,-`MOV[BHW]`
return uint64(s[idx]) | uint64(s[idx+1])<<8 | uint64(s[idx+2])<<16 | uint64(s[idx+3])<<24 | uint64(s[idx+4])<<32 | uint64(s[idx+5])<<40 | uint64(s[idx+6])<<48 | uint64(s[idx+7])<<56
}
func load_le_byte8_uint64_idx_inv(s []byte, idx int) uint64 {
// arm64:`MOVD\s\(R[0-9]+\)\(R[0-9]+\)`,-`ORR`,-`MOV[BHW]`
return uint64(s[idx+7])<<56 | uint64(s[idx+6])<<48 | uint64(s[idx+5])<<40 | uint64(s[idx+4])<<32 | uint64(s[idx+3])<<24 | uint64(s[idx+2])<<16 | uint64(s[idx+1])<<8 | uint64(s[idx])
}
func load_be_byte2_uint16_idx(s []byte, idx int) uint16 {
// arm64:`MOVHU\s\(R[0-9]+\)\(R[0-9]+\)`,`REV16W`,-`ORR`,-`MOVB`
return uint16(s[idx])<<8 | uint16(s[idx+1])
}
func load_be_byte2_uint16_idx_inv(s []byte, idx int) uint16 {
// arm64:`MOVHU\s\(R[0-9]+\)\(R[0-9]+\)`,`REV16W`,-`ORR`,-`MOVB`
return uint16(s[idx+1]) | uint16(s[idx])<<8
}
func load_be_byte4_uint32_idx(s []byte, idx int) uint32 {
// arm64:`MOVWU\s\(R[0-9]+\)\(R[0-9]+\)`,`REVW`,-`ORR`,-`MOV[BH]`,-`REV16W`
return uint32(s[idx])<<24 | uint32(s[idx+1])<<16 | uint32(s[idx+2])<<8 | uint32(s[idx+3])
}
func load_be_byte8_uint64_idx(s []byte, idx int) uint64 {
// arm64:`MOVD\s\(R[0-9]+\)\(R[0-9]+\)`,`REV`,-`ORR`,-`MOV[BHW]`,-`REVW`,-`REV16W`
return uint64(s[idx])<<56 | uint64(s[idx+1])<<48 | uint64(s[idx+2])<<40 | uint64(s[idx+3])<<32 | uint64(s[idx+4])<<24 | uint64(s[idx+5])<<16 | uint64(s[idx+6])<<8 | uint64(s[idx+7])
}
func load_le_byte2_uint16_idx2(s []byte, idx int) uint16 {
// arm64:`MOVHU\s\(R[0-9]+\)\(R[0-9]+<<1\)`,-`ORR`,-`MOVB`
return uint16(s[idx<<1]) | uint16(s[(idx<<1)+1])<<8
}
func load_le_byte2_uint16_idx2_inv(s []byte, idx int) uint16 {
// arm64:`MOVHU\s\(R[0-9]+\)\(R[0-9]+<<1\)`,-`ORR`,-`MOVB`
return uint16(s[(idx<<1)+1])<<8 | uint16(s[idx<<1])
}
func load_le_byte4_uint32_idx4(s []byte, idx int) uint32 {
// arm64:`MOVWU\s\(R[0-9]+\)\(R[0-9]+<<2\)`,-`ORR`,-`MOV[BH]`
return uint32(s[idx<<2]) | uint32(s[(idx<<2)+1])<<8 | uint32(s[(idx<<2)+2])<<16 | uint32(s[(idx<<2)+3])<<24
}
func load_le_byte4_uint32_idx4_inv(s []byte, idx int) uint32 {
// arm64:`MOVWU\s\(R[0-9]+\)\(R[0-9]+<<2\)`,-`ORR`,-`MOV[BH]`
return uint32(s[(idx<<2)+3])<<24 | uint32(s[(idx<<2)+2])<<16 | uint32(s[(idx<<2)+1])<<8 | uint32(s[idx<<2])
}
func load_le_byte8_uint64_idx8(s []byte, idx int) uint64 {
// arm64:`MOVD\s\(R[0-9]+\)\(R[0-9]+<<3\)`,-`ORR`,-`MOV[BHW]`
return uint64(s[idx<<3]) | uint64(s[(idx<<3)+1])<<8 | uint64(s[(idx<<3)+2])<<16 | uint64(s[(idx<<3)+3])<<24 | uint64(s[(idx<<3)+4])<<32 | uint64(s[(idx<<3)+5])<<40 | uint64(s[(idx<<3)+6])<<48 | uint64(s[(idx<<3)+7])<<56
}
func load_le_byte8_uint64_idx8_inv(s []byte, idx int) uint64 {
// arm64:`MOVD\s\(R[0-9]+\)\(R[0-9]+<<3\)`,-`ORR`,-`MOV[BHW]`
return uint64(s[(idx<<3)+7])<<56 | uint64(s[(idx<<3)+6])<<48 | uint64(s[(idx<<3)+5])<<40 | uint64(s[(idx<<3)+4])<<32 | uint64(s[(idx<<3)+3])<<24 | uint64(s[(idx<<3)+2])<<16 | uint64(s[(idx<<3)+1])<<8 | uint64(s[idx<<3])
}
func load_be_byte2_uint16_idx2(s []byte, idx int) uint16 {
// arm64:`MOVHU\s\(R[0-9]+\)\(R[0-9]+<<1\)`,`REV16W`,-`ORR`,-`MOVB`
return uint16(s[idx<<1])<<8 | uint16(s[(idx<<1)+1])
}
func load_be_byte2_uint16_idx2_inv(s []byte, idx int) uint16 {
// arm64:`MOVHU\s\(R[0-9]+\)\(R[0-9]+<<1\)`,`REV16W`,-`ORR`,-`MOVB`
return uint16(s[(idx<<1)+1]) | uint16(s[idx<<1])<<8
}
func load_be_byte4_uint32_idx4(s []byte, idx int) uint32 {
// arm64:`MOVWU\s\(R[0-9]+\)\(R[0-9]+<<2\)`,`REVW`,-`ORR`,-`MOV[BH]`,-`REV16W`
return uint32(s[idx<<2])<<24 | uint32(s[(idx<<2)+1])<<16 | uint32(s[(idx<<2)+2])<<8 | uint32(s[(idx<<2)+3])
}
func load_be_byte8_uint64_idx8(s []byte, idx int) uint64 {
// arm64:`MOVD\s\(R[0-9]+\)\(R[0-9]+<<3\)`,`REV`,-`ORR`,-`MOV[BHW]`,-`REVW`,-`REV16W`
return uint64(s[idx<<3])<<56 | uint64(s[(idx<<3)+1])<<48 | uint64(s[(idx<<3)+2])<<40 | uint64(s[(idx<<3)+3])<<32 | uint64(s[(idx<<3)+4])<<24 | uint64(s[(idx<<3)+5])<<16 | uint64(s[(idx<<3)+6])<<8 | uint64(s[(idx<<3)+7])
}
// Check load combining across function calls.
func fcall_byte(a, b byte) (byte, byte) {
return fcall_byte(fcall_byte(a, b)) // amd64:`MOVW`
}
func fcall_uint16(a, b uint16) (uint16, uint16) {
return fcall_uint16(fcall_uint16(a, b)) // amd64:`MOVL`
}
func fcall_uint32(a, b uint32) (uint32, uint32) {
return fcall_uint32(fcall_uint32(a, b)) // amd64:`MOVQ`
}
// We want to merge load+op in the first function, but not in the
// second. See Issue 19595.
func load_op_merge(p, q *int) {
x := *p
*q += x // amd64:`ADDQ\t\(`
}
func load_op_no_merge(p, q *int) {
x := *p
for i := 0; i < 10; i++ {
*q += x // amd64:`ADDQ\t[A-Z]`
}
}
// Make sure offsets are folded into loads and stores.
func offsets_fold(_, a [20]byte) (b [20]byte) {
// arm64:`MOVD\t""\.a\+[0-9]+\(FP\), R[0-9]+`,`MOVD\tR[0-9]+, ""\.b\+[0-9]+\(FP\)`
b = a
return
}
// Make sure we don't put pointers in SSE registers across safe
// points.
func safe_point(p, q *[2]*int) {
a, b := p[0], p[1] // amd64:-`MOVUPS`
runtime.GC()
q[0], q[1] = a, b // amd64:-`MOVUPS`
}
// ------------- //
// Storing //
// ------------- //
func store_le64(b []byte) {
// amd64:`MOVQ\s.*\(.*\)$`,-`SHR.`
// arm64:`MOVD`,-`MOV[WBH]`
// ppc64le:`MOVD\s`,-`MOV[BHW]\s`
binary.LittleEndian.PutUint64(b, sink64)
}
func store_le64_idx(b []byte, idx int) {
// amd64:`MOVQ\s.*\(.*\)\(.*\*1\)$`,-`SHR.`
// arm64:`MOVD\sR[0-9]+,\s\(R[0-9]+\)\(R[0-9]+\)`,-`MOV[BHW]`
// ppc64le:`MOVD\s`,-`MOV[BHW]\s`
binary.LittleEndian.PutUint64(b[idx:], sink64)
}
func store_le32(b []byte) {
// amd64:`MOVL\s`
// arm64:`MOVW`,-`MOV[BH]`
// ppc64le:`MOVW\s`
binary.LittleEndian.PutUint32(b, sink32)
}
func store_le32_idx(b []byte, idx int) {
// amd64:`MOVL\s`
// arm64:`MOVW\sR[0-9]+,\s\(R[0-9]+\)\(R[0-9]+\)`,-`MOV[BH]`
// ppc64le:`MOVW\s`
binary.LittleEndian.PutUint32(b[idx:], sink32)
}
func store_le16(b []byte) {
// amd64:`MOVW\s`
// arm64:`MOVH`,-`MOVB`
// ppc64le:`MOVH\s`
binary.LittleEndian.PutUint16(b, sink16)
}
func store_le16_idx(b []byte, idx int) {
// amd64:`MOVW\s`
// arm64:`MOVH\sR[0-9]+,\s\(R[0-9]+\)\(R[0-9]+\)`,-`MOVB`
// ppc64le:`MOVH\s`
binary.LittleEndian.PutUint16(b[idx:], sink16)
}
func store_be64(b []byte) {
// amd64:`BSWAPQ`,-`SHR.`
// arm64:`MOVD`,`REV`,-`MOV[WBH]`,-`REVW`,-`REV16W`
// ppc64le:`MOVDBR`
binary.BigEndian.PutUint64(b, sink64)
}
func store_be64_idx(b []byte, idx int) {
// amd64:`BSWAPQ`,-`SHR.`
// arm64:`REV`,`MOVD\sR[0-9]+,\s\(R[0-9]+\)\(R[0-9]+\)`,-`MOV[BHW]`,-`REV16W`,-`REVW`
// ppc64le:`MOVDBR`
binary.BigEndian.PutUint64(b[idx:], sink64)
}
func store_be32(b []byte) {
// amd64:`BSWAPL`,-`SHR.`
// arm64:`MOVW`,`REVW`,-`MOV[BH]`,-`REV16W`
// ppc64le:`MOVWBR`
binary.BigEndian.PutUint32(b, sink32)
}
func store_be32_idx(b []byte, idx int) {
// amd64:`BSWAPL`,-`SHR.`
// arm64:`REVW`,`MOVW\sR[0-9]+,\s\(R[0-9]+\)\(R[0-9]+\)`,-`MOV[BH]`,-`REV16W`
// ppc64le:`MOVWBR`
binary.BigEndian.PutUint32(b[idx:], sink32)
}
func store_be16(b []byte) {
// amd64:`ROLW\s\$8`,-`SHR.`
// arm64:`MOVH`,`REV16W`,-`MOVB`
// ppc64le:`MOVHBR`
binary.BigEndian.PutUint16(b, sink16)
}
func store_be16_idx(b []byte, idx int) {
// amd64:`ROLW\s\$8`,-`SHR.`
// arm64:`MOVH\sR[0-9]+,\s\(R[0-9]+\)\(R[0-9]+\)`,`REV16W`,-`MOVB`
// ppc64le:`MOVHBR`
binary.BigEndian.PutUint16(b[idx:], sink16)
}
func store_le_byte_2(b []byte, val uint16) {
_ = b[2]
// arm64:`MOVH\sR[0-9]+,\s1\(R[0-9]+\)`,-`MOVB`
b[1], b[2] = byte(val), byte(val>>8)
}
func store_le_byte_4(b []byte, val uint32) {
_ = b[4]
// arm64:`MOVW\sR[0-9]+,\s1\(R[0-9]+\)`,-`MOVB`,-`MOVH`
b[1], b[2], b[3], b[4] = byte(val), byte(val>>8), byte(val>>16), byte(val>>24)
}
func store_le_byte_8(b []byte, val uint64) {
_ = b[8]
// arm64:`MOVD\sR[0-9]+,\s1\(R[0-9]+\)`,-`MOVB`,-`MOVH`,-`MOVW`
b[1], b[2], b[3], b[4], b[5], b[6], b[7], b[8] = byte(val), byte(val>>8), byte(val>>16), byte(val>>24), byte(val>>32), byte(val>>40), byte(val>>48), byte(val>>56)
}
func store_be_byte_2(b []byte, val uint16) {
_ = b[2]
// arm64:`REV16W`,`MOVH\sR[0-9]+,\s1\(R[0-9]+\)`,-`MOVB`
b[1], b[2] = byte(val>>8), byte(val)
}
func store_be_byte_4(b []byte, val uint32) {
_ = b[4]
// arm64:`REVW`,`MOVW\sR[0-9]+,\s1\(R[0-9]+\)`,-`MOVB`,-`MOVH`,-`REV16W`
b[1], b[2], b[3], b[4] = byte(val>>24), byte(val>>16), byte(val>>8), byte(val)
}
func store_be_byte_8(b []byte, val uint64) {
_ = b[8]
// arm64:`REV`,`MOVD\sR[0-9]+,\s1\(R[0-9]+\)`,-`MOVB`,-`MOVH`,-`MOVW`,-`REV16W`,-`REVW`
b[1], b[2], b[3], b[4], b[5], b[6], b[7], b[8] = byte(val>>56), byte(val>>48), byte(val>>40), byte(val>>32), byte(val>>24), byte(val>>16), byte(val>>8), byte(val)
}
func store_le_byte_2_idx(b []byte, idx int, val uint16) {
_, _ = b[idx+0], b[idx+1]
// arm64:`MOVH\sR[0-9]+,\s\(R[0-9]+\)\(R[0-9]+\)`,-`MOVB`
b[idx+1], b[idx+0] = byte(val>>8), byte(val)
}
func store_le_byte_4_idx(b []byte, idx int, val uint32) {
_, _, _, _ = b[idx+0], b[idx+1], b[idx+2], b[idx+3]
// arm64:`MOVW\sR[0-9]+,\s\(R[0-9]+\)\(R[0-9]+\)`,-`MOVB`,-`MOVH`
b[idx+3], b[idx+2], b[idx+1], b[idx+0] = byte(val>>24), byte(val>>16), byte(val>>8), byte(val)
}
func store_be_byte_2_idx(b []byte, idx int, val uint16) {
_, _ = b[idx+0], b[idx+1]
// arm64:`REV16W`,`MOVH\sR[0-9]+,\s\(R[0-9]+\)\(R[0-9]+\)`,-`MOVB`
b[idx+0], b[idx+1] = byte(val>>8), byte(val)
}
func store_be_byte_4_idx(b []byte, idx int, val uint32) {
_, _, _, _ = b[idx+0], b[idx+1], b[idx+2], b[idx+3]
// arm64:`REVW`,`MOVW\sR[0-9]+,\s\(R[0-9]+\)\(R[0-9]+\)`,-`MOVB`,-`MOVH`,-`REV16W`
b[idx+0], b[idx+1], b[idx+2], b[idx+3] = byte(val>>24), byte(val>>16), byte(val>>8), byte(val)
}
func store_be_byte_2_idx2(b []byte, idx int, val uint16) {
_, _ = b[(idx<<1)+0], b[(idx<<1)+1]
// arm64:`REV16W`,`MOVH\sR[0-9]+,\s\(R[0-9]+\)\(R[0-9]+<<1\)`,-`MOVB`
b[(idx<<1)+0], b[(idx<<1)+1] = byte(val>>8), byte(val)
}
// ------------- //
// Zeroing //
// ------------- //
// Check that zero stores are combined into larger stores
func zero_byte_2(b1, b2 []byte) {
// bounds checks to guarantee safety of writes below
_, _ = b1[1], b2[1]
b1[0], b1[1] = 0, 0 // arm64:"MOVH\tZR",-"MOVB"
b2[1], b2[0] = 0, 0 // arm64:"MOVH\tZR",-"MOVB"
}
func zero_byte_4(b1, b2 []byte) {
_, _ = b1[3], b2[3]
b1[0], b1[1], b1[2], b1[3] = 0, 0, 0, 0 // arm64:"MOVW\tZR",-"MOVB",-"MOVH"
b2[2], b2[3], b2[1], b2[0] = 0, 0, 0, 0 // arm64:"MOVW\tZR",-"MOVB",-"MOVH"
}
func zero_byte_8(b []byte) {
_ = b[7]
b[0], b[1], b[2], b[3] = 0, 0, 0, 0
b[4], b[5], b[6], b[7] = 0, 0, 0, 0 // arm64:"MOVD\tZR",-"MOVB",-"MOVH",-"MOVW"
}
func zero_byte_16(b []byte) {
_ = b[15]
b[0], b[1], b[2], b[3] = 0, 0, 0, 0
b[4], b[5], b[6], b[7] = 0, 0, 0, 0
b[8], b[9], b[10], b[11] = 0, 0, 0, 0
b[12], b[13], b[14], b[15] = 0, 0, 0, 0 // arm64:"STP",-"MOVB",-"MOVH",-"MOVW"
}
/* TODO: enable them when corresponding optimization are implemented
func zero_byte_4_idx(b []byte, idx int) {
// arm64(DISABLED): `MOVW\sZR,\s\(R[0-9]+\)\(R[0-9]+<<2\)`,-`MOV[BH]`
b[(idx<<2)+0] = 0
b[(idx<<2)+1] = 0
b[(idx<<2)+2] = 0
b[(idx<<2)+3] = 0
}
func zero_byte_8_idx(b []byte, idx int) {
// arm64(DISABLED): `MOVD\sZR,\s\(R[0-9]+\)\(R[0-9]+<<3\)`,-`MOV[BHW]`
b[(idx<<3)+0] = 0
b[(idx<<3)+1] = 0
b[(idx<<3)+2] = 0
b[(idx<<3)+3] = 0
b[(idx<<3)+4] = 0
b[(idx<<3)+5] = 0
b[(idx<<3)+6] = 0
b[(idx<<3)+7] = 0
}
*/
func zero_byte_30(a *[30]byte) {
*a = [30]byte{} // arm64:"STP",-"MOVB",-"MOVH",-"MOVW"
}
func zero_byte_39(a *[39]byte) {
*a = [39]byte{} // arm64:"MOVD",-"MOVB",-"MOVH",-"MOVW"
}
func zero_byte_2_idx(b []byte, idx int) {
_, _ = b[idx+0], b[idx+1]
// arm64:`MOVH\sZR,\s\(R[0-9]+\)\(R[0-9]+\)`,-`MOVB`
b[idx+0], b[idx+1] = 0, 0
}
func zero_byte_2_idx2(b []byte, idx int) {
_, _ = b[(idx<<1)+0], b[(idx<<1)+1]
// arm64:`MOVH\sZR,\s\(R[0-9]+\)\(R[0-9]+<<1\)`,-`MOVB`
b[(idx<<1)+0], b[(idx<<1)+1] = 0, 0
}
func zero_uint16_2(h1, h2 []uint16) {
_, _ = h1[1], h2[1]
h1[0], h1[1] = 0, 0 // arm64:"MOVW\tZR",-"MOVB",-"MOVH"
h2[1], h2[0] = 0, 0 // arm64:"MOVW\tZR",-"MOVB",-"MOVH"
}
func zero_uint16_4(h1, h2 []uint16) {
_, _ = h1[3], h2[3]
h1[0], h1[1], h1[2], h1[3] = 0, 0, 0, 0 // arm64:"MOVD\tZR",-"MOVB",-"MOVH",-"MOVW"
h2[2], h2[3], h2[1], h2[0] = 0, 0, 0, 0 // arm64:"MOVD\tZR",-"MOVB",-"MOVH",-"MOVW"
}
func zero_uint16_8(h []uint16) {
_ = h[7]
h[0], h[1], h[2], h[3] = 0, 0, 0, 0
h[4], h[5], h[6], h[7] = 0, 0, 0, 0 // arm64:"STP",-"MOVB",-"MOVH"
}
func zero_uint32_2(w1, w2 []uint32) {
_, _ = w1[1], w2[1]
w1[0], w1[1] = 0, 0 // arm64:"MOVD\tZR",-"MOVB",-"MOVH",-"MOVW"
w2[1], w2[0] = 0, 0 // arm64:"MOVD\tZR",-"MOVB",-"MOVH",-"MOVW"
}
func zero_uint32_4(w1, w2 []uint32) {
_, _ = w1[3], w2[3]
w1[0], w1[1], w1[2], w1[3] = 0, 0, 0, 0 // arm64:"STP",-"MOVB",-"MOVH"
w2[2], w2[3], w2[1], w2[0] = 0, 0, 0, 0 // arm64:"STP",-"MOVB",-"MOVH"
}
func zero_uint64_2(d1, d2 []uint64) {
_, _ = d1[1], d2[1]
d1[0], d1[1] = 0, 0 // arm64:"STP",-"MOVB",-"MOVH"
d2[1], d2[0] = 0, 0 // arm64:"STP",-"MOVB",-"MOVH"
}
View Git Blame Copy Permalink