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ARM64 supports efficient instructions which combine shift, addition, load/store together. Such as "MOVD (R0)(R1<<3), R2" and "MOVWU R6, (R4)(R1<<2)". This CL optimizes the compiler to emit such efficient instuctions. And below is some test data. 1. binary size before/after binary size change pkg/linux_arm64 +80.1KB pkg/tool/linux_arm64 +121.9KB go -4.3KB gofmt -64KB 2. go1 benchmark There is big improvement for the test case Fannkuch11, and slight improvement for sme others, excluding noise. name old time/op new time/op delta BinaryTree17-4 43.9s ± 2% 44.0s ± 2% ~ (p=0.820 n=30+30) Fannkuch11-4 30.6s ± 2% 24.5s ± 3% -19.93% (p=0.000 n=25+30) FmtFprintfEmpty-4 500ns ± 0% 499ns ± 0% -0.11% (p=0.000 n=23+25) FmtFprintfString-4 1.03µs ± 0% 1.04µs ± 3% ~ (p=0.065 n=29+30) FmtFprintfInt-4 1.15µs ± 3% 1.15µs ± 4% -0.56% (p=0.000 n=30+30) FmtFprintfIntInt-4 1.80µs ± 5% 1.82µs ± 0% ~ (p=0.094 n=30+24) FmtFprintfPrefixedInt-4 2.17µs ± 5% 2.20µs ± 0% ~ (p=0.100 n=30+23) FmtFprintfFloat-4 3.08µs ± 3% 3.09µs ± 4% ~ (p=0.123 n=30+30) FmtManyArgs-4 7.41µs ± 4% 7.17µs ± 1% -3.26% (p=0.000 n=30+23) GobDecode-4 93.7ms ± 0% 94.7ms ± 4% ~ (p=0.685 n=24+30) GobEncode-4 78.7ms ± 7% 77.1ms ± 0% ~ (p=0.729 n=30+23) Gzip-4 4.01s ± 0% 3.97s ± 5% -1.11% (p=0.037 n=24+30) Gunzip-4 389ms ± 4% 384ms ± 0% ~ (p=0.155 n=30+23) HTTPClientServer-4 536µs ± 1% 537µs ± 1% ~ (p=0.236 n=30+30) JSONEncode-4 179ms ± 1% 182ms ± 6% ~ (p=0.763 n=24+30) JSONDecode-4 843ms ± 0% 839ms ± 6% -0.42% (p=0.003 n=25+30) Mandelbrot200-4 46.5ms ± 0% 46.5ms ± 0% +0.02% (p=0.000 n=26+26) GoParse-4 44.3ms ± 6% 43.3ms ± 0% ~ (p=0.067 n=30+27) RegexpMatchEasy0_32-4 1.07µs ± 7% 1.07µs ± 4% ~ (p=0.835 n=30+30) RegexpMatchEasy0_1K-4 5.51µs ± 0% 5.49µs ± 0% -0.35% (p=0.000 n=23+26) RegexpMatchEasy1_32-4 1.01µs ± 0% 1.02µs ± 4% +0.96% (p=0.014 n=24+30) RegexpMatchEasy1_1K-4 7.43µs ± 0% 7.18µs ± 0% -3.41% (p=0.000 n=23+24) RegexpMatchMedium_32-4 1.78µs ± 0% 1.81µs ± 4% +1.47% (p=0.012 n=23+30) RegexpMatchMedium_1K-4 547µs ± 1% 542µs ± 3% -0.90% (p=0.003 n=24+30) RegexpMatchHard_32-4 30.4µs ± 0% 29.7µs ± 0% -2.15% (p=0.000 n=19+23) RegexpMatchHard_1K-4 913µs ± 0% 915µs ± 6% +0.25% (p=0.012 n=24+30) Revcomp-4 6.32s ± 1% 6.42s ± 4% ~ (p=0.342 n=25+30) Template-4 868ms ± 6% 878ms ± 6% +1.15% (p=0.000 n=30+30) TimeParse-4 4.57µs ± 4% 4.59µs ± 3% +0.65% (p=0.010 n=29+30) TimeFormat-4 4.51µs ± 0% 4.50µs ± 0% -0.27% (p=0.000 n=27+24) [Geo mean] 695µs 689µs -0.92% name old speed new speed delta GobDecode-4 8.19MB/s ± 0% 8.12MB/s ± 4% ~ (p=0.680 n=24+30) GobEncode-4 9.76MB/s ± 7% 9.96MB/s ± 0% ~ (p=0.616 n=30+23) Gzip-4 4.84MB/s ± 0% 4.89MB/s ± 4% +1.16% (p=0.030 n=24+30) Gunzip-4 49.9MB/s ± 4% 50.6MB/s ± 0% ~ (p=0.162 n=30+23) JSONEncode-4 10.9MB/s ± 1% 10.7MB/s ± 6% ~ (p=0.575 n=24+30) JSONDecode-4 2.30MB/s ± 0% 2.32MB/s ± 5% +0.72% (p=0.003 n=22+30) GoParse-4 1.31MB/s ± 6% 1.34MB/s ± 0% +2.26% (p=0.002 n=30+27) RegexpMatchEasy0_32-4 30.0MB/s ± 6% 30.0MB/s ± 4% ~ (p=1.000 n=30+30) RegexpMatchEasy0_1K-4 186MB/s ± 0% 187MB/s ± 0% +0.35% (p=0.000 n=23+26) RegexpMatchEasy1_32-4 31.8MB/s ± 0% 31.5MB/s ± 4% -0.92% (p=0.012 n=25+30) RegexpMatchEasy1_1K-4 138MB/s ± 0% 143MB/s ± 0% +3.53% (p=0.000 n=23+24) RegexpMatchMedium_32-4 560kB/s ± 0% 553kB/s ± 4% -1.19% (p=0.005 n=23+30) RegexpMatchMedium_1K-4 1.87MB/s ± 0% 1.89MB/s ± 3% +1.04% (p=0.002 n=24+30) RegexpMatchHard_32-4 1.05MB/s ± 0% 1.08MB/s ± 0% +2.40% (p=0.000 n=19+23) RegexpMatchHard_1K-4 1.12MB/s ± 0% 1.12MB/s ± 5% +0.12% (p=0.006 n=25+30) Revcomp-4 40.2MB/s ± 1% 39.6MB/s ± 4% ~ (p=0.242 n=25+30) Template-4 2.24MB/s ± 6% 2.21MB/s ± 6% -1.15% (p=0.000 n=30+30) [Geo mean] 7.87MB/s 7.91MB/s +0.44% Change-Id: If374cb7abf83537aa0a176f73c0f736f7800db03 Reviewed-on: https://go-review.googlesource.com/108735 Reviewed-by: Cherry Zhang <cherryyz@google.com> Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
355 lines
9.4 KiB
Go
355 lines
9.4 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 (
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"encoding/binary"
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"runtime"
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)
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var sink64 uint64
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var sink32 uint32
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var sink16 uint16
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// ------------- //
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// Loading //
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// ------------- //
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func load_le64(b []byte) {
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// amd64:`MOVQ\s\(.*\),`
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// s390x:`MOVDBR\s\(.*\),`
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// arm64:`MOVD\s\(R[0-9]+\),`,-`MOV[BHW]`
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// ppc64le:`MOVD\s`,-`MOV[BHW]Z`
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sink64 = binary.LittleEndian.Uint64(b)
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}
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func load_le64_idx(b []byte, idx int) {
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// amd64:`MOVQ\s\(.*\)\(.*\*1\),`
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// s390x:`MOVDBR\s\(.*\)\(.*\*1\),`
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// arm64:`MOVD\s\(R[0-9]+\)\(R[0-9]+\),`,-`MOV[BHW]`
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// ppc64le:`MOVD\s`,-`MOV[BHW]Z\s`
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sink64 = binary.LittleEndian.Uint64(b[idx:])
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}
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func load_le32(b []byte) {
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// amd64:`MOVL\s\(.*\),` 386:`MOVL\s\(.*\),`
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// s390x:`MOVWBR\s\(.*\),`
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// arm64:`MOVWU\s\(R[0-9]+\),`,-`MOV[BH]`
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// ppc64le:`MOVWZ\s`
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sink32 = binary.LittleEndian.Uint32(b)
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}
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func load_le32_idx(b []byte, idx int) {
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// amd64:`MOVL\s\(.*\)\(.*\*1\),` 386:`MOVL\s\(.*\)\(.*\*1\),`
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// s390x:`MOVWBR\s\(.*\)\(.*\*1\),`
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// arm64:`MOVWU\s\(R[0-9]+\)\(R[0-9]+\),`,-`MOV[BH]`
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// ppc64le:`MOVWZ\s`
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sink32 = binary.LittleEndian.Uint32(b[idx:])
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}
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func load_le16(b []byte) {
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// amd64:`MOVWLZX\s\(.*\),`
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// ppc64le:`MOVHZ\s`
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// arm64:`MOVHU\s\(R[0-9]+\),`,-`MOVB`
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sink16 = binary.LittleEndian.Uint16(b)
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}
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func load_le16_idx(b []byte, idx int) {
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// amd64:`MOVWLZX\s\(.*\),`
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// ppc64le:`MOVHZ\s`
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// arm64:`MOVHU\s\(R[0-9]+\)\(R[0-9]+\),`,-`MOVB`
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sink16 = binary.LittleEndian.Uint16(b[idx:])
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}
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func load_be64(b []byte) {
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// amd64:`BSWAPQ`
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// s390x:`MOVD\s\(.*\),`
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// arm64:`REV`,`MOVD\s\(R[0-9]+\),`,-`MOV[BHW]`,-`REVW`,-`REV16W`
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sink64 = binary.BigEndian.Uint64(b)
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}
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func load_be64_idx(b []byte, idx int) {
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// amd64:`BSWAPQ`
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// s390x:`MOVD\s\(.*\)\(.*\*1\),`
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// arm64:`REV`,`MOVD\s\(R[0-9]+\)\(R[0-9]+\),`,-`MOV[WHB]`,-`REVW`,-`REV16W`
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sink64 = binary.BigEndian.Uint64(b[idx:])
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}
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func load_be32(b []byte) {
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// amd64:`BSWAPL`
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// s390x:`MOVWZ\s\(.*\),`
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// arm64:`REVW`,`MOVWU\s\(R[0-9]+\),`,-`MOV[BH]`,-`REV16W`
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sink32 = binary.BigEndian.Uint32(b)
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}
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func load_be32_idx(b []byte, idx int) {
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// amd64:`BSWAPL`
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// s390x:`MOVWZ\s\(.*\)\(.*\*1\),`
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// arm64:`REVW`,`MOVWU\s\(R[0-9]+\)\(R[0-9]+\),`,-`MOV[HB]`,-`REV16W`
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sink32 = binary.BigEndian.Uint32(b[idx:])
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}
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func load_be16(b []byte) {
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// amd64:`ROLW\s\$8`
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// arm64: `REV16W`,`MOVHU\s\(R[0-9]+\),`,-`MOVB`
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sink16 = binary.BigEndian.Uint16(b)
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}
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func load_be16_idx(b []byte, idx int) {
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// amd64:`ROLW\s\$8`
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// arm64: `REV16W`,`MOVHU\s\(R[0-9]+\)\(R[0-9]+\),`,-`MOVB`
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sink16 = binary.BigEndian.Uint16(b[idx:])
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}
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func load_byte2_uint16(s []byte) uint16 {
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// arm64:`MOVHU\t\(R[0-9]+\)`,-`ORR\tR[0-9]+<<8`
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return uint16(s[0]) | uint16(s[1])<<8
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}
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func load_byte2_uint16_idx(s []byte, idx int) uint16 {
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// arm64:`MOVHU\s\(R[0-9]+\)\(R[0-9]+<<1\)`,-`ORR`,-`MOVB`
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return uint16(s[idx<<1]) | uint16(s[(idx<<1)+1])<<8
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}
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func load_byte4_uint32_idx(s []byte, idx int) uint32 {
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// arm64:`MOVWU\s\(R[0-9]+\)\(R[0-9]+<<2\)`,-`ORR`,-`MOV[BH]`
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return uint32(s[idx<<2]) | uint32(s[(idx<<2)+1])<<8 | uint32(s[(idx<<2)+2])<<16 | uint32(s[(idx<<2)+3])<<24
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}
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func load_byte8_uint64_idx(s []byte, idx int) uint64 {
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// arm64:`MOVD\s\(R[0-9]+\)\(R[0-9]+<<3\)`,-`ORR`,-`MOV[BHW]`
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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
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}
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// Check load combining across function calls.
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func fcall_byte(a, b byte) (byte, byte) {
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return fcall_byte(fcall_byte(a, b)) // amd64:`MOVW`
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}
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func fcall_uint16(a, b uint16) (uint16, uint16) {
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return fcall_uint16(fcall_uint16(a, b)) // amd64:`MOVL`
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}
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func fcall_uint32(a, b uint32) (uint32, uint32) {
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return fcall_uint32(fcall_uint32(a, b)) // amd64:`MOVQ`
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}
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// We want to merge load+op in the first function, but not in the
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// second. See Issue 19595.
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func load_op_merge(p, q *int) {
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x := *p
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*q += x // amd64:`ADDQ\t\(`
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}
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func load_op_no_merge(p, q *int) {
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x := *p
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for i := 0; i < 10; i++ {
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*q += x // amd64:`ADDQ\t[A-Z]`
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}
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}
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// Make sure offsets are folded into loads and stores.
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func offsets_fold(_, a [20]byte) (b [20]byte) {
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// arm64:`MOVD\t""\.a\+[0-9]+\(FP\), R[0-9]+`,`MOVD\tR[0-9]+, ""\.b\+[0-9]+\(FP\)`
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b = a
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return
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}
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// Make sure we don't put pointers in SSE registers across safe
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// points.
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func safe_point(p, q *[2]*int) {
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a, b := p[0], p[1] // amd64:-`MOVUPS`
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runtime.GC()
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q[0], q[1] = a, b // amd64:-`MOVUPS`
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}
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// ------------- //
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// Storing //
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// ------------- //
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func store_le64(b []byte) {
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// amd64:`MOVQ\s.*\(.*\)$`,-`SHR.`
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// arm64:`MOVD`,-`MOV[WBH]`
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// ppc64le:`MOVD\s`,-`MOV[BHW]\s`
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binary.LittleEndian.PutUint64(b, sink64)
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}
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func store_le64_idx(b []byte, idx int) {
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// amd64:`MOVQ\s.*\(.*\)\(.*\*1\)$`,-`SHR.`
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// arm64:`MOVD\sR[0-9]+,\s\(R[0-9]+\)\(R[0-9]+\)`,-`MOV[BHW]`
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// ppc64le:`MOVD\s`,-`MOV[BHW]\s`
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binary.LittleEndian.PutUint64(b[idx:], sink64)
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}
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func store_le32(b []byte) {
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// amd64:`MOVL\s`
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// arm64:`MOVW`,-`MOV[BH]`
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// ppc64le:`MOVW\s`
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binary.LittleEndian.PutUint32(b, sink32)
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}
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func store_le32_idx(b []byte, idx int) {
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// amd64:`MOVL\s`
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// arm64:`MOVW\sR[0-9]+,\s\(R[0-9]+\)\(R[0-9]+\)`,-`MOV[BH]`
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// ppc64le:`MOVW\s`
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binary.LittleEndian.PutUint32(b[idx:], sink32)
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}
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func store_le16(b []byte) {
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// amd64:`MOVW\s`
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// arm64:`MOVH`,-`MOVB`
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// ppc64le(DISABLED):`MOVH\s`
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binary.LittleEndian.PutUint16(b, sink16)
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}
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func store_le16_idx(b []byte, idx int) {
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// amd64:`MOVW\s`
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// arm64:`MOVH\sR[0-9]+,\s\(R[0-9]+\)\(R[0-9]+\)`,-`MOVB`
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// ppc64le(DISABLED):`MOVH\s`
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binary.LittleEndian.PutUint16(b[idx:], sink16)
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}
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func store_be64(b []byte) {
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// amd64:`BSWAPQ`,-`SHR.`
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// arm64:`MOVD`,`REV`,-`MOV[WBH]`,-`REVW`,-`REV16W`
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binary.BigEndian.PutUint64(b, sink64)
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}
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func store_be64_idx(b []byte, idx int) {
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// amd64:`BSWAPQ`,-`SHR.`
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// arm64:`REV`,`MOVD\sR[0-9]+,\s\(R[0-9]+\)\(R[0-9]+\)`,-`MOV[BHW]`,-`REV16W`,-`REVW`
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binary.BigEndian.PutUint64(b[idx:], sink64)
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}
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func store_be32(b []byte) {
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// amd64:`BSWAPL`,-`SHR.`
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// arm64:`MOVW`,`REVW`,-`MOV[BH]`,-`REV16W`
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binary.BigEndian.PutUint32(b, sink32)
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}
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func store_be32_idx(b []byte, idx int) {
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// amd64:`BSWAPL`,-`SHR.`
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// arm64:`REVW`,`MOVW\sR[0-9]+,\s\(R[0-9]+\)\(R[0-9]+\)`,-`MOV[BH]`,-`REV16W`
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binary.BigEndian.PutUint32(b[idx:], sink32)
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}
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func store_be16(b []byte) {
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// amd64:`ROLW\s\$8`,-`SHR.`
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// arm64:`MOVH`,`REV16W`,-`MOVB`
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binary.BigEndian.PutUint16(b, sink16)
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}
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func store_be16_idx(b []byte, idx int) {
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// amd64:`ROLW\s\$8`,-`SHR.`
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// arm64:`MOVH\sR[0-9]+,\s\(R[0-9]+\)\(R[0-9]+\)`,`REV16W`,-`MOVB`
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binary.BigEndian.PutUint16(b[idx:], sink16)
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}
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// ------------- //
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// Zeroing //
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// ------------- //
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// Check that zero stores are combined into larger stores
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func zero_byte_2(b1, b2 []byte) {
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// bounds checks to guarantee safety of writes below
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_, _ = b1[1], b2[1]
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b1[0], b1[1] = 0, 0 // arm64:"MOVH\tZR",-"MOVB"
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b2[1], b2[0] = 0, 0 // arm64:"MOVH\tZR",-"MOVB"
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}
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func zero_byte_4(b1, b2 []byte) {
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_, _ = b1[3], b2[3]
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b1[0], b1[1], b1[2], b1[3] = 0, 0, 0, 0 // arm64:"MOVW\tZR",-"MOVB",-"MOVH"
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b2[2], b2[3], b2[1], b2[0] = 0, 0, 0, 0 // arm64:"MOVW\tZR",-"MOVB",-"MOVH"
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}
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func zero_byte_8(b []byte) {
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_ = b[7]
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b[0], b[1], b[2], b[3] = 0, 0, 0, 0
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b[4], b[5], b[6], b[7] = 0, 0, 0, 0 // arm64:"MOVD\tZR",-"MOVB",-"MOVH",-"MOVW"
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}
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func zero_byte_16(b []byte) {
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_ = b[15]
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b[0], b[1], b[2], b[3] = 0, 0, 0, 0
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b[4], b[5], b[6], b[7] = 0, 0, 0, 0
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b[8], b[9], b[10], b[11] = 0, 0, 0, 0
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b[12], b[13], b[14], b[15] = 0, 0, 0, 0 // arm64:"STP",-"MOVB",-"MOVH",-"MOVW"
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}
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func zero_byte_2_idx(b []byte, idx int) {
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// arm64: `MOVH\sZR,\s\(R[0-9]+\)\(R[0-9]+<<1\)`,-`MOVB`
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b[(idx<<1)+0] = 0
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b[(idx<<1)+1] = 0
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}
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func zero_byte_4_idx(b []byte, idx int) {
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// arm64: `MOVW\sZR,\s\(R[0-9]+\)\(R[0-9]+<<2\)`,-`MOV[BH]`
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b[(idx<<2)+0] = 0
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b[(idx<<2)+1] = 0
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b[(idx<<2)+2] = 0
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b[(idx<<2)+3] = 0
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}
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func zero_byte_8_idx(b []byte, idx int) {
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// arm64: `MOVD\sZR,\s\(R[0-9]+\)\(R[0-9]+<<3\)`,-`MOV[BHW]`
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b[(idx<<3)+0] = 0
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b[(idx<<3)+1] = 0
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b[(idx<<3)+2] = 0
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b[(idx<<3)+3] = 0
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b[(idx<<3)+4] = 0
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b[(idx<<3)+5] = 0
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b[(idx<<3)+6] = 0
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b[(idx<<3)+7] = 0
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}
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func zero_byte_30(a *[30]byte) {
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*a = [30]byte{} // arm64:"STP",-"MOVB",-"MOVH",-"MOVW"
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}
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func zero_byte_39(a *[39]byte) {
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*a = [39]byte{} // arm64:"MOVD",-"MOVB",-"MOVH",-"MOVW"
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}
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func zero_uint16_2(h1, h2 []uint16) {
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_, _ = h1[1], h2[1]
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h1[0], h1[1] = 0, 0 // arm64:"MOVW\tZR",-"MOVB",-"MOVH"
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h2[1], h2[0] = 0, 0 // arm64:"MOVW\tZR",-"MOVB",-"MOVH"
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}
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|
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func zero_uint16_4(h1, h2 []uint16) {
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|
_, _ = h1[3], h2[3]
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h1[0], h1[1], h1[2], h1[3] = 0, 0, 0, 0 // arm64:"MOVD\tZR",-"MOVB",-"MOVH",-"MOVW"
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h2[2], h2[3], h2[1], h2[0] = 0, 0, 0, 0 // arm64:"MOVD\tZR",-"MOVB",-"MOVH",-"MOVW"
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|
}
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|
|
|
func zero_uint16_8(h []uint16) {
|
|
_ = h[7]
|
|
h[0], h[1], h[2], h[3] = 0, 0, 0, 0
|
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h[4], h[5], h[6], h[7] = 0, 0, 0, 0 // arm64:"STP",-"MOVB",-"MOVH"
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|
}
|
|
|
|
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"
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|
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"
|
|
}
|