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use simd masking for amd64&arm64#326

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Merged
nhooyr merged 26 commits intocoder:devfromwdvxdr1123:patch-simd-mask
Feb 22, 2024
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5df0303
mask.go: Use SIMD masking for amd64 and arm64
wdvxdr1123Jan 24, 2022
cda2170
Refactor and compile masking code again
nhooyrOct 19, 2023
f5397ae
mask_asm.go: Disable AVX2
nhooyrOct 19, 2023
14172e5
Benchmark pure go masking algorithm separately from assembly
nhooyrOct 19, 2023
685a56e
Update README.md to indicate assembly websocket masking
nhooyrOct 19, 2023
cb7509a
mask_amd64.s: Remove AVX2 fully
nhooyrOct 19, 2023
3f8c9e0
mask_amd64.s: Minor improvements
nhooyrOct 19, 2023
367743d
mask_amd64.sh: Cleanup
nhooyrOct 19, 2023
27f80cb
mask.go: Cleanup assembly and add nbio benchmark
nhooyrOct 19, 2023
369d641
mask_arm64.s: Cleanup
nhooyrOct 20, 2023
fb13df2
ci/bench.sh: Benchmark masking on arm64 with QEMU
nhooyrOct 20, 2023
ecf7dec
ci/bench.sh: Install QEMU on CI
nhooyrOct 20, 2023
d34e5d4
wsjson: Add json.Encoder vs json.Marshal benchmark
nhooyrOct 20, 2023
e25d968
ci/bench.sh: Don't profile by default
nhooyrOct 20, 2023
640e3c2
ci/bench.sh: Try function instead of alias
nhooyrOct 20, 2023
0596e7a
wsjson: Extend benchmark with multiple sizes
nhooyrOct 20, 2023
30447a3
ci/bench.sh: Just symlink the expected qemu-aarch64 binary name
nhooyrOct 20, 2023
f4e61e5
ci/fmt.sh: Error if changes on CI
nhooyrOct 21, 2023
f533f43
mask.go: Reorganize
nhooyrOct 21, 2023
a1bb441
ci: Fix dev coverage output
nhooyrFeb 7, 2024
fee3739
mask_asm: Note implementation may not be perfect
nhooyrFeb 7, 2024
68fc887
mask.go: Revert my changes
nhooyrFeb 22, 2024
f62cef3
test.sh: Test assembly masking on arm64
nhooyrFeb 22, 2024
92acb74
internal/xcpu: Vendor golang.org/x/sys/cpu
nhooyrFeb 22, 2024
17e1b86
mask_asm: Disable AVX2
nhooyrFeb 22, 2024
2cd18b3
README.md: Link to assembly benchmark results
nhooyrFeb 22, 2024
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internal/xcpu: Vendor golang.org/x/sys/cpu
Standard library does this too. Unfortunate wish they just exposed it in thestandard library. Perhaps we can isolate the specific code we need later.
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@nhooyr
nhooyr committedFeb 22, 2024
commit92acb74883ce505cd4eefd32841ef807de3e78f8
2 changes: 0 additions & 2 deletionsgo.mod
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@@ -1,5 +1,3 @@
module nhooyr.io/websocket

go 1.19

require golang.org/x/sys v0.17.0
2 changes: 0 additions & 2 deletionsgo.sum
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@@ -1,2 +0,0 @@
golang.org/x/sys v0.17.0 h1:25cE3gD+tdBA7lp7QfhuV+rJiE9YXTcS3VG1SqssI/Y=
golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
2 changes: 0 additions & 2 deletionsinternal/examples/go.mod
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Expand Up@@ -8,5 +8,3 @@ require (
golang.org/x/time v0.3.0
nhooyr.io/websocket v0.0.0-00010101000000-000000000000
)

require golang.org/x/sys v0.17.0 // indirect
2 changes: 0 additions & 2 deletionsinternal/examples/go.sum
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@@ -1,4 +1,2 @@
golang.org/x/sys v0.17.0 h1:25cE3gD+tdBA7lp7QfhuV+rJiE9YXTcS3VG1SqssI/Y=
golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/time v0.3.0 h1:rg5rLMjNzMS1RkNLzCG38eapWhnYLFYXDXj2gOlr8j4=
golang.org/x/time v0.3.0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
10 changes: 10 additions & 0 deletionsinternal/xcpu/.gitattributes
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# Treat all files in this repo as binary, with no git magic updating
# line endings. Windows users contributing to Go will need to use a
# modern version of git and editors capable of LF line endings.
#
# We'll prevent accidental CRLF line endings from entering the repo
# via the git-review gofmt checks.
#
# See golang.org/issue/9281

* -text
2 changes: 2 additions & 0 deletionsinternal/xcpu/.gitignore
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# Add no patterns to .gitignore except for files generated by the build.
last-change
3 changes: 3 additions & 0 deletionsinternal/xcpu/README.md
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# cpu

Vendored from https://github.com/golang/sys
17 changes: 17 additions & 0 deletionsinternal/xcpu/asm_aix_ppc64.s
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// 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.

//go:build gc

#include "textflag.h"

//
// System calls for ppc64, AIX are implemented in runtime/syscall_aix.go
//

TEXT ·syscall6(SB),NOSPLIT,$0-88
JMPsyscall·syscall6(SB)

TEXT ·rawSyscall6(SB),NOSPLIT,$0-88
JMPsyscall·rawSyscall6(SB)
66 changes: 66 additions & 0 deletionsinternal/xcpu/byteorder.go
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// Copyright 2019 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 xcpu

import (
"runtime"
)

// byteOrder is a subset of encoding/binary.ByteOrder.
type byteOrder interface {
Uint32([]byte) uint32
Uint64([]byte) uint64
}

type littleEndian struct{}
type bigEndian struct{}

func (littleEndian) Uint32(b []byte) uint32 {
_ = b[3] // bounds check hint to compiler; see golang.org/issue/14808
return uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24
}

func (littleEndian) Uint64(b []byte) uint64 {
_ = b[7] // bounds check hint to compiler; see golang.org/issue/14808
return uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 |
uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56
}

func (bigEndian) Uint32(b []byte) uint32 {
_ = b[3] // bounds check hint to compiler; see golang.org/issue/14808
return uint32(b[3]) | uint32(b[2])<<8 | uint32(b[1])<<16 | uint32(b[0])<<24
}

func (bigEndian) Uint64(b []byte) uint64 {
_ = b[7] // bounds check hint to compiler; see golang.org/issue/14808
return uint64(b[7]) | uint64(b[6])<<8 | uint64(b[5])<<16 | uint64(b[4])<<24 |
uint64(b[3])<<32 | uint64(b[2])<<40 | uint64(b[1])<<48 | uint64(b[0])<<56
}

// hostByteOrder returns littleEndian on little-endian machines and
// bigEndian on big-endian machines.
func hostByteOrder() byteOrder {
switch runtime.GOARCH {
case "386", "amd64", "amd64p32",
"alpha",
"arm", "arm64",
"loong64",
"mipsle", "mips64le", "mips64p32le",
"nios2",
"ppc64le",
"riscv", "riscv64",
"sh":
return littleEndian{}
case "armbe", "arm64be",
"m68k",
"mips", "mips64", "mips64p32",
"ppc", "ppc64",
"s390", "s390x",
"shbe",
"sparc", "sparc64":
return bigEndian{}
}
panic("unknown architecture")
}
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