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0a52d80666
This CL optimizes memory moving with LDP and STP on arm64. Benchmarks: name old time/op new time/op delta ClearFat7-160 1.08ns ± 0% 0.95ns ± 0% -11.41% (p=0.008 n=5+5) ClearFat8-160 0.84ns ± 0% 0.84ns ± 0% -0.95% (p=0.008 n=5+5) ClearFat11-160 1.08ns ± 0% 0.95ns ± 0% -11.46% (p=0.008 n=5+5) ClearFat12-160 0.95ns ± 0% 0.95ns ± 0% ~ (p=0.063 n=4+5) ClearFat13-160 1.08ns ± 0% 0.95ns ± 0% -11.45% (p=0.008 n=5+5) ClearFat14-160 1.08ns ± 0% 0.95ns ± 0% -11.47% (p=0.008 n=5+5) ClearFat15-160 1.24ns ± 0% 0.95ns ± 0% -22.98% (p=0.029 n=4+4) ClearFat16-160 0.84ns ± 0% 0.83ns ± 0% -0.11% (p=0.008 n=5+5) ClearFat24-160 2.15ns ± 0% 2.15ns ± 0% ~ (all equal) ClearFat32-160 2.86ns ± 0% 2.86ns ± 0% ~ (p=0.333 n=5+4) ClearFat40-160 2.15ns ± 0% 2.15ns ± 0% ~ (all equal) ClearFat48-160 3.32ns ± 1% 3.31ns ± 1% ~ (p=0.690 n=5+5) ClearFat56-160 2.15ns ± 0% 2.15ns ± 0% ~ (all equal) ClearFat64-160 3.25ns ± 1% 3.26ns ± 1% ~ (p=0.841 n=5+5) ClearFat72-160 2.22ns ± 0% 2.22ns ± 0% ~ (p=0.444 n=5+5) ClearFat128-160 4.03ns ± 0% 4.04ns ± 0% +0.32% (p=0.008 n=5+5) ClearFat256-160 6.44ns ± 0% 6.44ns ± 0% +0.08% (p=0.016 n=4+5) ClearFat512-160 12.2ns ± 0% 12.2ns ± 0% +0.13% (p=0.008 n=5+5) ClearFat1024-160 24.3ns ± 0% 24.3ns ± 0% ~ (p=0.167 n=5+5) ClearFat1032-160 24.5ns ± 0% 24.5ns ± 0% ~ (p=0.238 n=4+5) ClearFat1040-160 29.2ns ± 0% 29.3ns ± 0% +0.34% (p=0.008 n=5+5) CopyFat7-160 1.43ns ± 0% 1.07ns ± 0% -24.97% (p=0.008 n=5+5) CopyFat8-160 0.89ns ± 0% 0.89ns ± 0% ~ (p=0.238 n=5+5) CopyFat11-160 1.43ns ± 0% 1.07ns ± 0% -24.97% (p=0.008 n=5+5) CopyFat12-160 1.07ns ± 0% 1.07ns ± 0% ~ (p=0.238 n=5+4) CopyFat13-160 1.43ns ± 0% 1.07ns ± 0% ~ (p=0.079 n=4+5) CopyFat14-160 1.43ns ± 0% 1.07ns ± 0% -24.95% (p=0.008 n=5+5) CopyFat15-160 1.79ns ± 0% 1.07ns ± 0% ~ (p=0.079 n=4+5) CopyFat16-160 1.07ns ± 0% 1.07ns ± 0% ~ (p=0.444 n=5+5) CopyFat24-160 1.84ns ± 2% 1.67ns ± 0% -9.28% (p=0.008 n=5+5) CopyFat32-160 3.22ns ± 0% 2.92ns ± 0% -9.40% (p=0.008 n=5+5) CopyFat64-160 3.64ns ± 0% 3.57ns ± 0% -1.96% (p=0.008 n=5+5) CopyFat72-160 3.56ns ± 0% 3.11ns ± 0% -12.89% (p=0.008 n=5+5) CopyFat128-160 5.06ns ± 0% 5.06ns ± 0% +0.04% (p=0.048 n=5+5) CopyFat256-160 9.13ns ± 0% 9.13ns ± 0% ~ (p=0.659 n=5+5) CopyFat512-160 17.4ns ± 0% 17.4ns ± 0% ~ (p=0.167 n=5+5) CopyFat520-160 17.2ns ± 0% 17.3ns ± 0% +0.37% (p=0.008 n=5+5) CopyFat1024-160 34.1ns ± 0% 34.0ns ± 0% ~ (p=0.127 n=5+5) CopyFat1032-160 80.9ns ± 0% 34.2ns ± 0% -57.74% (p=0.008 n=5+5) CopyFat1040-160 94.4ns ± 0% 41.7ns ± 0% -55.78% (p=0.016 n=5+4) Change-Id: I14186f9f82b0ecf8b6c02191dc5da566b9a21e6c Reviewed-on: https://go-review.googlesource.com/c/go/+/421654 Reviewed-by: Cherry Mui <cherryyz@google.com> Run-TryBot: Eric Fang <eric.fang@arm.com> Reviewed-by: Keith Randall <khr@google.com> TryBot-Result: Gopher Robot <gobot@golang.org>
66 lines
2.1 KiB
Go
66 lines
2.1 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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// This file contains code generation tests related to the handling of
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// string types.
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func CountRunes(s string) int { // Issue #24923
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// amd64:`.*countrunes`
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return len([]rune(s))
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}
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func ToByteSlice() []byte { // Issue #24698
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// amd64:`LEAQ\ttype:\[3\]uint8`
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// amd64:`CALL\truntime\.newobject`
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// amd64:-`.*runtime.stringtoslicebyte`
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return []byte("foo")
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}
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// Loading from read-only symbols should get transformed into constants.
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func ConstantLoad() {
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// 12592 = 0x3130
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// 50 = 0x32
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// amd64:`MOVW\t\$12592, \(`,`MOVB\t\$50, 2\(`
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// 386:`MOVW\t\$12592, \(`,`MOVB\t\$50, 2\(`
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// arm:`MOVW\t\$48`,`MOVW\t\$49`,`MOVW\t\$50`
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// arm64:`MOVD\t\$12592`,`MOVD\t\$50`
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// wasm:`I64Const\t\$12592`,`I64Store16\t\$0`,`I64Const\t\$50`,`I64Store8\t\$2`
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// mips64:`MOVV\t\$48`,`MOVV\t\$49`,`MOVV\t\$50`
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bsink = []byte("012")
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// 858927408 = 0x33323130
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// 13620 = 0x3534
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// amd64:`MOVL\t\$858927408`,`MOVW\t\$13620, 4\(`
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// 386:`MOVL\t\$858927408`,`MOVW\t\$13620, 4\(`
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// arm64:`MOVD\t\$858927408`,`MOVD\t\$13620`
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// wasm:`I64Const\t\$858927408`,`I64Store32\t\$0`,`I64Const\t\$13620`,`I64Store16\t\$4`
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bsink = []byte("012345")
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// 3978425819141910832 = 0x3736353433323130
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// 7306073769690871863 = 0x6564636261393837
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// amd64:`MOVQ\t\$3978425819141910832`,`MOVQ\t\$7306073769690871863`
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// 386:`MOVL\t\$858927408, \(`,`DUFFCOPY`
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// arm64:`MOVD\t\$3978425819141910832`,`MOVD\t\$7306073769690871863`,`MOVD\t\$15`
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// wasm:`I64Const\t\$3978425819141910832`,`I64Store\t\$0`,`I64Const\t\$7306073769690871863`,`I64Store\t\$7`
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bsink = []byte("0123456789abcde")
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// 56 = 0x38
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// amd64:`MOVQ\t\$3978425819141910832`,`MOVB\t\$56`
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bsink = []byte("012345678")
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// 14648 = 0x3938
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// amd64:`MOVQ\t\$3978425819141910832`,`MOVW\t\$14648`
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bsink = []byte("0123456789")
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// 1650538808 = 0x62613938
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// amd64:`MOVQ\t\$3978425819141910832`,`MOVL\t\$1650538808`
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bsink = []byte("0123456789ab")
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}
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var bsink []byte
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