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https://github.com/rwinkhart/sys.git
synced 2026-08-28 12:56:32 -04:00
Egon Elbre
942780bbc1
The ARM64 flags were not being correctly set for Mac M series laptops. Fixes golang/go#43046 Change-Id: I1d884dccd3f3a0a010ad7babbab26b73731ab583 Reviewed-on: https://go-review.googlesource.com/c/sys/+/737260 Auto-Submit: Keith Randall <khr@golang.org> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Keith Randall <khr@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: David Chase <drchase@google.com>
30 lines
758 B
Go
30 lines
758 B
Go
// Copyright 2026 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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//go:build darwin && arm64 && !gc
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package cpu
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func doinit() {
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setMinimalFeatures()
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ARM64.HasASIMD = true
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ARM64.HasFP = true
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// Go already assumes these to be available because they were on the M1
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// and these are supported on all Apple arm64 chips.
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ARM64.HasAES = true
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ARM64.HasPMULL = true
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ARM64.HasSHA1 = true
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ARM64.HasSHA2 = true
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if runtime.GOOS != "ios" {
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// Apple A7 processors do not support these, however
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// M-series SoCs are at least armv8.4-a
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ARM64.HasCRC32 = true // armv8.1
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ARM64.HasATOMICS = true // armv8.2
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ARM64.HasJSCVT = true // armv8.3, if HasFP
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}
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}
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