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https://github.com/golang/go
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5a6c580990
Changes all cpu features to be detected and stored in bools in rt0_go. Updates: #15403 Change-Id: I5a9961cdec789b331d09c44d86beb53833d5dc3e Reviewed-on: https://go-review.googlesource.com/41950 Run-TryBot: Martin Möhrmann <moehrmann@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ilya Tocar <ilya.tocar@intel.com> Reviewed-by: Keith Randall <khr@golang.org>
21 lines
502 B
Go
21 lines
502 B
Go
// Copyright 2015 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 runtime
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var useAVXmemmove bool
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func init() {
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// Let's remove stepping and reserved fields
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processor := processorVersionInfo & 0x0FFF3FF0
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isIntelBridgeFamily := isIntel &&
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processor == 0x206A0 ||
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processor == 0x206D0 ||
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processor == 0x306A0 ||
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processor == 0x306E0
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useAVXmemmove = support_avx && !isIntelBridgeFamily
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}
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