summaryrefslogtreecommitdiff
path: root/src/runtime/cpuflags_amd64.go
blob: 3e408dae5f1a5d4bfba4cd7f81b966eb29992e7e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
// Copyright 2015 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 runtime

var useAVXmemmove bool

func init() {
	// Let's remove stepping and reserved fields
	processor := processorVersionInfo & 0x0FFF3FF0

	isIntelBridgeFamily := isIntel &&
		processor == 0x206A0 ||
		processor == 0x206D0 ||
		processor == 0x306A0 ||
		processor == 0x306E0

	useAVXmemmove = support_avx && !isIntelBridgeFamily
}