Source file src/pkg/runtime/cpuflags_amd64.go

     1	// Copyright 2015 The Go Authors. All rights reserved.
     2	// Use of this source code is governed by a BSD-style
     3	// license that can be found in the LICENSE file.
     4	
     5	package runtime
     6	
     7	import (
     8		"internal/cpu"
     9	)
    10	
    11	var useAVXmemmove bool
    12	
    13	func init() {
    14		// Let's remove stepping and reserved fields
    15		processor := processorVersionInfo & 0x0FFF3FF0
    16	
    17		isIntelBridgeFamily := isIntel &&
    18			processor == 0x206A0 ||
    19			processor == 0x206D0 ||
    20			processor == 0x306A0 ||
    21			processor == 0x306E0
    22	
    23		useAVXmemmove = cpu.X86.HasAVX && !isIntelBridgeFamily
    24	}
    25	

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