src/runtime/testdata/testprog/cpuflags_amd64.s - go - Git at Google

 // Copyright 2025 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.

 #include "textflag.h"

 TEXT	·checkAVX(SB), NOSPLIT|NOFRAME, $0-0
 	VXORPS	X1, X2, X3
 	RET
	// Copyright 2025 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.

	#include "textflag.h"

	TEXT ·checkAVX(SB), NOSPLIT\|NOFRAME, $0-0
	VXORPS X1, X2, X3
	RET