You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: blake2s_amd64.go
    path of file: ./repos/gotosocial/vendor/golang.org/x/crypto/blake2s
    
    the code of the file until where you have to start completion: // Copyright 2016 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.

//go:build amd64 && gc && !purego

package bl
    
func hashBlocks(h *[8]uint32, c *[2]uint32, flag uint32, blocks []byte) {
	switch {
	case useSSE4:
		hashBlocksSSE4(h, c, flag, blocks)
	case useSSSE3:
		hashBlocksSSSE3(h, c, flag, blocks)
	case useSSE2:
		hashBlocksSSE2(h, c, flag, blocks)
	default:
		hashBlocksGeneric(h, c, flag, blocks)
	}
}