golang opt 代码
文件路径：/src/cmd/compile/internal/ssa/opt.go
/ 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 ssa
/ machine-independent optimization
func opt(f *Func) {
applyRewrite(f, rewriteBlockgeneric, rewriteValuegeneric, removeDeadValues)
}