golang ir 代码
文件路径：/src/cmd/compile/internal/ir/ir.go
/ Copyright 2009 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 ir
文件路径：/src/cmd/compile/internal/ir/ir.go
/ Copyright 2009 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 ir