一个新的后端 A new back-end

[wangziwenhk]

你们可能已经从 Dev 分支看到了一个全新的后端被重写。这个后端首次使用了语义分析来解决 LLVM IR 的类型缺失问题。在该 Dev 分支被合并前，我们不会接收任何来自 7e78f9f 或更早节点分支的合并请求

You guys may have seen a brand new backend rewritten from the [dev] (https://github.com/wangziwenhk/riddle-lang/tree/dev) branch. This back-end uses semantic analysis for the first time to solve Type missing issue with LLVM IR. We will not receive any merge requests from [7e78f9f] (7e78f9f) or earlier node branches until this Dev branch is merged

[wangziwenhk]

后端已经被完全重写，现在你可以从 5f687 提交开始提供 PR 了