Add a primitive guaranteed to inhibit constant folding

描述

贡献者指南

技术栈

无

领域

tooling

议题类型

feature

难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。

4

预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。

1-3 hours

活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。

stale

清晰度议题是否清楚说明期望改动、验收标准和下一步。

mostly clear

前置要求

Knowledge of constant foldingFamiliarity with dex lang compiler

新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。

35

研究方向

Investigate the dex lang compiler's constant folding implementation, likely in the optimizer or middle end. Identify where primitives are defined and how they are handled. Propose a new primitive `unknown` that the compiler treats as unknown value to inhibit constant folding. Implementation involves adding the primitive to the language's syntax and semantics, and ensuring the constant folding pass does not fold expressions involving it.