Add a primitive guaranteed to inhibit constant folding

描述

貢獻者指南

技術棧

無

領域

tooling

議題類型

feature

難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。

4

預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。

1-3 hours

活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。

stale

清晰度議題是否清楚說明預期改動、驗收標準和下一步。

mostly clear

前置要求

Knowledge of constant foldingFamiliarity with dex lang compiler

新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。

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.