LLVM #5 — Mutable Variables
The article discusses the addition of mutable variables to the Kaleidoscope language within the LLVM framework. It explains the challenges of maintaining SSA form while allowing variable mutation and introduces a solution involving memory management techniques. The process includes creating memory addresses for variables and using a lifting pass to optimize performance by replacing memory accesses with CPU registers.
- ▪Kaleidoscope previously only supported immutable variables, limiting its functionality.
- ▪The article introduces the ability to mutate variables and define new local variables.
- ▪LLVM's mem2reg pass optimizes memory usage by replacing memory accesses with high-speed CPU registers.
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try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 3479289) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } Lahari Tenneti Posted on May 18 LLVM #5 — Mutable Variables #compilers #llvm #computerscience #learning LLVM - Kaleidoscope (7 Part Series) 1 LLVM — Introduction and Setup 2 LLVM #1 — Lexer, Parser, Codegen ... 3 more parts... 3 Compiler Optimisations 4 LLVM #2 — Optimiser Support & JIT Compilation 5 LLVM #3 — Control Flow 6 LLVM #4 — User Defined Operators 7 LLVM #5 — Mutable Variables So far, Kaleidoscope has been a functional language with immutable variables and no reassignment.
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