Dev.to
6/28/2026

V.E.L.O.C.I.T.Y.-OS: Classic Compiler Optimization Passes in JIT (Part 7)
Short summary
V.E.L.O.C.I.T.Y.-OS Part 7 implements four classic compiler optimization passes for a bare-metal JIT compiler: constant folding, constant propagation, loop unrolling (for ≤4 iterations), and dead code elimination. The article provides detailed Rust code examples and describes a critical bug fix for handling loop-carried dependencies in the DCE pass. Part of an ambitious 12-part series building a self-healing OS in CPU L3 cache.
- •Implements constant folding, constant propagation, loop unrolling, and dead code elimination passes
- •Includes Rust code examples and describes DCE bug fix for loop-carried dependencies
- •Part 7 of 12-part series on bare-metal OS in CPU L3 cache
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