Back to feed
Dev.to
Dev.to
6/28/2026
V.E.L.O.C.I.T.Y.-OS: The x86-64 Machine-Code JIT & SCEV-Lite (Part 6)

V.E.L.O.C.I.T.Y.-OS: The x86-64 Machine-Code JIT & SCEV-Lite (Part 6)

Short summary

Part 6 of a compiler series describing x86-64 JIT compilation for scalar operations, including register allocation strategies (R12-R15) to prevent memory traffic, and SCEV-Lite—an algebraic loop solver that eliminates loop iterations by computing closed-form solutions at compile-time. The author debugged a critical REX prefix bug and optimized loops to O(1) execution.

  • •Compiles scalar AST blocks directly to x86-64 machine code at runtime using a custom JIT compiler
  • •Implements register allocation (R12-R15) and fixes critical REX prefix corruption bug
  • •SCEV-Lite algebraically solves loops, replacing millions of iterations with 5 assembly instructions

Generated with AI, which can make mistakes.

#ai-tools#research-breakthrough#certification-education
Read full article at Dev.to

Is this a good recommendation for you?

Comments

Failed to load comments. Please try again.

Explore more

V.E.L.O.C.I.T.Y.-OS: The JIT Compiler Core – From AST to Native Closures (Part 4)
Dev.to
V.E.L.O.C.I.T.Y.-OS: Classic Compiler Optimization Passes in JIT (Part 7)
Dev.to
V.E.L.O.C.I.T.Y.-OS: JIT Math Optimizations – Division-Free and In-Place (Part 5)
Dev.to
V.E.L.O.C.I.T.Y.-OS: The Self-Healing Kernel & LLM Terminal Handover (Part 12)
Dev.to