Jad Assaf https://jad.moe Systems software, compilers, and low-level programming Two Definitions, One Use: Building SSA in a Haskell Compiler https://jad.moe/posts/2026-07-27-ssa-construction.html 2026-07-27 Two Definitions, One Use: Building SSA in a Haskell Compiler What Was Actually Hard: Finishing a Verified Compiler in Lean 4 https://jad.moe/posts/2026-07-26-what-was-actually-hard.html 2026-07-26 What Was Actually Hard: Finishing a Verified Compiler in Lean 4 The Verification Gap: Building a Proven-Correct Compiler in Lean 4 https://jad.moe/posts/2024-07-25-phi-verification-gap.html 2024-07-25 The Verification Gap: Building a Proven-Correct Compiler in Lean 4