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Wizardry
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Generating LLVM IR without malloc or external dependencies
108 starsC
Nibble
by glouwbug·May 14, 2026·102 points·25 comments
AI Analysis
●●●BangerWizardryBig BrainNiche Gem
Single-pass LLVM frontend in 3000 lines of C with zero heap allocations.
Strengths
- •Single-pass architecture removes AST overhead and external dependency requirements entirely during compilation.
- •Graphical demos provide proof of runtime viability with SDL2 rendering and multithreading.
- •Zero heap allocation strategy enforces disciplined memory management throughout the compilation process.
Weaknesses
- •Alloca in loops triggers stack overflows at high clang backend optimization levels.
- •Author marked project complete, limiting potential future feature development or bug fixes.
Category
Target Audience
Systems programmers, compiler engineers
Similar To
TinyCC · LLVM · Oberon
Post Description
An attempt at a single pass LLVM frontend in ~3000 lines of C without external dependencies, malloc, or an AST. Included are some graphical examples. The IR isn't perfect, and the README touches on one particular downfall
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