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Writing a Ruby compiler in Ruby

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Analyzed about 19 hours ago. based on code collected 2 days ago.

Commit Message	Contributor	Files Modified	Lines Added	Lines Removed	Code Location	Date
Sep 12, 2025 — Sep 12, 2026 Showing page 7 of 117 Search / Filter on:
docs: record 3 self-hosted compiler issues found while perf-tuning (KNOWN_ISSUES)	Vidar Hokstad	More...				2 months ago
perf: index loops + cached dispatch name in hot codegen (block-boxing + strings)	Vidar Hokstad	More...				2 months ago
perf: thread depth_first's block as a regular arg -> 2.6x faster self-hosted compile	Vidar Hokstad	More...				2 months ago
perf: drop a few throwaway Arrays in caller_save / process_scope_env / Function#init	Vidar Hokstad	More...				2 months ago
perf: evict avoids building a discarded collect+compact array	Vidar Hokstad	More...				2 months ago
perf: build in_scopes result in one pass (drop reverse+collect+compact)	Vidar Hokstad	More...				2 months ago
perf: index-loops instead of each_with_index in hot transform/lookup paths	Vidar Hokstad	More...				2 months ago
perf: memoize clean_method_name (both hosts)	Vidar Hokstad	More...				2 months ago
perf: short-circuit discarded trace() string-building in hot call paths	Vidar Hokstad	More...				2 months ago
perf: cache peeked atom in Keyword.expect (~20% fewer allocations, both hosts)	Vidar Hokstad	More...				2 months ago
perf: short-circuit discarded comment string-building (Emitter::COMMENTS)	Vidar Hokstad	More...				2 months ago
perf: compare position fields instead of building inspect strings in compile_eval_arg	Vidar Hokstad	More...				2 months ago
perf: index-loop instead of each_with_index in compile_args_nosplat	Vidar Hokstad	More...				2 months ago
perf: hoist redundant Symbol#to_s in scope get_arg (both hosts)	Vidar Hokstad	More...				2 months ago
perf: explicit Value#[] bypasses SimpleDelegator#method_missing (both hosts)	Vidar Hokstad	More...				2 months ago
perf: Emitter one-liner helpers build instruction rows directly (both hosts)	Vidar Hokstad	More...				2 months ago
perf: skip redundant char copies in Scanner (getc result reuse + single-char unget)	Vidar Hokstad	More...				2 months ago
perf: cache Scanner#position (immutable snapshot, queried repeatedly at one spot)	Vidar Hokstad	More...				2 months ago
perf: emit_row avoids re-collecting instruction rows on the flush path	Vidar Hokstad	More...				2 months ago
perf: replace Enumerable#member? in per-char/per-node hot paths (big allocator)	Vidar Hokstad	More...				2 months ago
perf: hoist clean_method_name's operator dict to a frozen constant	Vidar Hokstad	More...				2 months ago
perf: inline peephole pattern comparisons (per-instruction Array/String literals)	Vidar Hokstad	More...				2 months ago
perf: depth_first uses a while-index loop, not self.each (block dispatch per node)	Vidar Hokstad	More...				2 months ago
perf(gc): shrink tgc table entry 16->8 bytes (drop hash, pack flags into size)	Vidar Hokstad	More...				2 months ago
cleanup: Atom.expect identifier-start uses Tokens.alpha? (no char-Range objects)	Vidar Hokstad	More...				2 months ago
perf: drop per-char Array literals in scanner/tokenizer whitespace checks	Vidar Hokstad	More...				2 months ago
perf: Array#depth_first -- thread arg array through recursion, no re-splat	Vidar Hokstad	More...				2 months ago
perf: cut compile allocations -- scanner peek cache + tokenizer ord char-classes	Vidar Hokstad	More...				2 months ago
perf(gc): raise tgc sweepfactor 2->16 -- ~30% faster self-hosted compile	Vidar Hokstad	More...				2 months ago
fix+perf: ASTMarshal.load works self-hosted (byte dispatch) + no per-read alloc	Vidar Hokstad	More...				2 months ago

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