A recursive Forth word almost always opens with a guard that returns early,
so every leaf of the recursion costs a call whose whole body is that test.
`Call(self)` now compiles as `<guard> IF <what the guard returns> ELSE
Call(self) THEN`, which is what the callee would have done on entry anyway.
Half of fib's nodes are leaves: Fibonacci(25) 356 -> 237 us, 1.24x sf64 ->
0.83x, so all five benchmarks now beat it.
The guard runs twice along the recursive path, hence the bounds: at most six
effect-free operations, at most four call sites, never a tail call. WS-018.
Version bump plus a doc sweep: the benchmark tables in README and
docs/OPTIMIZATIONS.md were still from before the typed calling convention,
OPTIMIZATIONS listed BEGIN loop promotion as not started, and the
subroutine-threading section of docs/WAFER.md described the memory ABI as
the only one.
- README: add performance section (beats gforth 2-10x), update test
commands, note self-recursive direct calls and loop promotion
- CLAUDE.md: update test counts (427 unit + comparison tests)
- OPTIMIZATIONS.md: stack-to-local Phase 1→Phase 2 (loops + IF),
DO/LOOP locals done, J as IR done, add section 14 (self-recursive
direct call), add current performance table vs gforth
- WAFER.md: document self-recursive call optimization, CONSOLIDATE,
update test commands and line counts
- FORTH.md: expanded space history, add FORTH-IN-SPACE.md reference
- FORTH-IN-SPACE.md: new document with verified spacecraft history
Batch-compile all ~64 IR primitives into a single WASM module at startup.
Replaces 64 separate Module::new + Instance::new with 1 of each.
Reuses compile_consolidated_module() directly, removed compile_core_module() stub.
Boot time: 7.7ms -> 0.6ms (release), test suite: 5.1s -> 1.5s (debug).
13 of 14 optimizations now implemented. 392 tests passing.
- Add docs/OPTIMIZATIONS.md: catalog of 14 optimization passes with
status tracking and implementation roadmap
- Configure workspace-level clippy and rustc lints in Cargo.toml
- Add clippy.toml and deny.toml for clippy thresholds and dependency
auditing (licenses, advisories, bans)
- Set up pre-commit hook: cargo fmt, dprint, clippy, cargo deny,
cargo machete
- Update Justfile with deny/machete targets, dprint in fmt checks
Core word set: 0 errors on Gerry Jackson's forth2012-test-suite/core.fr
- Fix POSTPONE for non-immediate words via COMPILE, mechanism
- Fix double-DOES> (WEIRD: pattern) with does-body scanning and
runtime patching via _DOES_PATCH_
- Implement CATCH/THROW exception handling using wasmtime trap
mechanism with stack pointer save/restore
- 232 tests passing
Rename ABOUT_FORTH.md to FORTH.md and rewrite to cover Forth's unique
position as simultaneously low-level and high-level, where Forth is used
today (Philae lander, Open Firmware, embedded systems), and why Forth
maps naturally onto WebAssembly's stack machine architecture.
Oleksandr Kozachuk
ok2