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weirdperformance: consolidate luastr and luavm as sub-modules

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Drop the top-level luastr and luavm module flags and wire both through
weirdperformance, matching the existing luaalloc/luagc sub-module pattern.
Also removes luavm's A/B rdtsc instrumentation now that the newlstr hash
pre-check is production-only.

 - build.zig: remove luastr/luavm from module_list
 - DLL_README.md: add Lua Runtime bullet under Performance, swap
   em/en-dashes for ASCII
 - src/luavm/: delete (files moved into src/weirdperformance/ which was
   already the tracked location in HEAD)
This commit is contained in:
MarcelineVQ
2026-04-11 13:21:51 -07:00
parent 039cec1806
commit 27b9254ab8
4 changed files with 9 additions and 273 deletions
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DLL_README.md
+7 -6
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@@ -234,7 +234,7 @@ This value is saved to the `cursorScale` CVar in tenths: `/script SetCVar("curso
Lua API for addon developers:
- `SetCursorScale(n)` -- set scale factor (1.0–4.0), takes effect on next cursor change
- `SetCursorScale(n)` -- set scale factor (1.0-4.0), takes effect on next cursor change
- `GetCursorScale()` -- returns current scale factor
**DLL:** `bigcursor.dll`
@@ -245,12 +245,13 @@ Lua API for addon developers:
Engine-level optimizations that reduce CPU time on math, rendering helpers, file lookups, and data decompression.
- **SIMD Math** — replaces 20+ internal math functions with SSE/AVX equivalents covering skeletal animation, particle rendering, frustum culling, collision detection, text glyph caching, and float-to-integer conversion
- **Data Decompression** — swaps the game's 2004-era zlib with a modern library (2.2x faster). Loading screen times reduced by at least 13%
- **MPQ File Cache** — caches archive file lookups so repeat file opens skip the archive chain walk. Saving 50-160ms every 15 seconds during heavy gameplay
- **Timer Calibration** — recalibrates the OS performance counter for accurate animation timing. Ported from [VanillaFixes](https://github.com/hannesmann/vanillafixes)
- **SIMD Math** -- replaces 20+ internal math functions with SSE/AVX equivalents covering skeletal animation, particle rendering, frustum culling, collision detection, text glyph caching, and float-to-integer conversion
- **Data Decompression** -- swaps the game's 2004-era zlib with a modern library (2.2x faster). Loading screen times reduced by at least 13%
- **MPQ File Cache** -- caches archive file lookups so repeat file opens skip the archive chain walk. Saving 50-160ms every 15 seconds during heavy gameplay
- **Timer Calibration** -- recalibrates the OS performance counter for accurate animation timing. Ported from [VanillaFixes](https://github.com/hannesmann/vanillafixes)
- **Lua Runtime** -- custom slab allocator (O(1) free/realloc), incremental/generational GC (turns the ~5s stop-the-world freeze into ~9ms chunks), faster string interning (~40% on `luaS_newlstr`), and a literal prefilter on `string.find`/`gfind`/`gsub` that kills the O(n²) backtracking addon combat log parsers inflict on every chat message
Most noticeable in cities, raids, and during zone transitions.
Most noticeable in cities, raids, during zone transitions, and in addon-heavy setups.
**DLL:** `weirdperformance.dll`