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Phase 7j: words buffers + w[i] word indexing (retire peek32/poke32)

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32-bit word access is indexing now, not peek32/poke32:

  peek32(ui_rx, i)       -> ui_rx[i]        (reads an int)
  poke32(rt_fb, i, c)    -> rt_fb[i] = c    (writes an int)

A buffer typed `words` (a pointer whose elements are i32) indexes with `w[i]`
as a full int; a plain `ptr`/`str` keeps byte indexing. emit_index_addr picks the
element type from the base's type — byte-identical IR to the old intrinsics, so
the migration reproduces the compiler and every golden render exactly.

The ~60 word buffers (rt_fb, tt_*/gc_* font tables, png_px/spr_px pixels, ui_*
layout arrays) were retyped from `ptr` to `words` scope-aware (per-function, so
the s/out/p byte-vs-word name collisions across functions stay correct), then the
254 peek32/poke32 sites migrated to indexing. A scope-analysis miss left 12
buffers (gc_*, sc_d, ui_rx/ui_ry) un-retyped — caught as a menu golden diff and
fixed. No true mixed byte+word access exists on any one variable, so a per-buffer
element type is sound.

Reseeded (22527 lines); C-free fixpoint holds; goldens byte-identical; 18/18;
vocab (byte/words types in, peek32/poke32 out) + doc-fences clean.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-08-28 02:20:50 +03:00
parent 454427bce8
commit ae0bae0457
17 changed files with 3032 additions and 3118 deletions
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selfhost/emit_core.ludic
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@ -54,6 +54,7 @@ fn lbl(pfx: ptr) -> ptr { let r = (pfx + itoa(ll_lbl)); ll_lbl = ll_lbl + 1; r
fn llty(t: ptr) -> ptr {
if (t == "int") or (t == "bool") or (t == "fixed") { return "i32" }
if (t == "byte") { return "i8" } # a single byte (p[i] on a raw ptr)
if (t == "words") { return "ptr" } # a 32-bit-word buffer (w[i] is i32)
if (t == "void") { return "void" }
return "ptr"
}