workshopsoft/ludic
2
0
Fork 0
Code Issues Pull requests Projects Releases 26 Packages Wiki Activity Actions

Phase 7k: bytes(n) / words(n) allocators (retire mem_alloc)

Browse source 
Allocation reads as intent, not malloc:

  mem_alloc(64)          -> bytes(64)              (64 bytes -> a byte buffer)
  mem_alloc(w * h * 4)   -> words(w * h)           (w*h 32-bit words)

bytes(n) mallocs n bytes and returns a plain pointer (byte-indexed); words(n)
mallocs n*4 bytes and returns a `words` pointer (int-indexed). Since words(X) and
mem_alloc(X*4) allocate the identical number of bytes, the migration cannot change
any allocation size — the `* 4` factor just moves from the argument into the
allocator name, pairing naturally with the Phase-7j `words` retyping
(`var fb: words = words(w * h)`).

Migrated 102 sites (mem_alloc(E*4) -> words(E), else bytes(E)); deleted the
mem_alloc intrinsic. mem_realloc/free/copy/set stay as the low-level
reallocation/free family. Reseeded (22565 lines); C-free fixpoint holds; goldens
byte-identical; 18/18; vocab + doc-fences clean.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-08-28 02:26:15 +03:00
parent 5cab68ea2e
commit 86948d2b19
22 changed files with 3118 additions and 3069 deletions
Download patch file Download diff file Expand all files Collapse all files

11
selfhost/emit_expr.ludic
View file

@ -138,6 +138,17 @@ fn emit_call(e: Node) -> Val {
else { emit(" call i32 (ptr, ...) @printf(ptr @.fmt_int, i32 " + `{a.code})\n`) }
return val("0", "void")
}
if (name == "bytes") { # bytes(n): allocate n bytes -> a byte buffer
let n = emit_expr(e.kids[0])
let w = emit_bind(`zext i32 {n.code} to i64`)
return val(emit_bind(`call ptr @malloc(i64 {w})`), "ptr")
}
if (name == "words") { # words(n): allocate n 32-bit words
let n = emit_expr(e.kids[0])
let by = emit_bind(`mul i32 {n.code}, 4`)
let w = emit_bind(`zext i32 {by} to i64`)
return val(emit_bind(`call ptr @malloc(i64 {w})`), "words")
}
if (name == "fx") { let a = emit_expr(e.kids[0]); return val(emit_bind(`shl i32 {a.code}, 16`), "fixed") }
if (name == "flr") { let a = emit_expr(e.kids[0]); return val(emit_bind(`ashr i32 {a.code}, 16`), "int") }
if is_intrinsic(name) { return emit_intrinsic(name, e) }