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lib: extract rt module from os, sweep imports

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Hare puts runtime allocation in rt::, not os:: (ref/hare/rt/malloc.ha:27,
README). ww's `@symbol("rt_alloc") fn alloc(n: u64) *void;` lived at
lib/os/os.ww as a historical bootstrap shortcut; this commit relocates
it to a new lib/rt/malloc.ww and sweeps every site that depended on
`import os` for the alloc decl over to `import rt`.

This is commit 1 of 3 in the lib/rt extraction (#35):
  1. (this) move decl, sweep imports — preserves shape
  2. rename rt_alloc → rt_malloc (#38)
  3. nullable return type + OOM-propagating builtin lowering (#39)

No rename here. Symbol stays rt_alloc, function stays `alloc`, return
stays *void. Behavior identical — same ffi resolution outcome, just
sourced from a different module file. The rt::ensure runtime helper at
selfhost/rt/ensure.ww is its own compilation unit with a local decl and
is untouched.

Side effect: every wcc cgen file used `rt` as a local *node variable
name for "return type." `import rt;` shadows the module, so each
selfhost/cmd/wcc/{check,cgenstmt,cgenexpr,cgenutil}.ww site renamed
to `rtyp`. Mechanical follow-through; only the wcc module-import was
forced to do this rename.

Verified 132/132 + 995_self_rebuild byte-identity (5 wwstage tools
round-trip byte-identical).
This commit is contained in:
Hojun-Cho
2026-05-20 20:39:52 +09:00
parent a1ee817906
commit d68d3c7eb4
34 changed files with 530 additions and 488 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
selfhost/cmd/wcc/cgenstmt.ww
View File

@@ -184,8 +184,8 @@ fn cgreturn(c: *cgen, n: *node) void = {
};
};
if (calleename.len > 0) {
let rt: *node = fnretlookupmod(c, calleename, cmod);
if (istaggedtype(c, rt)) { forwardtagged = true; };
let rtyp: *node = fnretlookupmod(c, calleename, cmod);
if (istaggedtype(c, rtyp)) { forwardtagged = true; };
};
};
};
@@ -1225,10 +1225,10 @@ fn cgmlet(c: *cgen, n: *node) void = {
};
};
if (cnm.len > 0) {
let rt: *node = fnretlookupmod(c, cnm, cmod);
if (rt != nil) {
if (rt.kind == nkind.N_TTUPLE) {
p0t = rt.list;
let rtyp: *node = fnretlookupmod(c, cnm, cmod);
if (rtyp != nil) {
if (rtyp.kind == nkind.N_TTUPLE) {
p0t = rtyp.list;
if (p0t != nil) { p1t = p0t.next; };
};
};