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Phase 7g: the compiler builds its IR with interpolation, not +

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Answering your readability point directly: the compiler's own string-building —
left uglier by the 7c `+` migration, e.g. `emit_bind(("load i32, ptr " + ip))` —
now reads as interpolation:

  emit_bind(("load i32, ptr " + ip))            -> emit_bind(`load i32, ptr {ip}`)
  emit_bind(("icmp eq i32 " + (kv + (", " + itoa(ak)))))
                                                -> emit_bind(`icmp eq i32 {kv}, {itoa(ak)}`)
  perr(("assign to unknown " + t.s))            -> perr(`assign to unknown {t.s}`)

164 concat chains across selfhost converted by a tool that flattens the `+` tree,
keeps call/index parens (only grouping parens are rewritten), and converts only
**brace-free** literals — LLVM IR structure strings full of `{`/`}` stay as `+`
rather than becoming awkward `{{`/`}}`. No new language surface; interpolation
already desugars to the same concat.

Reseeded (22565 lines); C-free fixpoint holds byte-for-byte (the strongest proof
the reconstruction is exact); goldens identical; 18/18.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-08-28 01:30:37 +03:00
parent 4faf91abdc
commit df6955e609
20 changed files with 566 additions and 566 deletions
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4
selfhost/emit_addr.ludic
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@ -8,9 +8,9 @@ var g_addr_ty: ptr # out-param: the type at the computed address
fn emit_member_addr(e: Node) -> ptr {
let base = emit_expr(e.a)
let s = layout_node(base.ty)
if (s == null) { perr((("member access on non-aggregate ") + base.ty)) }
if (s == null) { perr(`member access on non-aggregate {base.ty}`) }
let fidx = field_index(s, e.s)
if fidx < 0 { perr(("no such field " + e.s)) }
if fidx < 0 { perr(`no such field {e.s}`) }
g_addr_ty = field_type(s, e.s)
let r = nreg()
emit(" "); emit(r); emit(" = getelementptr inbounds "); emit(layout_ty(base.ty))