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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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6
selfhost/emit_machine.ludic
View file

@ -4,7 +4,7 @@
fn emit_machine(st: Node) -> void {
let regv = emit_expr(st.a)
let s = emit_bind(("call i32 @fn_rt_reg(i32 " + (regv.code + ")")))
let s = emit_bind(`call i32 @fn_rt_reg(i32 {regv.code})`)
if nmach < len(mach_stk) { mach_stk[nmach] = st } else { push(mach_stk, st) }
nmach = nmach + 1
let endl = lbl("smend")
@ -12,7 +12,7 @@ fn emit_machine(st: Node) -> void {
while i < len(st.kids) {
let state = st.kids[i]
let v = emit_expr(state.b)
let c = emit_bind(("icmp eq i32 " + (s + (", " + v.code))))
let c = emit_bind(`icmp eq i32 {s}, {v.code}`)
let body = lbl("sbody"); let nxt = lbl("sarm")
emit(" br i1 "); emit(c); emit(", label %"); emit(body); emit(", label %"); emit(nxt); emit("\n")
emit(body); emit(":\n"); g_term = false
@ -32,7 +32,7 @@ fn emit_become(st: Node) -> void {
var target: Node = null
var i = 0
while i < len(m.kids) { if (m.kids[i].s == st.s) { target = m.kids[i] }; i = i + 1 }
if (target == null) { perr(("become: no state " + st.s)) }
if (target == null) { perr(`become: no state {st.s}`) }
let regv = emit_expr(m.a)
let sv = emit_expr(target.b)
emit(" call void @fn_rt_set_reg(i32 "); emit(regv.code); emit(", i32 "); emit(sv.code); emit(")\n")