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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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10
selfhost/emit_save.ludic
View file

@ -6,7 +6,7 @@
var g_iok: int = 0
fn emit_io(fn2: ptr, p: ptr, bytes: ptr) -> void {
let r = (("%io") + itoa(g_iok)); g_iok = g_iok + 1
let r = `%io{itoa(g_iok)}`; g_iok = g_iok + 1
emit(" "); emit(r); emit(" = call i64 @"); emit(fn2); emit("(ptr "); emit(p); emit(", i64 1, i64 "); emit(bytes); emit(", ptr %f)\n")
}
@ -20,16 +20,16 @@ fn emit_snapshot_blocks(fn2: ptr) -> void {
emit_io(fn2, "@L_freelist", "%nalive")
emit_io(fn2, "@L_kind", "%nalive")
var i = 0
while i < len(prog) { if prog[i].kind == N_VAR { emit_io(fn2, ("@g_" + prog[i].s), "4") }; i = i + 1 }
while i < len(prog) { if prog[i].kind == N_VAR { emit_io(fn2, `@g_{prog[i].s}`, "4") }; i = i + 1 }
var ci = 0
i = 0
while i < len(prog) {
if prog[i].kind == N_COMP {
let c = prog[i].s
let csz = (("%csz") + itoa(ci))
let csz = `%csz{itoa(ci)}`
emit(" "); emit(csz); emit(" = ptrtoint ptr getelementptr (%Cmp_"); emit(c); emit(", ptr null, i32 "); emit(me); emit(") to i64\n")
emit_io(fn2, ("@S_" + c), csz)
emit_io(fn2, ("@H_" + c), me)
emit_io(fn2, `@S_{c}`, csz)
emit_io(fn2, `@H_{c}`, me)
ci = ci + 1
}
i = i + 1