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comptime VM arc: abi(.compiler) ABI, out as sx fn, VM-native diagnostics, BuildConfig threaded

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Lands the full VM/compiler-API arc on branch reify (701/0 both gates):
- abi(.compiler) ABI replaces abi(.zig) extern compiler + the fake
  #library "compiler"; bodiless decl = compiler-API surface, bodied =
  user compiler-domain fn (lowered for VM eval, emit-skipped).
- out is a plain sx fn (libc write) — the out builtin deleted; the VM
  handles it via host-FFI. trace_resolve + interp_print_frames ported.
- 4B VM-native diagnostics: 1179/1180 render proper comptime type
  construction failed: under strict.
- S5a: build_options/set_post_link_callback on abi(.compiler) with
  BuildConfig threaded into the VM (green intermediate).
- 0522 fixed (describe(args: []Type)); regression 0638.

Strict deletion-gate down to 4 compiler_call bails (1609/1614/1615/1616)
+ 1654 (legitimate unresolvable-symbol diagnostic).
This commit is contained in:
agra
2026-06-19 07:04:10 +03:00
parent fdc4ee2331
commit 2060373c16
80 changed files with 12684 additions and 11922 deletions
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15
src/ir/lower/comptime.zig
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@@ -529,7 +529,7 @@ pub fn runComptimeTypeFunc(self: *Lowering, func_id: FuncId, span: ast.Span) ?Ty
const comptime_flat = build_opts.comptime_flat or std.c.getenv("SX_COMPTIME_FLAT") != null or
build_opts.comptime_flat_strict or std.c.getenv("SX_COMPTIME_FLAT_STRICT") != null;
const vm_result: ?interp_mod.Value = if (comptime_flat)
comptime_vm.tryEval(self.alloc, self.module, func_id)
comptime_vm.tryEval(self.alloc, self.module, func_id, null, null)
else
null;
if (comptime_flat and std.c.getenv("SX_COMPTIME_FLAT_TRACE") != null) {
@@ -543,11 +543,16 @@ pub fn runComptimeTypeFunc(self: *Lowering, func_id: FuncId, span: ast.Span) ?Ty
return checkComptimeTypeResult(self, tid_vm, span);
}
// Strict mode: NO fallback — a VM bail is a build-gating failure naming the
// reason (the interp-retirement enumeration gate). Returning null leaves the
// type unresolved → a downstream diagnostic fails the build.
// Strict mode: NO fallback — render the VM's bail reason as the SAME
// build-gating diagnostic the non-strict legacy path emits below (the VM and
// legacy set identical detail strings, e.g. "comptime define(): duplicate
// variant name 'x'"), so a comptime type-construction failure (1179/1180)
// produces its proper user diagnostic with no legacy interp in the loop — the
// 4B step toward deleting the fallback. (4B / VM-native diagnostics.)
if (build_opts.comptime_flat_strict or std.c.getenv("SX_COMPTIME_FLAT_STRICT") != null) {
std.debug.print("error: comptime type-fn bailed on the VM (strict, no fallback): {s}\n", .{comptime_vm.last_bail_reason orelse "<unknown>"});
if (self.diagnostics) |d| {
d.addFmt(.err, span, "comptime type construction failed: {s}", .{comptime_vm.last_bail_reason orelse "<unknown>"});
}
return null;
}