Files
hakorune/src/mir/builder/observe/ssa.rs
nyash-codex b92f85f993 refactor(mir): Remove TypeContext legacy fields (Phase 2-3/7)
完全移行→削除の安全順序(Option C)に従い、TypeContext の
deprecated フィールドと sync helpers を完全削除。

⚠️ 危険ゾーン: TypeFactsBox 等の同名フィールドと混同しないよう、
ファイル単位で手作業移行を実施。

## Changes
- Migrated all MirBuilder access sites to type_ctx.* (manual, 40+ files)
- Removed 3 deprecated fields (value_types, value_kinds, value_origin_newbox)
- Removed 2 sync helpers (sync_type_ctx_to_legacy, sync_legacy_to_type_ctx)
- Verified TypeFactsBox, CalleeGuardBox unchanged (no false positives)

## Tests
- cargo test --release --lib: 1029/1033 PASS
- TypeFactsBox integration: PASS (borrowed references unchanged)
- Deprecation warnings: 456 → 255 (-201, -44%)

## Safety Verification
 TypeFactsBox unchanged (still uses &'a BTreeMap borrowed references)
 CalleeGuardBox unchanged
 CalleeResolverBox unchanged
 BoxCompilationContext unchanged

Phase 2 Progress: 3/7 contexts complete (43%)
-  MetadataContext
-  CoreContext
-  TypeContext (this commit)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
2025-12-15 23:27:24 +09:00

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use super::super::{BasicBlockId, MirBuilder, ValueId};
/// Emit a devonly JSONL event for a PHI decision.
/// Computes predecessor metatype/originfrom the builders current maps.
pub(crate) fn emit_phi(builder: &MirBuilder, dst: ValueId, inputs: &Vec<(BasicBlockId, ValueId)>) {
// Respect env gates in hub; just build meta here.
let preds: Vec<serde_json::Value> = inputs
.iter()
.map(|(bb, v)| {
let t = builder.type_ctx.value_types.get(v).cloned();
let o = builder.type_ctx.value_origin_newbox.get(v).cloned();
serde_json::json!({
"bb": bb.0,
"v": v.0,
"type": t.as_ref().map(|tt| format!("{:?}", tt)).unwrap_or_default(),
"origin": o.unwrap_or_default(),
})
})
.collect();
let decided_t = builder
.type_ctx.value_types
.get(&dst)
.cloned()
.map(|tt| format!("{:?}", tt))
.unwrap_or_default();
let decided_o = builder
.type_ctx.value_origin_newbox
.get(&dst)
.cloned()
.unwrap_or_default();
let meta = serde_json::json!({
"dst": dst.0,
"preds": preds,
"decided_type": decided_t,
"decided_origin": decided_o,
});
let fn_name = builder
.current_function
.as_ref()
.map(|f| f.signature.name.as_str());
let region = builder.debug_current_region_id();
crate::debug::hub::emit("ssa", "phi", fn_name, region.as_deref(), meta);
}