tomoaki
bbfc3c1d94
refactor(joinir): Phase 287 P2 - Strengthen BackEdge/latch conditions (WIP)
**Problem**: Phase 188.3 Pattern6 (nested loop) encounters infinite loop
- inner_step → inner_step (self-recursion) incorrectly classified as BackEdge
- → redirects to outer header (loop_step) instead of inner_step entry
- is_recursive_call causes inner recursion to overwrite outer latch values
- → PHI receives wrong values → i doesn't increment → infinite loop
**Fix 1: BackEdge classification strictness** (tail_call_classifier.rs)
- Add `is_target_loop_entry` parameter to classify_tail_call()
- BackEdge ONLY when target==loop_step (entry_func), not inner_step
- Prevents inner_step → inner_step from redirecting to outer header
**Fix 2: latch_incoming guard** (instruction_rewriter.rs)
- Change condition from `is_recursive_call || is_target_loop_entry`
to `is_target_loop_entry` only
- Prevents inner_step self-recursion from overwriting outer loop's latch
- set_latch_incoming() now called with correct values (verified by debug)
**Status**: 🚧 WIP - Infinite loop still occurs
- set_latch_incoming('i', BasicBlockId(8), ValueId(21)) ✅ Called correctly
- But final PHI: `phi [%4, bb8]` instead of `phi [%21, bb8]` ❌
- Root cause likely in PHI generation (merge/mod.rs), not latch_incoming
- Next: Investigate why latch_incoming values aren't used in PHI
**Files**:
- src/mir/builder/control_flow/joinir/merge/tail_call_classifier.rs
- src/mir/builder/control_flow/joinir/merge/instruction_rewriter.rs
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
2025-12-27 08:32:14 +09:00
..
2025-12-26 04:55:14 +09:00
2025-12-27 05:45:12 +09:00
2025-12-03 13:42:05 +09:00
2025-12-27 08:32:14 +09:00
2025-12-14 18:27:24 +09:00
2025-12-18 09:13:19 +09:00
2025-12-27 08:32:14 +09:00
2025-12-21 17:20:58 +09:00
2025-12-27 02:07:54 +09:00
2025-12-14 09:47:23 +09:00
2025-12-05 16:08:56 +09:00
2025-12-04 06:02:03 +09:00
2025-12-04 06:02:03 +09:00
2025-12-03 13:59:06 +09:00
2025-12-05 23:33:06 +09:00
2025-12-05 23:33:06 +09:00
2025-12-13 22:21:04 +09:00
2025-12-21 17:20:58 +09:00
2025-12-08 04:14:28 +09:00
2025-12-02 21:52:18 +09:00
2025-12-10 00:01:53 +09:00
2025-12-04 06:02:03 +09:00
2025-12-26 02:38:09 +09:00
2025-12-08 06:14:03 +09:00
2025-12-08 00:09:45 +09:00
2025-12-03 14:33:04 +09:00
2025-12-06 16:22:38 +09:00
2025-12-08 18:36:13 +09:00
2025-12-04 17:47:19 +09:00
2025-12-11 20:54:33 +09:00
2025-12-11 00:33:04 +09:00
2025-12-11 00:33:04 +09:00
2025-12-12 03:15:45 +09:00
2025-12-12 04:06:03 +09:00
2025-12-12 03:31:58 +09:00
2025-12-12 04:40:46 +09:00
2025-12-12 07:13:34 +09:00
2025-12-12 04:50:26 +09:00
2025-12-12 16:40:20 +09:00
2025-12-12 17:12:58 +09:00
2025-12-12 22:15:41 +09:00
2025-12-12 23:02:40 +09:00
2025-12-12 23:02:40 +09:00
2025-12-13 02:22:29 +09:00
2025-12-13 03:47:54 +09:00
2025-12-13 03:41:20 +09:00
2025-12-13 03:41:26 +09:00
2025-12-13 03:23:02 +09:00
2025-12-13 03:41:40 +09:00
2025-12-13 03:41:40 +09:00
2025-12-13 03:41:40 +09:00
2025-12-13 05:34:56 +09:00
2025-12-13 05:34:56 +09:00
2025-12-13 05:35:04 +09:00
2025-12-13 05:35:14 +09:00
2025-12-13 05:35:35 +09:00
2025-12-13 21:32:35 +09:00
2025-12-13 16:20:33 +09:00
2025-12-13 19:01:14 +09:00
2025-12-13 19:01:14 +09:00
2025-12-13 19:01:14 +09:00
2025-12-14 05:24:31 +09:00
2025-12-14 05:55:21 +09:00
2025-12-14 05:27:39 +09:00
2025-12-14 05:24:31 +09:00
2025-12-14 05:24:31 +09:00
2025-12-15 11:47:58 +09:00
2025-12-14 06:25:42 +09:00
2025-12-14 09:19:00 +09:00
2025-12-14 09:19:00 +09:00
2025-12-15 06:00:48 +09:00
2025-12-12 03:15:45 +09:00
2025-12-08 21:26:57 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-12 04:19:06 +09:00
2025-12-12 04:19:06 +09:00
2025-12-11 02:35:31 +09:00
2025-12-12 03:15:45 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 13:13:08 +09:00
2025-12-12 03:15:45 +09:00
2025-12-12 04:19:06 +09:00
2025-12-12 04:19:06 +09:00
2025-12-11 15:08:14 +09:00
2025-12-11 15:08:14 +09:00
2025-12-07 21:02:20 +09:00
2025-12-07 21:02:20 +09:00
2025-12-12 05:07:01 +09:00
2025-12-12 17:51:53 +09:00
2025-12-12 18:08:00 +09:00
2025-12-12 18:45:08 +09:00
2025-12-12 22:51:21 +09:00
2025-12-12 22:51:21 +09:00
2025-12-12 23:02:40 +09:00
2025-12-13 03:23:02 +09:00
2025-12-13 05:34:56 +09:00
2025-12-13 05:35:04 +09:00
2025-12-13 05:35:35 +09:00
2025-12-13 05:35:35 +09:00
2025-12-05 16:06:39 +09:00
2025-12-06 11:10:38 +09:00
2025-12-12 04:19:06 +09:00
2025-12-10 18:45:04 +09:00
2025-12-10 19:08:18 +09:00
2025-12-10 22:48:45 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 02:35:31 +09:00
2025-12-11 15:08:14 +09:00
2025-11-23 05:53:27 +09:00
2025-12-07 21:02:20 +09:00
2025-12-14 03:36:45 +09:00
2025-12-14 21:28:41 +09:00
2025-12-14 21:28:41 +09:00
2025-12-15 22:12:33 +09:00
2025-12-10 21:53:27 +09:00
2025-12-12 23:11:45 +09:00
2025-12-10 00:29:25 +09:00
2025-12-04 03:58:02 +09:00
2025-12-04 12:40:01 +09:00
2025-11-21 07:00:05 +09:00
2025-11-21 08:03:03 +09:00
2025-11-21 08:03:03 +09:00
2025-12-08 15:17:53 +09:00
2025-11-20 17:10:03 +09:00
2025-11-20 17:10:03 +09:00
2025-11-20 17:10:03 +09:00