The tier mis-compiled and has been hard-gated off since 2026-06-25; overlay
gaps fall to gcc/tcc shards and the dirty-RAM interpreter, unchanged.
Re-do on master of the removal validated on the stale branch (6da8c02),
reconciled with everything master grew since the fork:
- Delete overlay_sljit.{c,h}, overlay_compile_worker.{c,h}, lib/sljit,
runtime/tests/sljit_*.c, and the runtime.cmake sources/include-dirs.
- Strip the sljit provider/backend from code_provider.{c,h},
overlay_backend.{c,h} ("sljit" in overlay_backend/PSX_OVERLAY_BACKEND now
degrades to auto so stale configs still boot), main.cpp, debug_server.c
(sljit_status/sljit_async/sljit_try TCP commands), overlay_loader.{c,h}
(live policy, JIT-on-miss, persisted-shard cache, async worker glue,
psx_sljit_call/cop2/memx host helpers — reachable only via the removed
cpu->sljit_helpers table), and cpu_state.h (SLJIT_HLP_* enum + the
sljit_helpers[] member; CPUState layout change reshards via the cg tag).
- Master-only entanglement resolved before deletion: 28165d6's Einhander WS
player-X bound emit existed in three paths (gcc code_generator, sljit,
dirty_ram_interp). The gcc shard link contract now forwards
psx_ws_player_x_bound (ABI v13, previous commit), so deleting the sljit
emit path loses no widescreen behavior; ffc6688's game-dispatch block
inside the dead psx_sljit_call helper goes with it.
- Reword comments that described sljit as a live backend (gpu.{c,h},
ws_*_detect.h, cosim_state.c, dirty_ram_interp.c, autocompile.h,
boot_state.h, config_loader.h, compile_overlays.py, and the CPS marker
comments the recompiler emits).
recompiler psxrecomp-game builds clean; game runtimes rebuilt + boot-verified
separately.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
[widescreen.cull] auto_backdrop — generic far-backdrop column preload for
16:9. A shared detector (runtime/include/ws_backdrop_detect.h) finds each
scrolling-backdrop column-window generator by its /96-magic + 0x176-camX +
sra,5 divide-tail invariant and records the window's START/END bound
instructions + width (window_cols). All four execution paths route those
bounds through psx_ws_backdrop_value(orig, is_end, window_cols), which widens
the camera-tracked window by exactly the 16:9 reveal (margin scales with
window_cols; identity at 4:3 so the build stays byte-identical with widescreen
off). gcc emit + sljit + dirty-RAM interp + overlay ABI v4 / codegen ver 3.
Also: CodeGenConfig::overlay_mode — explicit [widescreen.*] per-address site
shape checks now SKIP (apply only where bytes match) instead of hard-exit in
overlay mode, because overlay regions reuse the same address for different
code across scene variants. Main-EXE mode keeps the hard error.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Matthew Stanley