docs(wasm32): note per-op TCI needed to isolate store bug

2026-07-21 20:42:01 -04:00
parent 7cab93ede7
commit b3ca9f1eb6
1 changed files with 3 additions and 2 deletions
@@ -3375,8 +3375,9 @@ static void tcg_out_qemu_st(TCGContext *s, TCGOpcode opc, const TCGArg *args, bo
    /* ponytail: Store-Containing TBs Run on TCI - Upstream qemu-wasm sets this for every guest store;
     * the compiled restartable-block store path is unfinished upstream (never runs there) and corrupts
     * state (uzlib inflate reader font prewarm faults; native is fine). Ceiling: store-containing TBs
-     * interpreted (perf cost, dominates book open). Upgrade path: make compiled stores rewind-safe in
-     * tcg_wasm_out_qemu_st, then drop this. See docs/wasm-inflate-panic.md. */
+     * interpreted (perf cost). Isolation needs per-op TCI (backend is whole-TB only) or reading the
+     * generated wasm; forcing loads-to-TCI instead also masks it because load TBs superset store TBs.
+     * Upgrade path: rewind-safe compiled stores, then drop this. See docs/wasm-inflate-panic.md. */
    wasm_tci_only_tb = true;
 }
 static void tcg_out_deposit_i32(TCGContext *s, TCGOpcode opc, TCGReg dest, TCGReg arg1, TCGReg arg2, int pos, int len)