ir3/legalize: insert (ss) to read consts after stc

Observed when reading consts in the preamble using alias.rt.

Signed-off-by: Job Noorman <jnoorman@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31222>

src/freedreno/ir3/ir3_legalize.c

@@ -644,7 +644,7 @@ legalize_block(struct ir3_legalize_ctx *ctx, struct ir3_block *block)
          } else {
             regmask_set(&state->needs_ss, n->dsts[0]);
          }
-      } else if (n->opc == OPC_PUSH_CONSTS_LOAD_MACRO) {
+      } else if (n->opc == OPC_PUSH_CONSTS_LOAD_MACRO || n->opc == OPC_STC) {
          state->needs_ss_for_const = true;
       }