phase29ao(p40): release adopt pattern3 if-phi subset

src/mir/builder/control_flow/joinir/patterns/router.rs

@@ -392,6 +392,17 @@ pub(crate) fn route_loop_pattern(
                 PlanVerifier::verify(&core_plan)?;
                 return PlanLowerer::lower(builder, core_plan, ctx);
             }
+            if let Some(core_plan) =
+                composer::try_release_adopt_core_plan_for_pattern3_ifphi(
+                    builder,
+                    ctx,
+                    &domain_plan,
+                    &outcome,
+                )?
+            {
+                PlanVerifier::verify(&core_plan)?;
+                return PlanLowerer::lower(builder, core_plan, ctx);
+            }
         }
 
         return lower_via_plan(builder, domain_plan, ctx);