[csa] Improve propagation of deferred block mark

src/compiler/schedule.cc

Index: src/compiler/schedule.cc
diff --git a/src/compiler/schedule.cc b/src/compiler/schedule.cc
index eb3dda8c260547ed7f0981d4c3dcc90d98b74a6b..dcc84b31edbc9b57eff8ee03f0866a8993b1506d 100644
--- a/src/compiler/schedule.cc
+++ b/src/compiler/schedule.cc
@@ -407,7 +407,7 @@ void Schedule::PropagateDeferredMark() {
       if (!block->deferred()) {
         bool deferred = block->PredecessorCount() > 0;
         for (auto pred : block->predecessors()) {
-          if (!pred->deferred()) {
+          if (!pred->deferred() && (pred->rpo_number() < block->rpo_number())) {
             deferred = false;
           }
         }