VM: Remove more duplicate code between AOT and JIT compiler.

runtime/vm/flow_graph_inliner.cc

Index: runtime/vm/flow_graph_inliner.cc
diff --git a/runtime/vm/flow_graph_inliner.cc b/runtime/vm/flow_graph_inliner.cc
index 8a9cd33f3337111040066bdb94e85432aa1aa57d..9a68b00919ec0323c4c90f7b7e165b9fe890ea2d 100644
--- a/runtime/vm/flow_graph_inliner.cc
+++ b/runtime/vm/flow_graph_inliner.cc
@@ -844,7 +844,7 @@ class CallSiteInliner : public ValueObject {
 
             // Optimize (a << b) & c patterns, merge instructions. Must occur
             // before 'SelectRepresentations' which inserts conversion nodes.
-            optimizer.TryOptimizePatterns();
+            callee_graph->TryOptimizePatterns();
             DEBUG_ASSERT(callee_graph->VerifyUseLists());
           } else {
             JitOptimizer optimizer(callee_graph);
@@ -860,7 +860,7 @@ class CallSiteInliner : public ValueObject {
 
             // Optimize (a << b) & c patterns, merge instructions. Must occur
             // before 'SelectRepresentations' which inserts conversion nodes.
-            optimizer.TryOptimizePatterns();
+            callee_graph->TryOptimizePatterns();
             DEBUG_ASSERT(callee_graph->VerifyUseLists());
           }
         }