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

runtime/vm/compiler.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/compiler.h"
 
 #include "vm/assembler.h"
 
 #include "vm/ast_printer.h"
 #include "vm/block_scheduler.h"
@@ skipping 788 matching lines @@
         caller_inline_id.Add(-1);
         CSTAT_TIMER_SCOPE(thread(), graphoptimizer_timer);
 
         JitOptimizer optimizer(flow_graph);
 
         optimizer.ApplyICData();
         DEBUG_ASSERT(flow_graph->VerifyUseLists());
 
         // Optimize (a << b) & c patterns, merge operations.
         // Run early in order to have more opportunity to optimize left shifts.
-        optimizer.TryOptimizePatterns();
+        flow_graph->TryOptimizePatterns();
         DEBUG_ASSERT(flow_graph->VerifyUseLists());
 
         FlowGraphInliner::SetInliningId(flow_graph, 0);
 
         // Inlining (mutates the flow graph)
         if (FLAG_use_inlining) {
           NOT_IN_PRODUCT(TimelineDurationScope tds2(thread(),
                                                     compiler_timeline,
                                                     "Inlining"));
           CSTAT_TIMER_SCOPE(thread(), graphinliner_timer);
@@ skipping 126 matching lines @@
             LICM licm(flow_graph);
             licm.Optimize();
             DEBUG_ASSERT(flow_graph->VerifyUseLists());
           }
           flow_graph->RemoveRedefinitions();
         }
 
         // Optimize (a << b) & c patterns, merge operations.
         // Run after CSE in order to have more opportunity to merge
         // instructions that have same inputs.
-        optimizer.TryOptimizePatterns();
+        flow_graph->TryOptimizePatterns();
         DEBUG_ASSERT(flow_graph->VerifyUseLists());
 
         {
           NOT_IN_PRODUCT(TimelineDurationScope tds2(thread(),
                                                     compiler_timeline,
                                                     "DeadStoreElimination"));
           DeadStoreElimination::Optimize(flow_graph);
         }
 
         if (FLAG_range_analysis) {
@@ skipping 1212 matching lines @@
 
 
 bool BackgroundCompiler::IsDisabled() {
   UNREACHABLE();
   return true;
 }
 
 #endif  // DART_PRECOMPILED_RUNTIME
 
 }  // namespace dart