Emit switchable instance calls when we don't know the complete set of receiver classes for a call s…

runtime/vm/flow_graph_compiler.h

 // 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.
 
 #ifndef VM_FLOW_GRAPH_COMPILER_H_
 #define VM_FLOW_GRAPH_COMPILER_H_
 
 #include "vm/allocation.h"
 #include "vm/assembler.h"
 #include "vm/code_descriptors.h"
@@ skipping 195 matching lines @@
  private:
   virtual void EmitNativeCode(FlowGraphCompiler* compiler) = 0;
 
   Label entry_label_;
   Label exit_label_;
 
   DISALLOW_COPY_AND_ASSIGN(SlowPathCode);
 };
 
 
-class MegamorphicSlowPath : public SlowPathCode {
- public:
-  MegamorphicSlowPath(const ICData& ic_data,
-                      intptr_t argument_count,
-                      intptr_t deopt_id,
-                      TokenPosition token_pos,
-                      LocationSummary* locs,
-                      intptr_t try_index)
-    : SlowPathCode(),
-      ic_data_(ic_data),
-      argument_count_(argument_count),
-      deopt_id_(deopt_id),
-      token_pos_(token_pos),
-      locs_(locs),
-      try_index_(try_index) {}
-  virtual ~MegamorphicSlowPath() {}
-
- private:
-  virtual void EmitNativeCode(FlowGraphCompiler* comp);
-
-  const ICData& ic_data_;
-  intptr_t argument_count_;
-  intptr_t deopt_id_;
-  TokenPosition token_pos_;
-  LocationSummary* locs_;
-  const intptr_t try_index_;  // For try/catch ranges.
-
-  DISALLOW_COPY_AND_ASSIGN(MegamorphicSlowPath);
-};
-
-
 struct CidTarget {
   intptr_t cid;
   Function* target;
   intptr_t count;
   CidTarget(intptr_t cid_arg,
             Function* target_arg,
             intptr_t count_arg)
       : cid(cid_arg), target(target_arg), count(count_arg) {}
 };
 
@@ skipping 572 matching lines @@
   const GrowableArray<const Function*>& inline_id_to_function_;
   const GrowableArray<TokenPosition>& inline_id_to_token_pos_;
   const GrowableArray<intptr_t>& caller_inline_id_;
 
   DISALLOW_COPY_AND_ASSIGN(FlowGraphCompiler);
 };
 
 }  // namespace dart
 
 #endif  // VM_FLOW_GRAPH_COMPILER_H_