Generate some intrinsics using our IR.

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 255 matching lines @@
 
   ~FlowGraphCompiler();
 
   static bool SupportsUnboxedDoubles();
   static bool SupportsUnboxedMints();
   static bool SupportsSinCos();
   static bool SupportsUnboxedSimd128();
 
   // Accessors.
   Assembler* assembler() const { return assembler_; }
-  const ParsedFunction& parsed_function() const { return parsed_function_; }
+  ParsedFunction& parsed_function() const { return parsed_function_; }
   const GrowableArray<BlockEntryInstr*>& block_order() const {
     return block_order_;
   }
 
   const FlowGraph& flow_graph() const { return flow_graph_; }
 
   DescriptorList* pc_descriptors_list() const {
     return pc_descriptors_list_;
   }
   BlockEntryInstr* current_block() const { return current_block_; }
   void set_current_block(BlockEntryInstr* value) {
     current_block_ = value;
   }
   static bool CanOptimize();
   bool CanOptimizeFunction() const;
   bool CanOSRFunction() const;
   bool is_optimizing() const { return is_optimizing_; }
 
+  void EnterIntrinsicMode();
+  void ExitIntrinsicMode();
+  bool intrinsic_mode() const { return intrinsic_mode_; }
+
+  Label* intrinsic_slow_path_label() {
+    return &intrinsic_slow_path_label_;
+  }
+
   bool ForceSlowPathForStackOverflow() const;
 
   const GrowableArray<BlockInfo*>& block_info() const { return block_info_; }
   ParallelMoveResolver* parallel_move_resolver() {
     return &parallel_move_resolver_;
   }
 
   // Constructor is lighweight, major initialization work should occur here.
   // This makes it easier to measure time spent in the compiler.
   void InitCompiler();
@@ skipping 289 matching lines @@
   bool IsListClass(const Class& cls) const {
     return cls.raw() == list_class_.raw();
   }
 
   void EmitSourceLine(Instruction* instr);
 
   intptr_t GetOptimizationThreshold() const;
 
   Isolate* isolate_;
   Assembler* assembler_;
-  const ParsedFunction& parsed_function_;
+  ParsedFunction& parsed_function_;
   const FlowGraph& flow_graph_;
   const GrowableArray<BlockEntryInstr*>& block_order_;
 
   // Compiler specific per-block state.  Indexed by postorder block number
   // for convenience.  This is not the block's index in the block order,
   // which is reverse postorder.
   BlockEntryInstr* current_block_;
   ExceptionHandlerList* exception_handlers_list_;
   DescriptorList* pc_descriptors_list_;
   StackmapTableBuilder* stackmap_table_builder_;
   GrowableArray<BlockInfo*> block_info_;
   GrowableArray<CompilerDeoptInfo*> deopt_infos_;
   GrowableArray<SlowPathCode*> slow_path_code_;
   // Stores: [code offset, function, null(code)].
   const GrowableObjectArray& static_calls_target_table_;
   const bool is_optimizing_;
   // Set to true if optimized code has IC calls.
   bool may_reoptimize_;
+  // True while emitting intrinsic code.
+  bool intrinsic_mode_;
+  Label intrinsic_slow_path_label_;
 
   const Class& double_class_;
   const Class& mint_class_;
   const Class& float32x4_class_;
   const Class& float64x2_class_;
   const Class& int32x4_class_;
   const Class& list_class_;
 
   ParallelMoveResolver parallel_move_resolver_;
 
   // Currently instructions generate deopt stubs internally by
   // calling AddDeoptStub.  To communicate deoptimization environment
   // that should be used when deoptimizing we store it in this variable.
   // In future AddDeoptStub should be moved out of the instruction template.
   Environment* pending_deoptimization_env_;
 
   intptr_t entry_patch_pc_offset_;
   intptr_t patch_code_pc_offset_;
   intptr_t lazy_deopt_pc_offset_;
 
   ZoneGrowableArray<const ICData*>* deopt_id_to_ic_data_;
 
   DISALLOW_COPY_AND_ASSIGN(FlowGraphCompiler);
 };
 
 }  // namespace dart
 
 #endif  // VM_FLOW_GRAPH_COMPILER_H_