Reapply "Inlining of static calls with trivial function bodies."

runtime/vm/flow_graph.h

Index: runtime/vm/flow_graph.h
diff --git a/runtime/vm/flow_graph.h b/runtime/vm/flow_graph.h
index 3d7c51d12e2f90d7b0c58fd43ef695a2fe34d4cb..4f9a2d2bd1efde0bd91d2b708c39fce61903a9ab 100644
--- a/runtime/vm/flow_graph.h
+++ b/runtime/vm/flow_graph.h
@@ -10,11 +10,14 @@
 
 namespace dart {
 
+class BindInstr;
 class BlockEntryInstr;
+class StaticCallComp;
 class Definition;
 class FlowGraphBuilder;
 class GraphEntryInstr;
 class PhiInstr;
+class ReturnInstr;
 
 // Class to incapsulate the construction and manipulation of the flow graph.
 class FlowGraph: public ZoneAllocated {
@@ -60,12 +63,19 @@ class FlowGraph: public ZoneAllocated {
     return graph_entry_;
   }
 
+  ZoneGrowableArray<ReturnInstr*>* exits() const { return exits_; }
+  void set_exits(ZoneGrowableArray<ReturnInstr*>* exits) { exits_ = exits; }
+
   intptr_t alloc_ssa_temp_index() { return current_ssa_temp_index_++; }
 
   // Operations on the flow graph.
-  void ComputeSSA();
+  void ComputeSSA(intptr_t next_virtual_register_number = 0);

[srdjan, 2012/09/05 17:40:05]

Avoid using default arguments. There is only one call site where you have to
specify 0.

[zerny-google, 2012/09/07 14:08:43]

Done. (In next CL for inlining monomorphic calls.)

   void ComputeUseLists();
 
+  void InlineCall(BindInstr* caller_instr,
+                  StaticCallComp* caller_comp,
+                  FlowGraph* callee_graph);
+
   // TODO(zerny): Once the SSA is feature complete this should be removed.
   void Bailout(const char* reason) const;
 
@@ -121,6 +131,7 @@ class FlowGraph: public ZoneAllocated {
   GrowableArray<BlockEntryInstr*> preorder_;
   GrowableArray<BlockEntryInstr*> postorder_;
   GrowableArray<BlockEntryInstr*> reverse_postorder_;
+  ZoneGrowableArray<ReturnInstr*>* exits_;
 };
 
 }  // namespace dart