Add a location summary to LoadLocal, StoreLocal and ConstantVal.

vm/flow_graph_compiler_x64.cc

Index: vm/flow_graph_compiler_x64.cc
===================================================================
--- vm/flow_graph_compiler_x64.cc	(revision 7865)
+++ vm/flow_graph_compiler_x64.cc	(working copy)
@@ -471,12 +471,14 @@
 
 
 void FlowGraphCompiler::VisitUse(UseVal* val) {
-  LoadValue(RAX, val);
+  // UseVal is never visited during code generation.
+  UNREACHABLE();
 }
 
 
 void FlowGraphCompiler::VisitConstant(ConstantVal* val) {
-  LoadValue(RAX, val);
+  // Moved to intermediate_language_x64.cc.
+  UNREACHABLE();
 }
 
 
@@ -663,13 +665,14 @@
 
 
 void FlowGraphCompiler::VisitLoadLocal(LoadLocalComp* comp) {
-  __ movq(RAX, Address(RBP, comp->local().index() * kWordSize));
+  // Moved to intermediate_language_x64.cc.
+  UNREACHABLE();
 }
 
 
 void FlowGraphCompiler::VisitStoreLocal(StoreLocalComp* comp) {
-  LoadValue(RAX, comp->value());
-  __ movq(Address(RBP, comp->local().index() * kWordSize), RAX);
+  // Moved to intermediate_language_x64.cc.
+  UNREACHABLE();
 }