Collect type feedback for fields.

runtime/vm/flow_graph_compiler_x64.cc

 // Copyright (c) 2013, 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/globals.h"  // Needed here to get TARGET_ARCH_X64.
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/flow_graph_compiler.h"
 
 #include "lib/error.h"
@@ skipping 608 matching lines @@
 }
 
 
 void FlowGraphCompiler::EmitInstructionPrologue(Instruction* instr) {
   if (!is_optimizing()) {
     if (FLAG_enable_type_checks && instr->IsAssertAssignable()) {
       AssertAssignableInstr* assert = instr->AsAssertAssignable();
       AddCurrentDescriptor(PcDescriptors::kDeoptBefore,
                            assert->deopt_id(),
                            assert->token_pos());
+    } else if (instr->IsGuardField()) {
+      GuardFieldInstr* guard = instr->AsGuardField();
+      AddCurrentDescriptor(PcDescriptors::kDeoptBefore,
+                           guard->deopt_id(),
+                           Scanner::kDummyTokenIndex);
     }
     AllocateRegistersLocally(instr);
   }
 }
 
 
 void FlowGraphCompiler::EmitInstructionEpilogue(Instruction* instr) {
   if (is_optimizing()) return;
   Definition* defn = instr->AsDefinition();
   if ((defn != NULL) && defn->is_used()) {
@@ skipping 1056 matching lines @@
 void ParallelMoveResolver::Exchange(const Address& mem1, const Address& mem2) {
   __ Exchange(mem1, mem2);
 }
 
 
 #undef __
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64