Support reusable boxes for Float32x4 fields

runtime/vm/intermediate_language.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/intermediate_language.h"
 
 #include "vm/bigint_operations.h"
 #include "vm/bit_vector.h"
 #include "vm/dart_entry.h"
 #include "vm/flow_graph_allocator.h"
@@ skipping 139 matching lines @@
       && field()->IsPotentialUnboxedField();
 }
 
 
 Representation LoadFieldInstr::representation() const {
   if (IsUnboxedLoad()) {
     const intptr_t cid = field()->UnboxedFieldCid();
     switch (cid) {
       case kDoubleCid:
         return kUnboxedDouble;
-      // TODO(johnmccutchan): Add kFloat32x4Cid here.
+      case kFloat32x4Cid:
+        return kUnboxedFloat32x4;
       default:
         UNREACHABLE();
     }
   }
   return kTagged;
 }
 
 
 bool StoreInstanceFieldInstr::IsUnboxedStore() const {
   return FLAG_unbox_double_fields && field().IsUnboxedField();
 }
 
 
 bool StoreInstanceFieldInstr::IsPotentialUnboxedStore() const {
   return FLAG_unbox_double_fields && field().IsPotentialUnboxedField();
 }
 
 
 Representation StoreInstanceFieldInstr::RequiredInputRepresentation(
   intptr_t index) const {
   ASSERT((index == 0) || (index == 1));
   if ((index == 1) && IsUnboxedStore()) {
     const intptr_t cid = field().UnboxedFieldCid();
     switch (cid) {
       case kDoubleCid:
         return kUnboxedDouble;
+      case kFloat32x4Cid:
+        return kUnboxedFloat32x4;
       default:
         UNREACHABLE();
     }
   }
   return kTagged;
 }
 
 
 bool GuardFieldInstr::AttributesEqual(Instruction* other) const {
   return field().raw() == other->AsGuardField()->field().raw();
@@ skipping 2940 matching lines @@
     case Token::kTRUNCDIV: return 0;
     case Token::kMOD: return 1;
     default: UNIMPLEMENTED(); return -1;
   }
 }
 
 
 #undef __
 
 }  // namespace dart