Unbox phis with Float32x4 or Uint32x4 type

runtime/vm/flow_graph_optimizer.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/flow_graph_optimizer.h"
 
 #include "vm/bit_vector.h"
 #include "vm/cha.h"
 #include "vm/flow_graph_builder.h"
 #include "vm/flow_graph_compiler.h"
@@ skipping 404 matching lines @@
     } else {
       deopt_target = insert_before = use->instruction();
     }
 
     InsertConversion(from_rep, to_rep, use, insert_before, deopt_target);
   }
 }
 
 
 void FlowGraphOptimizer::SelectRepresentations() {
-  // Convervatively unbox all phis that were proven to be of type Double.
+  // Convervatively unbox all phis that were proven to be of Double,
+  // Float32x4, or Uint32x4.
   for (intptr_t i = 0; i < block_order_.length(); ++i) {
     JoinEntryInstr* join_entry = block_order_[i]->AsJoinEntry();
     if (join_entry != NULL) {
       for (PhiIterator it(join_entry); !it.Done(); it.Advance()) {
         PhiInstr* phi = it.Current();
         ASSERT(phi != NULL);
         if (phi->Type()->ToCid() == kDoubleCid) {
           phi->set_representation(kUnboxedDouble);
+        } else if (phi->Type()->ToCid() == kFloat32x4Cid) {
+          phi->set_representation(kUnboxedFloat32x4);
+        } else if (phi->Type()->ToCid() == kUint32x4Cid) {
+          phi->set_representation(kUnboxedUint32x4);
         }
       }
     }
   }
 
   // Process all instructions and insert conversions where needed.
   GraphEntryInstr* graph_entry = block_order_[0]->AsGraphEntry();
 
   // Visit incoming parameters and constants.
   for (intptr_t i = 0; i < graph_entry->initial_definitions()->length(); i++) {
@@ skipping 6047 matching lines @@
 
   // Insert materializations at environment uses.
   const Class& cls = Class::Handle(alloc->constructor().Owner());
   for (intptr_t i = 0; i < exits.length(); i++) {
     CreateMaterializationAt(exits[i], alloc, cls, *fields);
   }
 }
 
 
 }  // namespace dart