[Turbofan] Add ia32 support for 4 and 16 byte moves and swaps.

src/compiler/register-allocator.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/base/adapters.h"
 #include "src/compiler/linkage.h"
 #include "src/compiler/register-allocator.h"
 #include "src/string-stream.h"
 
 namespace v8 {
@@ skipping 54 matching lines @@
 }
 
 // TODO(dcarney): fix frame to allow frame accesses to half size location.
 int GetByteWidth(MachineRepresentation rep) {
   switch (rep) {
     case MachineRepresentation::kBit:
     case MachineRepresentation::kWord8:
     case MachineRepresentation::kWord16:
     case MachineRepresentation::kWord32:
     case MachineRepresentation::kTagged:
+    case MachineRepresentation::kFloat32:
       return kPointerSize;
-    case MachineRepresentation::kFloat32:
     case MachineRepresentation::kWord64:
     case MachineRepresentation::kFloat64:
       return 8;
     case MachineRepresentation::kSimd128:
       return 16;
     case MachineRepresentation::kNone:
       break;
   }
   UNREACHABLE();
   return 0;
@@ skipping 3693 matching lines @@
         }
       }
     }
   }
 }
 
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8