[turbofan] Fix missing machine type for float32/float64 array accesses.

src/compiler/access-builder.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/compiler/access-builder.h"
 #include "src/types-inl.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
@@ skipping 88 matching lines @@
       return {kTypedArrayBoundsCheck, taggedness, header_size,
               Type::Unsigned32(), kMachUint16};
     case kExternalInt32Array:
       return {kTypedArrayBoundsCheck, taggedness, header_size, Type::Signed32(),
               kMachInt32};
     case kExternalUint32Array:
       return {kTypedArrayBoundsCheck, taggedness, header_size,
               Type::Unsigned32(), kMachUint32};
     case kExternalFloat32Array:
       return {kTypedArrayBoundsCheck, taggedness, header_size, Type::Number(),
-              kRepFloat32};
+              kMachFloat32};
     case kExternalFloat64Array:
       return {kTypedArrayBoundsCheck, taggedness, header_size, Type::Number(),
-              kRepFloat64};
+              kMachFloat64};
   }
   UNREACHABLE();
   return {kTypedArrayBoundsCheck, kUntaggedBase, 0, Type::None(), kMachNone};
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8