Expose SIMD.Float32x4 type to Javascript.

src/ia32/code-stubs-ia32.cc

 // Copyright 2012 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/v8.h"
 
 #if V8_TARGET_ARCH_IA32
 
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
@@ skipping 1686 matching lines @@
     __ j(equal, &generic_heap_number_comparison, Label::kNear);
     if (cc != equal) {
       __ mov(ecx, FieldOperand(eax, HeapObject::kMapOffset));
       __ movzx_b(ecx, FieldOperand(ecx, Map::kInstanceTypeOffset));
       // Call runtime on identical JSObjects.  Otherwise return equal.
       __ cmpb(ecx, static_cast<uint8_t>(FIRST_SPEC_OBJECT_TYPE));
       __ j(above_equal, &runtime_call, Label::kFar);
       // Call runtime on identical symbols since we need to throw a TypeError.
       __ cmpb(ecx, static_cast<uint8_t>(SYMBOL_TYPE));
       __ j(equal, &runtime_call, Label::kFar);
+      // Call runtime on identical SIMD values since we must throw a TypeError.
+      __ cmpb(ecx, static_cast<uint8_t>(FLOAT32X4_TYPE));
+      __ j(equal, &runtime_call, Label::kFar);
       if (is_strong(strength())) {
         // We have already tested for smis and heap numbers, so if both
         // arguments are not strings we must proceed to the slow case.
         __ test(ecx, Immediate(kIsNotStringMask));
         __ j(not_zero, &runtime_call, Label::kFar);
       }
     }
     __ Move(eax, Immediate(Smi::FromInt(EQUAL)));
     __ ret(0);
 
@@ skipping 3758 matching lines @@
                            Operand(ebp, 7 * kPointerSize), NULL);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_IA32