Revert of Expose SIMD.Float32x4 type to Javascript.

src/ppc/full-codegen-ppc.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/v8.h"
 
 #if V8_TARGET_ARCH_PPC
 
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
@@ skipping 5256 matching lines @@
     __ CompareObjectType(r3, r3, r4, FIRST_NONSTRING_TYPE);
     __ bge(if_false);
     __ lbz(r4, FieldMemOperand(r3, Map::kBitFieldOffset));
     STATIC_ASSERT((1 << Map::kIsUndetectable) < 0x8000);
     __ andi(r0, r4, Operand(1 << Map::kIsUndetectable));
     Split(eq, if_true, if_false, fall_through, cr0);
   } else if (String::Equals(check, factory->symbol_string())) {
     __ JumpIfSmi(r3, if_false);
     __ CompareObjectType(r3, r3, r4, SYMBOL_TYPE);
     Split(eq, if_true, if_false, fall_through);
-  } else if (String::Equals(check, factory->float32x4_string())) {
-    __ JumpIfSmi(r3, if_false);
-    __ CompareObjectType(r3, r3, r4, FLOAT32X4_TYPE);
-    Split(eq, if_true, if_false, fall_through);
   } else if (String::Equals(check, factory->boolean_string())) {
     __ CompareRoot(r3, Heap::kTrueValueRootIndex);
     __ beq(if_true);
     __ CompareRoot(r3, Heap::kFalseValueRootIndex);
     Split(eq, if_true, if_false, fall_through);
   } else if (String::Equals(check, factory->undefined_string())) {
     __ CompareRoot(r3, Heap::kUndefinedValueRootIndex);
     __ beq(if_true);
     __ JumpIfSmi(r3, if_false);
     // Check for undetectable objects => true.
@@ skipping 308 matching lines @@
     return ON_STACK_REPLACEMENT;
   }
 
   DCHECK(interrupt_address ==
          isolate->builtins()->OsrAfterStackCheck()->entry());
   return OSR_AFTER_STACK_CHECK;
 }
 }  // namespace internal
 }  // namespace v8
 #endif  // V8_TARGET_ARCH_PPC