Fixed bug in pixel array inline cache on x64. The value was not...

src/x64/ic-x64.cc

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 295 matching lines @@
   // Check whether the elements is a pixel array.
   // rax: untagged index
   // rcx: elements array
   __ bind(&check_pixel_array);
   __ CompareRoot(FieldOperand(rcx, HeapObject::kMapOffset),
                  Heap::kPixelArrayMapRootIndex);
   __ j(not_equal, &slow);
   __ cmpl(rax, FieldOperand(rcx, PixelArray::kLengthOffset));
   __ j(above_equal, &slow);
   __ movq(rcx, FieldOperand(rcx, PixelArray::kExternalPointerOffset));
-  __ movb(rax, Operand(rcx, rax, times_1, 0));
+  __ movzxbq(rax, Operand(rcx, rax, times_1, 0));
   __ Integer32ToSmi(rax, rax);
   __ ret(0);
 
   // Slow case: Load name and receiver from stack and jump to runtime.
   __ bind(&slow);
   __ IncrementCounter(&Counters::keyed_load_generic_slow, 1);
   Generate(masm, ExternalReference(Runtime::kKeyedGetProperty));
   __ bind(&check_string);
   // The key is not a smi.
   // Is it a string?
@@ skipping 1000 matching lines @@
 
   // Cache miss: Jump to runtime.
   Generate(masm, ExternalReference(IC_Utility(kStoreIC_Miss)));
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal