Add test_b(Operand, immediate) to ia32 assembler, and use it where possible. ...

src/x64/codegen-x64.cc

 // Copyright 2010 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 7458 matching lines @@
                                            key.reg());
 
     __ JumpIfSmi(receiver.reg(), deferred->entry_label());
 
     // Check that the receiver has the expected map.
     // Initially, use an invalid map. The map is patched in the IC
     // initialization code.
     __ bind(deferred->patch_site());
     // Use masm-> here instead of the double underscore macro since extra
     // coverage code can interfere with the patching.  Do not use a load
-    // from the root away to load null_value, since the load must be patched
+    // from the root array to load null_value, since the load must be patched
     // with the expected receiver map, which is not in the root array.
     masm_->movq(kScratchRegister, Factory::null_value(),
                 RelocInfo::EMBEDDED_OBJECT);
     masm_->cmpq(FieldOperand(receiver.reg(), HeapObject::kMapOffset),
                 kScratchRegister);
     deferred->Branch(not_equal);
 
     // Check that the key is a non-negative smi.
     __ JumpIfNotPositiveSmi(key.reg(), deferred->entry_label());
 
@@ skipping 4381 matching lines @@
 }
 
 #endif
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64