Correct bug with left shift on X64 platform from change 4571 (http://code.goo...

src/x64/macro-assembler-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 1209 matching lines @@
       j(negative, on_not_smi_result);
     }
     shr(dst, Immediate(shift_value + kSmiShift));
     shl(dst, Immediate(kSmiShift));
   }
 }
 
 
 void MacroAssembler::SmiShiftLeftConstant(Register dst,
                                           Register src,
-                                          int shift_value,
-                                          Label* on_not_smi_result) {
+                                          int shift_value) {
   if (!dst.is(src)) {
     movq(dst, src);
   }
   if (shift_value > 0) {
     shl(dst, Immediate(shift_value));
   }
 }
 
 
 void MacroAssembler::SmiShiftLeft(Register dst,
                                   Register src1,
-                                  Register src2,
-                                  Label* on_not_smi_result) {
+                                  Register src2) {
   ASSERT(!dst.is(rcx));
   Label result_ok;
   // Untag shift amount.
   if (!dst.is(src1)) {
     movq(dst, src1);
   }
   SmiToInteger32(rcx, src2);
   // Shift amount specified by lower 5 bits, not six as the shl opcode.
   and_(rcx, Immediate(0x1f));
   shl_cl(dst);
@@ skipping 1501 matching lines @@
 CodePatcher::~CodePatcher() {
   // Indicate that code has changed.
   CPU::FlushICache(address_, size_);
 
   // Check that the code was patched as expected.
   ASSERT(masm_.pc_ == address_ + size_);
   ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap);
 }
 
 } }  // namespace v8::internal