Remove the support for jump-table switches from the x64 port as well.

src/x64/codegen-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 194 matching lines @@
   masm_->ret((scope_->num_parameters() + 1) * kPointerSize);
   DeleteFrame();
 
   // Check that the size of the code used for returning matches what is
   // expected by the debugger.
   // ASSERT_EQ(Debug::kIa32JSReturnSequenceLength,
   //          masm_->SizeOfCodeGeneratedSince(&check_exit_codesize));
 }
 
 
-void CodeGenerator::GenerateFastCaseSwitchJumpTable(SwitchStatement* a,
-                                                    int b,
-                                                    int c,
-                                                    Label* d,
-                                                    Vector<Label*> e,
-                                                    Vector<Label> f) {
-  UNIMPLEMENTED();
-}
-
 void CodeGenerator::VisitStatements(ZoneList<Statement*>* a) {
   UNIMPLEMENTED();
 }
 
 void CodeGenerator::VisitBlock(Block* a) {
   UNIMPLEMENTED();
 }
 
 void CodeGenerator::VisitDeclaration(Declaration* a) {
   UNIMPLEMENTED();
@@ skipping 543 matching lines @@
 
   // Restore frame pointer and return.
   __ pop(rbp);
   __ ret(0);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal