[regexp] Remove remainder of native RegExpExecStub

src/x64/code-stubs-x64.cc

Index: src/x64/code-stubs-x64.cc
diff --git a/src/x64/code-stubs-x64.cc b/src/x64/code-stubs-x64.cc
index fc080f4c4cc2fc63abbf122d7d4f4e23b903892d..3a1edf4c5e848df960b974bf7df26e70122ad131 100644
--- a/src/x64/code-stubs-x64.cc
+++ b/src/x64/code-stubs-x64.cc
@@ -350,85 +350,6 @@ void MathPowStub::Generate(MacroAssembler* masm) {
   __ ret(0);
 }
 
-void RegExpExecStub::Generate(MacroAssembler* masm) {
-#ifdef V8_INTERPRETED_REGEXP
-  // This case is handled prior to the RegExpExecStub call.
-  __ Abort(kUnexpectedRegExpExecCall);
-#else  // V8_INTERPRETED_REGEXP
-  // Isolates: note we add an additional parameter here (isolate pointer).
-  static const int kRegExpExecuteArguments = 9;
-  int argument_slots_on_stack =
-      masm->ArgumentStackSlotsForCFunctionCall(kRegExpExecuteArguments);
-  __ EnterApiExitFrame(argument_slots_on_stack);
-
-  // Argument 9: Pass current isolate address.
-  __ LoadAddress(kScratchRegister,
-                 ExternalReference::isolate_address(isolate()));
-  __ movq(Operand(rsp, (argument_slots_on_stack - 1) * kRegisterSize),
-          kScratchRegister);
-
-  // Argument 8: Indicate that this is a direct call from JavaScript.
-  __ movq(Operand(rsp, (argument_slots_on_stack - 2) * kRegisterSize),
-          Immediate(1));
-
-  // Argument 7: Start (high end) of backtracking stack memory area.
-  ExternalReference address_of_regexp_stack_memory_address =
-      ExternalReference::address_of_regexp_stack_memory_address(isolate());
-  ExternalReference address_of_regexp_stack_memory_size =
-      ExternalReference::address_of_regexp_stack_memory_size(isolate());
-  __ Move(kScratchRegister, address_of_regexp_stack_memory_address);
-  __ movp(r12, Operand(kScratchRegister, 0));
-  __ Move(kScratchRegister, address_of_regexp_stack_memory_size);
-  __ addp(r12, Operand(kScratchRegister, 0));
-  __ movq(Operand(rsp, (argument_slots_on_stack - 3) * kRegisterSize), r12);
-
-  // Argument 6: Set the number of capture registers to zero to force global
-  // regexps to behave as non-global.  This does not affect non-global regexps.
-  // Argument 6 is passed in r9 on Linux and on the stack on Windows.
-#ifdef _WIN64
-  __ movq(Operand(rsp, (argument_slots_on_stack - 4) * kRegisterSize),
-          Immediate(0));
-#else
-  __ Set(r9, 0);
-#endif
-
-  // Argument 5: static offsets vector buffer.
-  // Argument 5 passed in r8 on Linux and on the stack on Windows.
-#ifdef _WIN64
-  __ LoadAddress(
-      r12, ExternalReference::address_of_static_offsets_vector(isolate()));
-  __ movq(Operand(rsp, (argument_slots_on_stack - 5) * kRegisterSize), r12);
-#else  // _WIN64
-  __ LoadAddress(
-      r8, ExternalReference::address_of_static_offsets_vector(isolate()));
-#endif
-
-  // Argument 2: Previous index.
-  // TODO(jgruber): Ideally, LastIndexRegister would already equal arg_reg_2,
-  // but that makes register allocation fail.
-  __ movp(arg_reg_2, RegExpExecDescriptor::LastIndexRegister());
-
-  // Argument 4: End of string data
-  // Argument 3: Start of string data
-  CHECK(arg_reg_4.is(RegExpExecDescriptor::StringEndRegister()));
-  CHECK(arg_reg_3.is(RegExpExecDescriptor::StringStartRegister()));
-
-  // Argument 1: Original subject string.
-  CHECK(arg_reg_1.is(RegExpExecDescriptor::StringRegister()));
-
-  __ addp(RegExpExecDescriptor::CodeRegister(),
-          Immediate(Code::kHeaderSize - kHeapObjectTag));
-  __ call(RegExpExecDescriptor::CodeRegister());
-
-  __ LeaveApiExitFrame(true);
-
-  // TODO(jgruber): Don't tag return value once this is supported by stubs.
-  __ Integer32ToSmi(rax, rax);
-  __ ret(0 * kPointerSize);
-#endif  // V8_INTERPRETED_REGEXP
-}
-
-
 static int NegativeComparisonResult(Condition cc) {
   DCHECK(cc != equal);
   DCHECK((cc == less) || (cc == less_equal)