[regexp] Remove remainder of native RegExpExecStub

src/mips64/code-stubs-mips64.cc

Index: src/mips64/code-stubs-mips64.cc
diff --git a/src/mips64/code-stubs-mips64.cc b/src/mips64/code-stubs-mips64.cc
index 7ea89d2ba9c08074937c248942ba2b60e59c9aa6..4a0e51a1d45ceb17888284ce0e534828024accbc 100644
--- a/src/mips64/code-stubs-mips64.cc
+++ b/src/mips64/code-stubs-mips64.cc
@@ -1266,86 +1266,6 @@ void JSEntryStub::Generate(MacroAssembler* masm) {
   __ Jump(ra);
 }
 
-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).
-  const int kRegExpExecuteArguments = 9;
-  const int kParameterRegisters = 8;
-  __ EnterExitFrame(false, kRegExpExecuteArguments - kParameterRegisters);
-
-  // Stack pointer now points to cell where return address is to be written.
-  // Arguments are before that on the stack or in registers, meaning we
-  // treat the return address as argument 5. Thus every argument after that
-  // needs to be shifted back by 1. Since DirectCEntryStub will handle
-  // allocating space for the c argument slots, we don't need to calculate
-  // that into the argument positions on the stack. This is how the stack will
-  // look (sp meaning the value of sp at this moment):
-  // Abi n64:
-  //   [sp + 1] - Argument 9
-  //   [sp + 0] - saved ra
-  // Abi O32:
-  //   [sp + 5] - Argument 9
-  //   [sp + 4] - Argument 8
-  //   [sp + 3] - Argument 7
-  //   [sp + 2] - Argument 6
-  //   [sp + 1] - Argument 5
-  //   [sp + 0] - saved ra
-
-  // Argument 9: Pass current isolate address.
-  __ li(t1, Operand(ExternalReference::isolate_address(isolate())));
-  __ Sd(t1, MemOperand(sp, 1 * kPointerSize));
-
-  // Argument 8: Indicate that this is a direct call from JavaScript.
-  __ li(a7, Operand(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());
-  __ li(t1, Operand(address_of_regexp_stack_memory_address));
-  __ Ld(t1, MemOperand(t1, 0));
-  __ li(t2, Operand(address_of_regexp_stack_memory_size));
-  __ Ld(t2, MemOperand(t2, 0));
-  __ daddu(a6, t1, t2);
-
-  // 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.
-  __ mov(a5, zero_reg);
-
-  // Argument 5: static offsets vector buffer.
-  __ li(
-      a4,
-      Operand(ExternalReference::address_of_static_offsets_vector(isolate())));
-
-  // Argument 4, a3: End of string data
-  // Argument 3, a2: Start of string data
-  CHECK(a3.is(RegExpExecDescriptor::StringEndRegister()));
-  CHECK(a2.is(RegExpExecDescriptor::StringStartRegister()));
-
-  // Argument 2 (a1): Previous index.
-  CHECK(a1.is(RegExpExecDescriptor::LastIndexRegister()));
-
-  // Argument 1 (a0): Subject string.
-  CHECK(a0.is(RegExpExecDescriptor::StringRegister()));
-
-  // Locate the code entry and call it.
-  Register code_reg = RegExpExecDescriptor::CodeRegister();
-  __ Daddu(code_reg, code_reg, Operand(Code::kHeaderSize - kHeapObjectTag));
-  DirectCEntryStub stub(isolate());
-  stub.GenerateCall(masm, code_reg);
-
-  __ LeaveExitFrame(false, no_reg, true);
-
-  // Return the smi-tagged result.
-  __ SmiTag(v0);
-  __ Ret();
-#endif  // V8_INTERPRETED_REGEXP
-}
-
 
 static void CallStubInRecordCallTarget(MacroAssembler* masm, CodeStub* stub) {
   // a0 : number of arguments to the construct function