* Move irregexp backtrack stack to external memory area, instead of the system stack.

src/regexp-macro-assembler-irregexp.cc

 // Copyright 2008 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 71 matching lines @@
   }
 }
 
 
 void RegExpMacroAssemblerIrregexp::PopRegister(int register_index) {
   Emit(BC_POP_REGISTER);
   Emit(register_index);
 }
 
 
-void RegExpMacroAssemblerIrregexp::PushRegister(int register_index) {
+void RegExpMacroAssemblerIrregexp::PushRegister(
+    int register_index,
+    StackCheckFlag check_stack_limit) {
   ASSERT(register_index >= 0);
   Emit(BC_PUSH_REGISTER);
   Emit(register_index);
 }
 
 
 void RegExpMacroAssemblerIrregexp::WriteCurrentPositionToRegister(
     int register_index, int cp_offset) {
   ASSERT(register_index >= 0);
   Emit(BC_SET_REGISTER_TO_CP);
@@ skipping 40 matching lines @@
   Emit(register_index);
   Emit32(by);
 }
 
 
 void RegExpMacroAssemblerIrregexp::PopCurrentPosition() {
   Emit(BC_POP_CP);
 }
 
 
-void RegExpMacroAssemblerIrregexp::PushCurrentPosition() {
+void RegExpMacroAssemblerIrregexp::PushCurrentPosition(
+    StackCheckFlag check_stack_limit) {
   Emit(BC_PUSH_CP);
   Emit32(0);  // Current position offset.
 }
 
 
 void RegExpMacroAssemblerIrregexp::Backtrack() {
   Emit(BC_POP_BT);
 }
 
 
 void RegExpMacroAssemblerIrregexp::GoTo(Label* l) {
   Emit(BC_GOTO);
   EmitOrLink(l);
 }
 
 
-void RegExpMacroAssemblerIrregexp::PushBacktrack(Label* l) {
+void RegExpMacroAssemblerIrregexp::PushBacktrack(
+    Label* l,
+    StackCheckFlag check_stack_limit) {
   Emit(BC_PUSH_BT);
   EmitOrLink(l);
 }
 
 
 void RegExpMacroAssemblerIrregexp::Succeed() {
   Emit(BC_SUCCEED);
 }
 
 
@@ skipping 253 matching lines @@
   buffer_ = Vector<byte>::New(old_buffer.length() * 2);
   own_buffer_ = true;
   memcpy(buffer_.start(), old_buffer.start(), old_buffer.length());
   if (old_buffer_was_our_own) {
     old_buffer.Dispose();
   }
 }
 
 
 } }  // namespace v8::internal