Check for empty repetitions.

src/regexp-macro-assembler-ia32.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 726 matching lines @@
 
 
 void RegExpMacroAssemblerIA32::IfRegisterLT(int reg,
                                             int comparand,
                                             Label* if_lt) {
   __ cmp(register_location(reg), Immediate(comparand));
   BranchOrBacktrack(less, if_lt);
 }
 
 
+void RegExpMacroAssemblerIA32::IfRegisterEqPos(int reg,
+                                               Label* if_eq) {
+  __ cmp(edi, register_location(reg));
+  BranchOrBacktrack(equal, if_eq);
+}
+
+
 RegExpMacroAssembler::IrregexpImplementation
     RegExpMacroAssemblerIA32::Implementation() {
   return kIA32Implementation;
 }
 
 
 void RegExpMacroAssemblerIA32::LoadCurrentCharacter(int cp_offset,
                                                     Label* on_end_of_input,
                                                     bool check_bounds,
                                                     int characters) {
@@ skipping 265 matching lines @@
 
 
 void RegExpMacroAssemblerIA32::LoadConstantBufferAddress(Register reg,
                                                          ArraySlice* buffer) {
   __ mov(reg, buffer->array());
   __ add(Operand(reg), Immediate(buffer->base_offset()));
 }
 
 #undef __
 }}  // namespace v8::internal