mentions_reg     1499 src/jsregexp.cc       ASSERT(!trace->mentions_reg(guard->reg()));
mentions_reg     1505 src/jsregexp.cc       ASSERT(!trace->mentions_reg(guard->reg()));
mentions_reg     3815 src/jsregexp.cc       ASSERT(!trace->mentions_reg(guards->at(j)->reg()));
mentions_reg     1442 src/jsregexp.h   bool mentions_reg(int reg);