http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52537
--- Comment #5 from Thomas Koenig <tkoenig at gcc dot gnu.org> 2012-05-11 13:56:16 UTC --- Author: tkoenig Date: Fri May 11 13:56:06 2012 New Revision: 187406 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=187406 Log: 2012-05-11 Thomas Koenig <tkoe...@gcc.gnu.org> PR fortran/52537 * frontend-passes.c (optimize_op): Change old-style comparison operators to new-style, simplify switch as a result. (empty_string): New function. (get_len_trim_call): New function. (optimize_comparison): If comparing to an empty string, use comparison of len_trim to zero. Use new-style comparison operators only. (optimize_trim): Use get_len_trim_call. 2012-05-11 Thomas Koenig <tkoe...@gcc.gnu.org> PR fortran/52537 * gfortran.dg/string_compare_4.f90: New test. Added: trunk/gcc/testsuite/gfortran.dg/string_compare_4.f90 Modified: trunk/gcc/fortran/ChangeLog trunk/gcc/fortran/frontend-passes.c trunk/gcc/testsuite/ChangeLog