[Bug tree-optimization/37709] [4.4 Regression] inliner gone crazy

[rguenth at gcc dot gnu dot org]

------- Comment #4 from rguenth at gcc dot gnu dot org  2008-10-02 12:56 -------
      /* When we are not doing full debug info, we however can keep around
         only the used variables for cfgexpand's memory packing saving quite
         a lot of memory.  */
      else if (debug_info_level == DINFO_LEVEL_NORMAL
               || debug_info_level == DINFO_LEVEL_VERBOSE
               /* Removing declarations before inlining is going to affect
                  DECL_UID that in turn is going to affect hashtables and
                  code generation.  */
               || !cfun->after_inlining)
        unused = false;

the last check makes us blow up for -g0, otherwise we blow up because we
retain dead variables for debugging purposes.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37709