[Bug middle-end/19206] New: [cc0] insn-output.c should optimize sign-tests better

[steven at gcc dot gnu dot org]

Item 122 from the old PROBLEMS file (no test case available):

----------------------------------------
When insn-output.c turns a bit-test into a sign-test, it should
see whether the condition code is already set up with that sign.
----------------------------------------

-- 
           Summary: [cc0] insn-output.c should optimize sign-tests better
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: enhancement
          Priority: P2
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: steven at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19206