[Bug middle-end/35412] New: Correctness with -ftrapv depends on libcall notes

["steven at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

See http://gcc.gnu.org/ml/gcc-patches/2007-10/msg01011.html

``When -ftrapv is in effect, libcalls are "necessary" so that the results of an
operation can be propagated without making the call to the libgcc functions
dead. The attached patch causes a failure in pr30286.c.''

This has to be investigated before libcall notes can be removed from the
compiler.


-- 
           Summary: Correctness with -ftrapv depends on libcall notes
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: steven at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35412