[Bug optimization/14441] New: [tree-ssa] missed sib calling when types change

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

Sib calling can happen on some targets (like the PPC) when the types are always 
sign_extended when they are returned like from short to int.
short t();
int f()
{
 return t();
}

-- 
           Summary: [tree-ssa] missed sib calling when types change
           Product: gcc
           Version: tree-ssa
            Status: UNCONFIRMED
          Keywords: pessimizes-code
          Severity: normal
          Priority: P2
         Component: optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pinskia at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14441