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[Bug middle-end/24929] New: long long shift/mask operations should be better optimized


shift/mask operations on long long like (x << 8) | ((y >> 48) & 0xffull) could
be further optimized for x86. Please see comments in the attached test case
(posted earlier in PR 17886).


-- 
           Summary: long long shift/mask operations should be better
                    optimized
           Product: gcc
           Version: 4.0.1
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tkho at ucla dot edu
  GCC host triplet: i686-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24929


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