[Bug target/29845] New: sh floating point emulation is inefficient

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

shortcomings of fp-bit.c (excessive packing, poor choice of algorithms),
poor handling of bitfield accesses by gcc, and problems with register
allocation /
scheduling each cost about a factor of two in performance in the floating point
emulation currently used for the SH port.

Using a hand-coded assembly language implementation can avoid these problems.


-- 
           Summary: sh floating point emulation is inefficient
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: amylaar at gcc dot gnu dot org
GCC target triplet: sh-*
 BugsThisDependsOn: 28618
OtherBugsDependingO 29842
             nThis:


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29845