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With this commit, the RV30 and RV40 decoders no longer clobber the fpu state for normal decoding (only error resilience can still do so). rv34_idct_add_c: 58.1 ( 1.00x) rv34_idct_add_mmxext: 16.5 ( 3.52x) rv34_idct_add_ssse3: 12.2 ( 4.76x) Reviewed-by: Lynne <dev@lynne.ee> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>