http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49411
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |jakub at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-06-14
23:21:32 UTC ---
It ICEs even for positive values such as _mm_roti_epi8 (s, 76);
I think multi_arg builtin expansion needs to do constant argument checking,
at least for IX86_BUILTIN_VPROT[BWDQ]_IMM and IX86_BUILTIN_VPERMIL2P[DS]{,256}.
And for the former ones either use CODE_FOR_* of an expander that handles both
positive and negative values, where for positive one it would expand to
xop_rotl* and for negative to xop_rotr* with the shift count negated, or
the negation and choice of pattern needs to be done in
ix86_expand_multi_arg_builtin.
