http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51033
--- Comment #19 from Marc Glisse <marc.glisse at normalesup dot org> 2012-04-22 10:31:33 UTC --- Created attachment 27217 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27217 shuffle With this patch, g++ passes the few __builtin_shuffle tests I tried, and generates generic code for non-constant indexes and special code for constant indexes. I don't really know what to do about the testsuite. The tests exercise the backend a lot, and it probably doesn't make sense to run everything with both gcc and g++. But we still want to test that g++ accepts the syntax, and maybe even that it handles constants well. Content of the patch: - move c_build_vec_perm_expr to c-common and condition the maybe_const stuff to the dialect - adapt the C RID_BUILTIN_SHUFFLE parser code to the C++ FE (the 2 are different enough that it isn't easy to share) - remove the C_ONLY tag from __builtin_shuffle As usual, my limited knowledge of the compiler means I may have missed fundamental things.
