------- Comment #6 from ubizjak at gmail dot com 2007-01-06 17:47 ------- (In reply to comment #2) > vectorization of type conversions has recently been added to autovect-branch. > It requires modeling the respective unpack and pack optabs in the machine > description.
Hm, there is no infrastructure for int<->float conversions. vectorizable_operation() calls optab_for_tree_code() with "code" argument set to FLOAT_EXPR and FIX_TRUNC_EXPR and these always return NULL. In DFmode<->SFmode case, vectorizable_operation() calls optab_for_tree_code() with VEC_PACK_MOD_EXPR and VEC_UNPACK_LO/HI_EXPR. At least the later case is intended for integer modes, as optab_for_tree_code() checks for TYPE_UNSIGNED on "type" argument. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24659
