http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44569
Uros Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
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AssignedTo|steven at gcc dot gnu.org |ubizjak at gmail dot com
--- Comment #6 from Uros Bizjak <ubizjak at gmail dot com> 2010-10-30 12:49:07
UTC ---
Created attachment 22206
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22206
Patch that fixes simplify_subreg_concatn
simplify_subreg_concatn passes VOIDmode of const_int elements of
(debug_insn 7 4 8 2 (var_location:V16QI vuchar (concatn:V16QI [
(const_int 1 [0x1])
(const_int 2 [0x2])
(const_int 3 [0x3])
(const_int 4 [0x4])
(const_int 1 [0x1])
(const_int 2 [0x2])
(const_int 3 [0x3])
(const_int 4 [0x4])
(const_int 1 [0x1])
(const_int 2 [0x2])
(const_int 3 [0x3])
(const_int 4 [0x4])
(const_int 1 [0x1])
(const_int 2 [0x2])
(const_int 3 [0x3])
(const_int 4 [0x4])
])) vector-shift2.c:14 -1
(nil))
to simplify_gen_subreg as inner mode.
So, in case of VOIDmode, just determine the mode of the elements by using
GET_MODE_INNER of vector mode of concatn RTX.
