For a few days a lot of new testsuite failures have popped up on sparc,
wherein int_mode_for_mode() gets called with "VOIDmode" as an argument
from extract_bit_field_1 because "op0" is "(const_int 0)"
I have a feeling this is a known problem, but I couldn't find any
discussions about this.
I strongly suspect the following change caused this problem:
2011-11-16 Andreas Krebbel <andreas.kreb...@de.ibm.com>
PR middle-end/50325
* expmed.c (store_bit_field_1): Use extract_bit_field on big
endian targets if the source cannot be exactly covered by word
mode chunks.
