When dw lowering, use the lowered unsigned mode for the shift amount.
[libfirm] / ir / lower /
drwxr-xr-x   ..
-rw-r--r-- 24669 lower_calls.c
-rw-r--r-- 4780 lower_copyb.c
-rw-r--r-- 74844 lower_dw.c
-rw-r--r-- 17827 lower_hl.c
-rw-r--r-- 27621 lower_intrinsics.c
-rw-r--r-- 11163 lower_mode_b.c
-rw-r--r-- 7977 lower_switch.c