Fix HWI + -unsigned in combine.c
rtx_equal_for_field_assignment_p had:
x = adjust_address_nv (x, GET_MODE (y),
-subreg_lowpart_offset (GET_MODE (x),
GET_MODE (y)));
But subreg_lowpart_offset returns an unsigned int and
adjust_address_nv takes a HWI, so a subreg offset of 4 would
give a memory offset of 0x00000000fffffffffc.
2017-10-23 Richard Sandiford <richard.sandiford@linaro.org>
gcc/
* combine.c (rtx_equal_for_field_assignment_p): Use
byte_lowpart_offset.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@253997 138bc75d-0d04-0410-961f-82ee72b054a4