This patch changes C++ bitregion_start/end values from constants to poly_ints. Although it's unlikely that the size needs to be polynomial in practice, the offset could be with future language extensions. 2017-12-20 Richard Sandiford <richard.sandiford@linaro.org> Alan Hayward <alan.hayward@arm.com> David Sherwood <david.sherwood@arm.com> gcc/ * expmed.h (store_bit_field): Change bitregion_start and bitregion_end from unsigned HOST_WIDE_INT to poly_uint64. * expmed.c (adjust_bit_field_mem_for_reg, strict_volatile_bitfield_p) (store_bit_field_1, store_integral_bit_field, store_bit_field) (store_fixed_bit_field, store_split_bit_field): Likewise. * expr.c (store_constructor_field, store_field): Likewise. (optimize_bitfield_assignment_op): Likewise. Make the same change to bitsize and bitpos. * machmode.h (bit_field_mode_iterator): Change m_bitregion_start and m_bitregion_end from HOST_WIDE_INT to poly_int64. Make the same change in the constructor arguments. (get_best_mode): Change bitregion_start and bitregion_end from unsigned HOST_WIDE_INT to poly_uint64. * stor-layout.c (bit_field_mode_iterator::bit_field_mode_iterator): Change bitregion_start and bitregion_end from HOST_WIDE_INT to poly_int64. (bit_field_mode_iterator::next_mode): Update for new types of m_bitregion_start and m_bitregion_end. (get_best_mode): Change bitregion_start and bitregion_end from unsigned HOST_WIDE_INT to poly_uint64. Co-Authored-By: Alan Hayward <alan.hayward@arm.com> Co-Authored-By: David Sherwood <david.sherwood@arm.com> From-SVN: r255879
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