This patch makes LRA use poly_int64s rather than HOST_WIDE_INTs to store a frame offset (including in things like eliminations). 2017-12-20 Richard Sandiford <richard.sandiford@linaro.org> Alan Hayward <alan.hayward@arm.com> David Sherwood <david.sherwood@arm.com> gcc/ * lra-int.h (lra_reg): Change offset from int to poly_int64. (lra_insn_recog_data): Change sp_offset from HOST_WIDE_INT to poly_int64. (lra_eliminate_regs_1, eliminate_regs_in_insn): Change update_sp_offset from a HOST_WIDE_INT to a poly_int64. (lra_update_reg_val_offset, lra_reg_val_equal_p): Take the offset as a poly_int64 rather than an int. * lra-assigns.c (find_hard_regno_for_1): Handle poly_int64 offsets. (setup_live_pseudos_and_spill_after_risky_transforms): Likewise. * lra-constraints.c (equiv_address_substitution): Track offsets as poly_int64s. (emit_inc): Check poly_int_rtx_p instead of CONST_INT_P. (curr_insn_transform): Handle the new form of sp_offset. * lra-eliminations.c (lra_elim_table): Change previous_offset and offset from HOST_WIDE_INT to poly_int64. (print_elim_table, update_reg_eliminate): Update accordingly. (self_elim_offsets): Change from HOST_WIDE_INT to poly_int64_pod. (get_elimination): Update accordingly. (form_sum): Check poly_int_rtx_p instead of CONST_INT_P. (lra_eliminate_regs_1, eliminate_regs_in_insn): Change update_sp_offset from a HOST_WIDE_INT to a poly_int64. Handle poly_int64 offsets generally. (curr_sp_change): Change from HOST_WIDE_INT to poly_int64. (mark_not_eliminable, init_elimination): Update accordingly. (remove_reg_equal_offset_note): Return a bool and pass the new offset back by pointer as a poly_int64. * lra-remat.c (change_sp_offset): Take sp_offset as a poly_int64 rather than a HOST_WIDE_INT. (do_remat): Track offsets poly_int64s. * lra.c (lra_update_insn_recog_data, setup_sp_offset): Likewise. Co-Authored-By: Alan Hayward <alan.hayward@arm.com> Co-Authored-By: David Sherwood <david.sherwood@arm.com> From-SVN: r255876
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