5c8b978817
Some RTL objects need to store a location_t. Currently, they store it in the rt_int field of union rtunion, but in a world where location_t could be 64-bit, they need to store it in a larger variable. Unfortunately, rtunion does not currently have a 64-bit int type for that purpose, so add one. In order to avoid increasing any overhead when 64-bit locations are not in use, the new field is dedicated for location_t storage only and has type "location_t" so it will only be 64-bit if necessary. This necessitates adding a new RTX format code 'L' for locations. There are very many switch statements in the codebase that inspect the RTX format code. I took the approach of finding all of them that handle code 'i' or 'n' and making sure they handle 'L' too. I am sure that some of these call sites can never see an 'L' code, but I thought it would be safer and more future-proof to handle as many as possible, given it's just a line or two to add in most cases. gcc/ChangeLog: * rtl.def (DEBUG_INSN): Use new format code 'L' for location_t fields. (INSN): Likewise. (JUMP_INSN): Likewise. (CALL_INSN): Likewise. (ASM_INPUT): Likewise. (ASM_OPERANDS): Likewise. * rtl.h (union rtunion): Add new location_t RT_LOC member for use by the 'L' format. (struct rtx_debug_insn): Adjust comment. (struct rtx_nonjump_insn): Adjust comment. (struct rtx_call_insn): Adjust comment. (XLOC): New accessor macro for rtunion::rt_loc. (X0LOC): Likewise. (XCLOC): Likewise. (INSN_LOCATION): Use XLOC instead of XUINT to retrieve a location_t. (NOTE_MARKER_LOCATION): Likewise for XCUINT -> XCLOC. (ASM_OPERANDS_SOURCE_LOCATION): Likewise. (ASM_INPUT_SOURCE_LOCATION):Likewise. (gen_rtx_ASM_INPUT): Adjust to use sL format instead of si. (gen_rtx_INSN): Adjust prototype to use location_r rather than int for the location. * cfgrtl.cc (force_nonfallthru_and_redirect): Change type of LOC local variable from int to location_t. * rtlhash.cc (add_rtx): Support 'L' format in the switch statement. * var-tracking.cc (loc_cmp): Likewise. * alias.cc (rtx_equal_for_memref_p): Likewise. * config/alpha/alpha.cc (summarize_insn): Likewise. * config/ia64/ia64.cc (rtx_needs_barrier): Likewise. * config/rs6000/rs6000.cc (rs6000_hash_constant): Likewise. * cse.cc (hash_rtx): Likewise. (exp_equiv_p): Likewise. * cselib.cc (rtx_equal_for_cselib_1): Likewise. (cselib_hash_rtx): Likewise. (cselib_expand_value_rtx_1): Likewise. * emit-rtl.cc (copy_insn_1): Likewise. (gen_rtx_INSN): Change the location argument from int to location_t, and call the corresponding gen_rtf_fmt_* function. * final.cc (leaf_renumber_regs_insn): Support 'L' format in the switch statement. * genattrtab.cc (attr_rtx_1): Likewise. * genemit.cc (gen_exp): Likewise. * gengenrtl.cc (type_from_format): Likewise. (accessor_from_format): Likewise. * gengtype.cc (adjust_field_rtx_def): Likewise. * genpeep.cc (match_rtx): Likewise; just mark gcc_unreachable() for now. * genrecog.cc (find_operand): Support 'L' format in the switch statement. (find_matching_operand): Likewise. (validate_pattern): Likewise. * gensupport.cc (subst_pattern_match): Likewise. (get_alternatives_number): Likewise. (collect_insn_data): Likewise. (alter_predicate_for_insn): Likewise. (alter_constraints): Likewise. (subst_dup): Likewise. * jump.cc (rtx_renumbered_equal_p): Likewise. * loop-invariant.cc (hash_invariant_expr_1): Likewise. * lra-constraints.cc (operands_match_p): Likewise. * lra.cc (lra_rtx_hash): Likewise. * print-rtl.cc (rtx_writer::print_rtx_operand_code_i): Refactor location_t-relevant code to... (rtx_writer::print_rtx_operand_code_L): ...new function here. (rtx_writer::print_rtx_operand): Support 'L' format in the switch statement. * print-rtl.h (rtx_writer::print_rtx_operand_code_L): Add prototype for new function. * read-rtl-function.cc (function_reader::read_rtx_operand): Support 'L' format in the switch statement. (function_reader::read_rtx_operand_i_or_n): Rename to... (function_reader::read_rtx_operand_inL): ...this, and support 'L' as well. * read-rtl.cc (apply_int_iterator): Support 'L' format in the switch statement. (rtx_reader::read_rtx_operand): Likewise. * reload.cc (operands_match_p): Likewise. * rtl.cc (rtx_format): Add new code 'L'. (rtx_equal_p): Support 'L' in the switch statement. Remove dead code in the handling for 'i' and 'n'. |
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