gcc/common.md at 861d14dfa6a4e4cc7a5acf239ab7b5daf31efe2b

Richard Sandiford 8677664e02 common.md: New file.

gcc/
	* common.md: New file.
	* doc/md.texi: Update description of generic, machine-independent
	constraints.
	* config/s390/constraints.md (e): Delete.
	* Makefile.in (md_file): Include common.md.
	* config/m32c/t-m32c (md_file): Likewise.
	* genpreds.c (general_mem): New array.
	(generic_constraint_letters): Remove constraints now defined by
	common.md.
	(add_constraint): Map TARGET_MEM_CONSTRAINT to general_mem.
	Allow the first character to be '<' or '>' as well.
	* genoutput.c (general_mem): New array.
	(indep_constraints): Remove constraints now defined by common.md.
	(note_constraint): Map TARGET_MEM_CONSTRAINT to general_mem.
	Remove special handling of 'm'.
	* ira-costs.c (record_reg_classes): Remove special handling of
	constraints now defined by common.md.
	* ira.c (ira_setup_alts, ira_get_dup_out_num): Likewise.
	* ira-lives.c (single_reg_class): Likewise.
	(ira_implicitly_set_insn_hard_regs): Likewise.
	* lra-constraints.c (reg_class_from_constraints): Likewise.
	(process_alt_operands, process_address, curr_insn_transform): Likewise.
	* postreload.c (reload_cse_simplify_operands): Likewise.
	* reload.c (push_secondary_reload, scratch_reload_class)
	(find_reloads, alternative_allows_const_pool_ref): Likewise.
	* reload1.c (maybe_fix_stack_asms): Likewise.
	* targhooks.c (default_secondary_reload): Likewise.
	* stmt.c (parse_output_constraint): Likewise.
	* recog.c (preprocess_constraints): Likewise.
	(constrain_operands, peep2_find_free_register): Likewise.
	(asm_operand_ok): Likewise, but add a comment saying why 'o'
	must be handled specially.

From-SVN: r211475

2014-06-11 16:59:17 +00:00

3.5 KiB

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;; Common GCC machine description file, shared by all targets. ;; Copyright (C) 2014 Free Software Foundation, Inc. ;; ;; This file is part of GCC. ;; ;; GCC is free software; you can redistribute it and/or modify ;; it under the terms of the GNU General Public License as published by ;; the Free Software Foundation; either version 3, or (at your option) ;; any later version. ;; ;; GCC is distributed in the hope that it will be useful, ;; but WITHOUT ANY WARRANTY; without even the implied warranty of ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ;; GNU General Public License for more details. ;; ;; You should have received a copy of the GNU General Public License ;; along with GCC; see the file COPYING3. If not see ;; http://www.gnu.org/licenses/. */

(define_register_constraint "r" "GENERAL_REGS" "Matches any general register.")

(define_memory_constraint "TARGET_MEM_CONSTRAINT" "Matches any valid memory." (and (match_code "mem") (match_test "memory_address_addr_space_p (GET_MODE (op), XEXP (op, 0), MEM_ADDR_SPACE (op))")))

(define_memory_constraint "o" "Matches an offsettable memory reference." (and (match_code "mem") (match_test "offsettable_nonstrict_memref_p (op)")))

;; "V" matches TARGET_MEM_CONSTRAINTs that are rejected by "o". ;; This means that it is not a memory constraint in the usual sense, ;; since reloading the address into a base register would make the ;; address offsettable. (define_constraint "V" "Matches a non-offsettable memory reference." (and (match_code "mem") (match_test "memory_address_addr_space_p (GET_MODE (op), XEXP (op, 0), MEM_ADDR_SPACE (op))") (not (match_test "offsettable_nonstrict_memref_p (op)"))))

;; Like "V", this is not a memory constraint, since reloading the address ;; into a base register would cause it not to match. (define_constraint "<" "Matches a pre-dec or post-dec operand." (and (match_code "mem") (ior (match_test "GET_CODE (XEXP (op, 0)) == PRE_DEC") (match_test "GET_CODE (XEXP (op, 0)) == POST_DEC"))))

;; See the comment for "<". (define_constraint ">" "Matches a pre-inc or post-inc operand." (and (match_code "mem") (ior (match_test "GET_CODE (XEXP (op, 0)) == PRE_INC") (match_test "GET_CODE (XEXP (op, 0)) == POST_INC"))))

(define_address_constraint "p" "Matches a general address." (match_test "address_operand (op, VOIDmode)"))

(define_constraint "i" "Matches a general integer constant." (and (match_test "CONSTANT_P (op)") (match_test "!flag_pic || LEGITIMATE_PIC_OPERAND_P (op)")))

(define_constraint "s" "Matches a symbolic integer constant." (and (match_test "CONSTANT_P (op)") (match_test "!CONST_SCALAR_INT_P (op)") (match_test "!flag_pic || LEGITIMATE_PIC_OPERAND_P (op)")))

(define_constraint "n" "Matches a non-symbolic integer constant." (and (match_test "CONST_SCALAR_INT_P (op)") (match_test "!flag_pic || LEGITIMATE_PIC_OPERAND_P (op)")))

(define_constraint "E" "Matches a floating-point constant." (ior (match_test "CONST_DOUBLE_AS_FLOAT_P (op)") (match_test "GET_CODE (op) == CONST_VECTOR && GET_MODE_CLASS (GET_MODE (op)) == MODE_VECTOR_FLOAT")))

;; There is no longer a distinction between "E" and "F". (define_constraint "F" "Matches a floating-point constant." (ior (match_test "CONST_DOUBLE_AS_FLOAT_P (op)") (match_test "GET_CODE (op) == CONST_VECTOR && GET_MODE_CLASS (GET_MODE (op)) == MODE_VECTOR_FLOAT")))

(define_constraint "X" "Matches anything." (match_test "true"))

3.5 KiB Raw Blame History

3.5 KiB

Raw Blame History