;; Operand and operator predicates for the GCC CRIS port. ;; Copyright (C) 2005-2015 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/.

;; Operator predicates.

(define_predicate “cris_orthogonal_operator” (match_code “plus, minus, ior, and, umin”))

(define_predicate “cris_commutative_orth_op” (match_code “plus, ior, and, umin”))

;; By the name, you might think we should include MULT. We don‘t because ;; it doesn’t accept the same addressing modes as the others (only ;; registers) and there's also the problem of handling TARGET_MUL_BUG.

(define_predicate “cris_operand_extend_operator” (match_code “plus, minus, umin”))

(define_predicate “cris_additive_operand_extend_operator” (match_code “plus, minus”))

(define_predicate “cris_extend_operator” (match_code “zero_extend, sign_extend”))

(define_predicate “cris_plus_or_bound_operator” (match_code “plus, umin”))

;; Used as an operator to get a handle on a already-known-valid MEM rtx:es ;; (no need to validate the address), where some address expression parts ;; have their own match_operand.

(define_predicate “cris_mem_op” (match_code “mem”))

(define_predicate “cris_load_multiple_op” (and (match_code “parallel”) (match_test “cris_movem_load_rest_p (op, 0)”)))

(define_predicate “cris_store_multiple_op” (and (match_code “parallel”) (match_test “cris_store_multiple_op_p (op)”)))

;; Operand helper predicates.

(define_predicate “cris_bdap_const_operand” (and (match_code “label_ref, symbol_ref, const_int, const_double, const”) (ior (not (match_test “flag_pic”)) (match_test “cris_valid_pic_const (op, true)”))))

(define_predicate “cris_simple_address_operand” (ior (match_operand:SI 0 “register_operand”) (and (match_code “post_inc”) (match_test “register_operand (XEXP (op, 0), Pmode)”))))

(define_predicate “cris_simple_operand” (ior (match_operand 0 “register_operand”) (and (match_code “mem”) (match_test “cris_simple_address_operand (XEXP (op, 0), Pmode)”))))

(define_predicate “cris_nonsp_register_operand” (and (match_operand 0 “register_operand”) (match_test “op != stack_pointer_rtx”)))

;; The caller needs to use :SI. (define_predicate “cris_bdap_sign_extend_operand” ; Disabled until URL:http://gcc.gnu.org/ml/gcc-patches/2005-10/msg01376.html ; or URL:http://gcc.gnu.org/ml/gcc-patches/2005-10/msg00940.html is committed. (match_test “0”)) ; (and (match_code “sign_extend”) ; (and (match_test “MEM_P (XEXP (op, 0))”) ; (match_test “cris_simple_address_operand (XEXP (XEXP (op, 0), 0), ; Pmode)”))))

;; FIXME: Should not have to test for 1. (define_predicate “cris_scale_int_operand” (and (match_code “const_int”) (ior (ior (match_test “op == GEN_INT (4)”) (match_test “op == const2_rtx”)) (match_test “op == const1_rtx”))))

;; FIXME: Should be able to assume (reg int). (define_predicate “cris_biap_mult_operand” (and (match_code “mult”) (ior (and (match_test “register_operand (XEXP (op, 0), Pmode)”) (match_test “cris_scale_int_operand (XEXP (op, 1), Pmode)”)) (and (match_test “cris_scale_int_operand (XEXP (op, 0), Pmode)”) (match_test “register_operand (XEXP (op, 1), Pmode)”)))))

;; Operand predicates.

;; This checks a part of an address, the one that is not a plain register ;; for an addressing mode using BDAP. ;; Allowed operands are either: ;; a) a register ;; b) a CONST operand (but not a symbol when generating PIC) ;; c) a [r] or [r+] in SImode, or sign-extend from HI or QI.

(define_predicate “cris_bdap_operand” (ior (match_operand 0 “cris_bdap_const_operand”) (ior (match_operand:SI 0 “cris_simple_operand”) (match_operand:SI 0 “cris_bdap_sign_extend_operand”))))

;; This is similar to cris_bdap_operand: ;; It checks a part of an address, the one that is not a plain register ;; for an addressing mode using BDAP or BIAP. ;; Allowed operands are either: ;; a) a register ;; b) a CONST operand (but not a symbol when generating PIC) ;; c) a mult of (1, 2 or 4) and a register ;; d) a [r] or [r+] in SImode, or sign-extend from HI or QI. */

(define_predicate “cris_bdap_biap_operand” (ior (match_operand 0 “cris_bdap_operand”) (match_operand 0 “cris_biap_mult_operand”)))

;; Since with -fPIC, not all symbols are valid PIC symbols or indeed ;; general_operands, we have to have a predicate that matches it for the ;; “movsi” expander. ;; FIXME: Can s/special_// when PR 20413 is fixed.

(define_special_predicate “cris_general_operand_or_symbol” (ior (match_operand 0 “general_operand”) (and (match_code “const, symbol_ref, label_ref”) ; The following test is actually just an assertion. (match_test “cris_symbol_type_of (op) != cris_no_symbol”))))

;; A predicate for the anon movsi expansion, one that fits a PCREL ;; operand as well as general_operand.

(define_special_predicate “cris_general_operand_or_pic_source” (ior (match_operand 0 “general_operand”) (and (match_test “flag_pic”) (match_test “cris_valid_pic_const (op, false)”))))

;; Since a PLT symbol is not a general_operand, we have to have a ;; predicate that matches it when we need it. We use this in the expanded ;; “call” and “call_value” anonymous patterns.

(define_predicate “cris_nonmemory_operand_or_callable_symbol” (ior (match_operand 0 “nonmemory_operand”) (and (match_code “const”) (and (match_test “GET_CODE (XEXP (op, 0)) == UNSPEC”) (ior (match_test “XINT (XEXP (op, 0), 1) == CRIS_UNSPEC_PLT_PCREL”) (match_test “XINT (XEXP (op, 0), 1) == CRIS_UNSPEC_PCREL”))))))

;; This matches a (MEM (general_operand)) or ;; (MEM (cris_general_operand_or_symbol)). The second one isn't a valid ;; memory_operand, so we need this predicate to recognize call ;; destinations before we change them to a PLT operand (by wrapping in ;; UNSPEC CRIS_UNSPEC_PLT).

(define_predicate “cris_mem_call_operand” (and (match_code “mem”) (ior (match_operand 0 “memory_operand”) (match_test “cris_general_operand_or_symbol (XEXP (op, 0), Pmode)”))))

;; A marker for the call-insn: (const_int 0) for a call to a ;; hidden or static function and non-pic and ;; pic_offset_table_rtx for a call that might go through the ;; PLT.

(define_predicate “cris_call_type_marker” (ior (and (match_operand 0 “const_int_operand”) (match_test “op == const0_rtx”)) (and (and (match_operand 0 “register_operand”) (match_test “op == pic_offset_table_rtx”)) (match_test “flag_pic != 0”))))