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;; Constraint definitions for TI C6X.
;; Copyright (C) 2010-2020 Free Software Foundation, Inc.
;; Contributed by Andrew Jenner <andrew@codesourcery.com>
;; Contributed by Bernd Schmidt <bernds@codesourcery.com>
;; Contributed by CodeSourcery.
;;
;; 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 "a" "A_REGS"
"Register file A (A0--A31).")
(define_register_constraint "b" "B_REGS"
"Register file B (B0--B31).")
(define_register_constraint "A" "PREDICATE_A_REGS"
"Predicate registers in register file A (A0--A2 on C64X and higher,
A1 and A2 otherwise).")
(define_register_constraint "B" "PREDICATE_B_REGS"
"Predicate registers in register file B (B0--B2).")
(define_register_constraint "C" "CALL_USED_B_REGS"
"A call-used register in register file B (B0--B9, B16--B31).")
(define_register_constraint "Da" "NONPREDICATE_A_REGS"
"Register file A, excluding predicate registers (A3--A31, plus A0 if
not C64X or higher).")
(define_register_constraint "Db" "NONPREDICATE_B_REGS"
"Register file B, excluding predicate registers (B3--B31).")
(define_register_constraint "Z" "PICREG"
"Register B14 (aka DP).")
(define_register_constraint "z" "SPREG"
"Register B15 (aka SP).")
(define_constraint "Iu4"
"Integer constant in the range 0 @dots{} 15, aka ucst4."
(and (match_code "const_int")
(match_test "ival >= 0 && ival <= 15")))
(define_constraint "Iu5"
"Integer constant in the range 0 @dots{} 31, aka ucst5."
(and (match_code "const_int")
(match_test "ival >= 0 && ival <= 31")))
(define_constraint "In5"
"Integer constant in the range @minus{}31 @dots{} 0, negation of ucst5."
(and (match_code "const_int")
(match_test "ival >= -31 && ival <= 0")))
(define_constraint "Is5"
"Integer constant in the range @minus{}16 @dots{} 15, aka scst5."
(and (match_code "const_int")
(match_test "ival >= -16 && ival <= 15")))
(define_constraint "I5x"
"Integer constant that can be the operand of an ADDA or a SUBA insn."
(and (match_code "const_int")
(match_test "(ival >= -31 && ival <= 31)
|| ((ival & 1) == 0 && ival >= -62 && ival <= 62)
|| ((ival & 3) == 0 && ival >= -124 && ival <= 124)
|| ((TARGET_INSNS_64 || TARGET_INSNS_67)
&& (ival & 7) == 0 && ival > 0 && ival <= 248)")))
(define_constraint "Iux"
"Integer constant that can be the operand of a long ADDA or a SUBA insn,
i.e. one involving B14 or B15 as source operand."
(and (match_code "const_int")
(and (match_test "TARGET_INSNS_64PLUS")
(match_test "ival >= 0
&& (ival < 32768
|| ((ival & 1) == 0 && ival < 65536)
|| ((ival & 3) == 0 && ival < 131072))"))))
(define_constraint "IuB"
"Integer constant in the range 0 @dots{} 65535, aka ucst16."
(and (match_code "const_int")
(match_test "ival >= 0 && ival <= 65535")))
(define_constraint "IsB"
"Integer constant in the range @minus{}32768 @dots{} 32767."
(and (match_code "const_int")
(match_test "ival >= -32768 && ival <= 32767")))
(define_constraint "IsC"
"Integer constant in the range @math{-2^{20}} @dots{} @math{2^{20} - 1}."
(and (match_code "const_int")
(match_test "ival >= -0x100000 && ival <= 0xfffff")))
(define_constraint "JA"
"@internal
Integer constant in the range 0 @dots{} 31, corresponding to an A register
number."
(and (match_code "const_int")
(match_test "ival >= 0 && ival < 32")))
(define_constraint "JB"
"@internal
Integer constant in the range 32 @dots{} 63, corresponding to a B register
number."
(and (match_code "const_int")
(match_test "ival >= 32 && ival < 64")))
(define_constraint "Jc"
"Integer constant that is a valid mask for the clr instruction"
(and (match_code "const_int")
(match_test "c6x_valid_mask_p (ival)")))
(define_constraint "Js"
"Integer constant that is a valid mask for the set instruction"
(and (match_code "const_int")
(match_test "c6x_valid_mask_p (~ival)")))
(define_memory_constraint "Q"
"Memory location with A base register."
(and (match_code "mem")
(match_test "c6x_mem_operand (op, A_REGS, false)")))
(define_memory_constraint "R"
"Memory location with B base register."
(and (match_code "mem")
(match_test "c6x_mem_operand (op, B_REGS, false)")))
(define_memory_constraint "T"
"@internal
Memory location with B base register, but not using a long offset."
(and (match_code "mem")
(match_test "c6x_mem_operand (op, B_REGS, true)")))
(define_constraint "S0"
"@internal
On C64x+ targets, a GP-relative small data reference"
(and (match_test "TARGET_INSNS_64PLUS")
(match_operand 0 "sdata_symbolic_operand")))
(define_constraint "S1"
"@internal
Any kind of @code{SYMBOL_REF}, for use in a call address."
(and (match_code "symbol_ref")
(match_operand 0 "c6x_call_operand")))
(define_constraint "S2"
"@internal
Any SYMBOL_REF or LABEL_REF."
(ior (match_code "symbol_ref") (match_code "label_ref")))
(define_constraint "S3"
"Matches a symbolic integer constant, even if invalid for PIC."
(and (match_test "CONSTANT_P (op)")
(match_test "!CONST_SCALAR_INT_P (op)")))
(define_constraint "Si"
"@internal
Any immediate value, unless it matches the S0 constraint."
(and (match_operand 0 "immediate_operand")
(match_test "!satisfies_constraint_S0 (op)")))
(define_memory_constraint "W"
"@internal
A memory operand with an address that can't be used in an unaligned access."
(and (match_code "mem")
(match_test "!c6x_legitimate_address_p_1 (GET_MODE (op), XEXP (op, 0),
reload_completed, true)")))
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