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;; Constraint definitions for IA-64
;; Copyright (C) 2006, 2007 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/>.
;; Register constraints
(define_register_constraint "a" "ADDL_REGS"
"addl register")
(define_register_constraint "b" "BR_REGS"
"branch register")
(define_register_constraint "c" "PR_REGS"
"predicate register")
(define_register_constraint "d" "AR_M_REGS"
"memory pipeline application register")
(define_register_constraint "e" "AR_I_REGS"
"integer pipeline application register")
(define_register_constraint "f" "FR_REGS"
"floating-point register")
(define_register_constraint "x" "FP_REGS"
"floating-point register, excluding f31 and f127, used for fldp")
;; Integer constraints
(define_constraint "I"
"14 bit signed immediate for arithmetic instructions"
(and (match_code "const_int")
(match_test "(unsigned HOST_WIDE_INT)ival + 0x2000 < 0x4000")))
(define_constraint "J"
"22 bit signed immediate for arith instructions with r0/r1/r2/r3 source"
(and (match_code "const_int")
(match_test "(unsigned HOST_WIDE_INT)ival + 0x200000 < 0x400000")))
(define_constraint "K"
"8 bit signed immediate for logical instructions"
(and (match_code "const_int")
(match_test "(unsigned HOST_WIDE_INT)ival + 0x80 < 0x100")))
(define_constraint "L"
"8 bit adjusted signed immediate for compare pseudo-ops"
(and (match_code "const_int")
(match_test "(unsigned HOST_WIDE_INT)ival + 0x7F < 0x100")))
(define_constraint "M"
"6 bit unsigned immediate for shift counts"
(and (match_code "const_int")
(match_test "(unsigned HOST_WIDE_INT)ival < 0x40")))
(define_constraint "N"
"9 bit signed immediate for load/store post-increments"
(and (match_code "const_int")
(match_test "(unsigned HOST_WIDE_INT)ival + 0x100 < 0x200")))
(define_constraint "O"
"constant zero"
(and (match_code "const_int")
(match_test "ival == 0")))
(define_constraint "P"
"0 or -1 for dep instruction"
(and (match_code "const_int")
(match_test "ival == 0 || ival == -1")))
;; Floating-point constraints
(define_constraint "G"
"0.0 and 1.0 for fr0 and fr1"
(and (match_code "const_double")
(match_test "op == CONST0_RTX (mode) || op == CONST1_RTX (mode)")))
(define_constraint "H"
"0.0"
(and (match_code "const_double")
(match_test "op == CONST0_RTX (mode)")))
;; Extra constraints
;; Note that while this accepts mem, it only accepts non-volatile mem,
;; and so cannot be "fixed" by adjusting the address. Thus it cannot
;; and does not use define_memory_constraint.
(define_constraint "Q"
"Non-volatile memory for FP_REG loads/stores"
(and (match_operand 0 "memory_operand")
(match_test "!MEM_VOLATILE_P (op)")))
(define_constraint "R"
"1..4 for shladd arguments"
(and (match_code "const_int")
(match_test "ival >= 1 && ival <= 4")))
(define_constraint "T"
"Symbol ref to small-address-area"
(match_operand 0 "small_addr_symbolic_operand"))
;; ??? Original definition didn't test for vector only.
;; Need to verify that only used in vector context.
(define_constraint "U"
"vector zero constant"
(and (match_code "const_int,const_double,const_vector")
(match_test "op == CONST0_RTX (mode)")))
(define_constraint "W"
"An integer vector, such that conversion to an integer yields a
value appropriate for an integer 'J' constraint."
(and (match_code "const_vector")
(match_test "GET_MODE_CLASS (mode) == MODE_VECTOR_INT")
(match_test
"satisfies_constraint_J (simplify_subreg (DImode, op, mode, 0))")))
(define_constraint "Y"
"A V2SF vector containing elements that satisfy 'G'"
(and (match_code "const_vector")
(match_test "mode == V2SFmode")
(match_test "satisfies_constraint_G (XVECEXP (op, 0, 0))")
(match_test "satisfies_constraint_G (XVECEXP (op, 0, 1))")))
;; Memory constraints
(define_memory_constraint "S"
"Non-post-inc memory for asms and other unsavory creatures"
(and (match_code "mem")
(match_test "GET_RTX_CLASS (GET_CODE (XEXP (op, 0))) != RTX_AUTOINC")))
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