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;; Machine Descriptions for R8C/M16C/M32C
;; Copyright (C) 2005
;; Free Software Foundation, Inc.
;; Contributed by Red Hat.
;;
;; 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 2, 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 COPYING. If not, write to the Free
;; Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
;; 02110-1301, USA.
;; Predicates
; TRUE if the operand is a pseudo-register.
(define_predicate "m32c_pseudo"
(ior (and (match_code "reg")
(match_test "REGNO(op) >= FIRST_PSEUDO_REGISTER"))
(and (match_code "subreg")
(and (match_test "GET_CODE (XEXP (op, 0)) == REG")
(match_test "REGNO(XEXP (op,0)) >= FIRST_PSEUDO_REGISTER")))))
; Returning true causes many predicates to NOT match. We allow
; subregs for type changing, but not for size changing.
(define_predicate "m32c_wide_subreg"
(and (match_code "subreg")
(not (match_operand 0 "m32c_pseudo")))
{
unsigned int sizeo = GET_MODE_SIZE (GET_MODE (op));
unsigned int sizei = GET_MODE_SIZE (GET_MODE (XEXP (op, 0)));
sizeo = (sizeo + UNITS_PER_WORD - 1) / UNITS_PER_WORD;
sizei = (sizei + UNITS_PER_WORD - 1) / UNITS_PER_WORD;
return sizeo != sizei;
})
; TRUE for r0 through r3, or a pseudo that reload could put in r0
; through r3 (likewise for the next couple too)
(define_predicate "r0123_operand"
(ior (match_operand 0 "m32c_pseudo" "")
(and (match_code "reg")
(match_test "REGNO(op) <= R3_REGNO"))))
; TRUE for r0
(define_predicate "m32c_r0_operand"
(ior (match_operand 0 "m32c_pseudo" "")
(and (match_code "reg")
(match_test "REGNO(op) == R0_REGNO"))))
; TRUE for r1
(define_predicate "m32c_r1_operand"
(ior (match_operand 0 "m32c_pseudo" "")
(and (match_code "reg")
(match_test "REGNO(op) == R1_REGNO"))))
; TRUE for r2
(define_predicate "m32c_r2_operand"
(ior (match_operand 0 "m32c_pseudo" "")
(and (match_code "reg")
(match_test "REGNO(op) == R2_REGNO"))))
; TRUE for any general operand except r2.
(define_predicate "m32c_notr2_operand"
(and (match_operand 0 "general_operand")
(ior (not (match_code "reg"))
(match_test "REGNO(op) != R2_REGNO"))))
; TRUE for the stack pointer.
(define_predicate "m32c_sp_operand"
(ior (match_operand 0 "m32c_pseudo" "")
(and (match_code "reg")
(match_test "REGNO(op) == SP_REGNO"))))
; TRUE for control registers.
(define_predicate "cr_operand"
(match_code "reg")
"return (REGNO (op) >= SB_REGNO
&& REGNO (op) <= FLG_REGNO);")
; TRUE for $a0 or $a1.
(define_predicate "a_operand"
(match_code "reg")
"return (REGNO (op) == A0_REGNO
|| REGNO (op) == A1_REGNO);")
; TRUE for r0 through r3, or a0 or a1.
(define_predicate "ra_operand"
(and (and (match_operand 0 "register_operand" "")
(not (match_operand 1 "cr_operand" "")))
(not (match_operand 2 "m32c_wide_subreg" ""))))
; Likewise, plus TRUE for memory references.
(define_predicate "mra_operand"
(and (and (match_operand 0 "nonimmediate_operand" "")
(not (match_operand 1 "cr_operand" "")))
(not (match_operand 2 "m32c_wide_subreg" ""))))
; Likewise, plus TRUE for subregs.
(define_predicate "mras_operand"
(and (match_operand 0 "nonimmediate_operand" "")
(not (match_operand 1 "cr_operand" ""))))
; TRUE for memory, r0..r3, a0..a1, or immediates.
(define_predicate "mrai_operand"
(and (and (match_operand 0 "general_operand" "")
(not (match_operand 1 "cr_operand" "")))
(not (match_operand 2 "m32c_wide_subreg" ""))))
; Likewise, plus true for subregs.
(define_predicate "mrasi_operand"
(and (match_operand 0 "general_operand" "")
(not (match_operand 1 "cr_operand" ""))))
; TRUE for r0..r3 or memory.
(define_predicate "mr_operand"
(and (match_operand 0 "mra_operand" "")
(not (match_operand 1 "a_operand" ""))))
; TRUE for r1h. This complicated since r1h isn't a register GCC
; normally knows about.
(define_predicate "r1h_operand"
(match_code "zero_extract")
{
rtx reg = XEXP (op, 0);
rtx size = XEXP (op, 1);
rtx pos = XEXP (op, 2);
return (GET_CODE (reg) == REG
&& REGNO (reg) == R1_REGNO
&& GET_CODE (size) == CONST_INT
&& INTVAL (size) == 8
&& GET_CODE (pos) == CONST_INT
&& INTVAL (pos) == 8);
})
; TRUE if we can shift by this amount. Constant shift counts have a
; limited range.
(define_predicate "shiftcount_operand"
(ior (match_operand 0 "m32c_pseudo" "")
(and (match_operand 2 "const_int_operand" "")
(match_test "-8 <= INTVAL (op) && INTVAL (op) && INTVAL (op) <= 8"))))
; TRUE for r0..r3, a0..a1, or sp.
(define_predicate "mra_or_sp_operand"
(and (ior (match_operand 0 "mra_operand")
(match_operand 1 "m32c_sp_operand"))
(not (match_operand 2 "m32c_wide_subreg" ""))))
; TRUE for r2 or r3.
(define_predicate "m32c_r2r3_operand"
(ior (and (match_code "reg")
(ior (match_test "REGNO(op) == R2_REGNO")
(match_test "REGNO(op) == R3_REGNO")))
(and (match_code "subreg")
(match_test "GET_CODE (XEXP (op, 0)) == REG && (REGNO (XEXP (op, 0)) == R2_REGNO || REGNO (XEXP (op, 0)) == R3_REGNO)"))))
; Likewise, plus TRUE for a0..a1.
(define_predicate "m32c_r2r3a_operand"
(ior (match_operand 0 "m32c_r2r3_operand" "")
(match_operand 0 "a_operand" "")))
; These two are only for movqi - no subreg limit
(define_predicate "mra_qi_operand"
(and (and (match_operand 0 "nonimmediate_operand" "")
(not (match_operand 1 "cr_operand" "")))
(not (match_operand 1 "m32c_r2r3a_operand" ""))))
(define_predicate "mrai_qi_operand"
(and (and (match_operand 0 "general_operand" "")
(not (match_operand 1 "cr_operand" "")))
(not (match_operand 1 "m32c_r2r3a_operand" ""))))
; TRUE for comparisons we support.
(define_predicate "m32c_cmp_operator"
(match_code "eq,ne,gt,gtu,lt,ltu,ge,geu,le,leu"))
; TRUE for mem0
(define_predicate "m32c_mem0_operand"
(ior (match_operand 0 "m32c_pseudo" "")
(and (match_code "reg")
(match_test "REGNO(op) == MEM0_REGNO"))))
; TRUE for things the call patterns can return.
(define_predicate "m32c_return_operand"
(ior (match_operand 0 "m32c_r0_operand")
(ior (match_operand 0 "m32c_mem0_operand")
(match_code "parallel"))))
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