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;; Predicate definitions for Motorola 68HC11 and 68HC12.
;; Copyright (C) 2005, 2007, 2009 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/>.
;; TODO: Add a comment here.
(define_predicate "stack_register_operand"
(match_code "subreg,reg")
{
return SP_REG_P (op);
})
;; TODO: Add a comment here.
(define_predicate "d_register_operand"
(match_code "subreg,reg")
{
if (GET_MODE (op) != mode && mode != VOIDmode)
return 0;
if (GET_CODE (op) == SUBREG)
op = XEXP (op, 0);
return GET_CODE (op) == REG
&& (REGNO (op) >= FIRST_PSEUDO_REGISTER
|| REGNO (op) == HARD_D_REGNUM
|| (mode == QImode && REGNO (op) == HARD_B_REGNUM));
})
;; TODO: Add a comment here.
(define_predicate "hard_addr_reg_operand"
(match_code "subreg,reg")
{
if (GET_MODE (op) != mode && mode != VOIDmode)
return 0;
if (GET_CODE (op) == SUBREG)
op = XEXP (op, 0);
return GET_CODE (op) == REG
&& (REGNO (op) == HARD_X_REGNUM
|| REGNO (op) == HARD_Y_REGNUM
|| REGNO (op) == HARD_Z_REGNUM);
})
;; TODO: Add a comment here.
(define_predicate "hard_reg_operand"
(match_code "subreg,reg")
{
if (GET_MODE (op) != mode && mode != VOIDmode)
return 0;
if (GET_CODE (op) == SUBREG)
op = XEXP (op, 0);
return GET_CODE (op) == REG
&& (REGNO (op) >= FIRST_PSEUDO_REGISTER
|| H_REGNO_P (REGNO (op)));
})
;; TODO: Add a comment here.
(define_predicate "m68hc11_logical_operator"
(match_code "and,ior,xor")
{
return GET_CODE (op) == AND || GET_CODE (op) == IOR || GET_CODE (op) == XOR;
})
;; TODO: Add a comment here.
(define_predicate "m68hc11_arith_operator"
(match_code "and,ior,xor,plus,minus,ashift,ashiftrt,lshiftrt,rotate,rotatert")
{
return GET_CODE (op) == AND || GET_CODE (op) == IOR || GET_CODE (op) == XOR
|| GET_CODE (op) == PLUS || GET_CODE (op) == MINUS
|| GET_CODE (op) == ASHIFT || GET_CODE (op) == ASHIFTRT
|| GET_CODE (op) == LSHIFTRT || GET_CODE (op) == ROTATE
|| GET_CODE (op) == ROTATERT;
})
;; TODO: Add a comment here.
(define_predicate "m68hc11_non_shift_operator"
(match_code "and,ior,xor,plus,minus")
{
return GET_CODE (op) == AND || GET_CODE (op) == IOR || GET_CODE (op) == XOR
|| GET_CODE (op) == PLUS || GET_CODE (op) == MINUS;
})
;; TODO: Add a comment here.
(define_predicate "m68hc11_unary_operator"
(match_code "neg,not,sign_extend,zero_extend")
{
return GET_CODE (op) == NEG || GET_CODE (op) == NOT
|| GET_CODE (op) == SIGN_EXTEND || GET_CODE (op) == ZERO_EXTEND;
})
;; Return true if op is a shift operator.
(define_predicate "m68hc11_shift_operator"
(match_code "ashift,ashiftrt,lshiftrt,rotate,rotatert")
{
return GET_CODE (op) == ROTATE || GET_CODE (op) == ROTATERT
|| GET_CODE (op) == LSHIFTRT || GET_CODE (op) == ASHIFT
|| GET_CODE (op) == ASHIFTRT;
})
;; TODO: Add a comment here.
(define_predicate "m68hc11_eq_compare_operator"
(match_code "eq,ne")
{
return GET_CODE (op) == EQ || GET_CODE (op) == NE;
})
;; TODO: Add a comment here.
(define_predicate "non_push_operand"
(match_code "subreg,reg,mem")
{
if (general_operand (op, mode) == 0)
return 0;
if (push_operand (op, mode) == 1)
return 0;
return 1;
})
;; TODO: Add a comment here.
(define_predicate "splitable_operand"
(match_code "subreg,reg,mem,symbol_ref,label_ref,const_int,const_double")
{
if (general_operand (op, mode) == 0)
return 0;
if (push_operand (op, mode) == 1)
return 0;
/* Reject a (MEM (MEM X)) because the patterns that use non_push_operand
need to split such addresses to access the low and high part but it
is not possible to express a valid address for the low part. */
if (mode != QImode && GET_CODE (op) == MEM
&& GET_CODE (XEXP (op, 0)) == MEM)
return 0;
return 1;
})
;; TODO: Add a comment here.
(define_predicate "reg_or_some_mem_operand"
(match_code "subreg,reg,mem")
{
if (GET_CODE (op) == MEM)
{
rtx op0 = XEXP (op, 0);
int addr_mode;
if (symbolic_memory_operand (op0, mode))
return 1;
if (IS_STACK_PUSH (op))
return 1;
if (GET_CODE (op) == REG && reload_in_progress
&& REGNO (op) >= FIRST_PSEUDO_REGISTER
&& reg_equiv_memory_loc[REGNO (op)])
{
op = reg_equiv_memory_loc[REGNO (op)];
op = eliminate_regs (op, VOIDmode, NULL_RTX);
}
if (GET_CODE (op) != MEM)
return 0;
op0 = XEXP (op, 0);
addr_mode = m68hc11_addr_mode | (reload_completed ? ADDR_STRICT : 0);
addr_mode &= ~ADDR_INDIRECT;
return m68hc11_valid_addressing_p (op0, mode, addr_mode);
}
return register_operand (op, mode);
})
;; TODO: Add a comment here.
(define_predicate "tst_operand"
(match_code "subreg,reg,mem")
{
if (GET_CODE (op) == MEM && reload_completed == 0)
{
rtx addr = XEXP (op, 0);
if (m68hc11_auto_inc_p (addr))
return 0;
}
return nonimmediate_operand (op, mode);
})
;; TODO: Add a comment here.
(define_predicate "cmp_operand"
(match_code "subreg,reg,mem,symbol_ref,label_ref,const_int,const_double")
{
if (GET_CODE (op) == MEM)
{
rtx addr = XEXP (op, 0);
if (m68hc11_auto_inc_p (addr))
return 0;
}
return general_operand (op, mode);
})
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