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;; Predicate definitions for Xilinx MicroBlaze
;; Copyright (C) 2009-2015 Free Software Foundation, Inc.
;;
;; Contributed by Michael Eager <eager@eagercon.com>.
;;
;; 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/>.
;; Return whether OP can be used as an operands in arithmetic.
(define_predicate "arith_operand"
(ior (match_code "const_int,const_double")
(match_operand 0 "register_operand")))
(define_predicate "arith_operand32"
(ior (match_operand 0 "register_operand")
(and (match_code "const_int,const_double")
(match_test "LARGE_INT (op)"))))
(define_predicate "arith_plus_operand"
(match_operand 0 "general_operand")
{
switch (GET_CODE (op))
{
default:
return 0;
case CONST_INT:
case REG:
return 1;
case SYMBOL_REF:
case LABEL_REF:
if (flag_pic || microblaze_tls_referenced_p(op))
return 0;
return 1;
case CONST:
{
rtx const0;
const0 = XEXP (op, 0);
switch (GET_CODE(const0))
{
default:
return 0;
case UNSPEC :
return 1;
case PLUS :
{
rtx p0, p1;
p0 = XEXP (const0, 0);
p1 = XEXP (const0, 1);
if ((GET_CODE(p0) == SYMBOL_REF
|| GET_CODE (p0) == LABEL_REF)
&& GET_CODE(p1) == CONST_INT)
{
return arith_plus_operand (p0, GET_MODE(p0));
}
}
}
}
}
return 0;
})
(define_predicate "const_0_operand"
(and (match_code "const_int,const_double")
(match_test "op == CONST0_RTX (GET_MODE (op))")))
;; Return whether OP is a register or the constant 0.
(define_predicate "reg_or_0_operand"
(ior (match_operand 0 "const_0_operand")
(match_operand 0 "register_operand")))
(define_predicate "reg_or_mem_operand"
(ior (match_operand 0 "memory_operand")
(match_operand 0 "register_operand")))
;; Return if the operand is either the PC or a label_ref.
(define_special_predicate "pc_or_label_operand"
(ior (match_code "pc,label_ref")
(and (match_code "symbol_ref")
(match_test "!(strcmp ((XSTR (op, 0)), \"_stack_overflow_exit\"))"))))
;; Test for valid call operand
(define_predicate "call_insn_operand"
(match_test "CALL_INSN_OP (op)"))
(define_predicate "call_insn_simple_operand"
(and (match_test "CALL_INSN_OP (op)")
(match_test "GET_CODE (op) == REG || GET_CODE (op) == SYMBOL_REF || GET_CODE (op) == CONST_INT")))
;; Return if OPERAND is valid as a source operand for a move instruction.
(define_predicate "move_src_operand"
(and (
not (
and (match_code "plus")
(not (match_test "(GET_CODE (XEXP (op, 0)) == REG) ^ (GET_CODE (XEXP (op,1)) == REG)"))
)
)
(match_operand 0 "general_operand"))
{
if (microblaze_tls_referenced_p(op)
|| (flag_pic && (symbol_mentioned_p(op) || label_mentioned_p(op))))
return false;
return true;
})
;; Test for valid PIC call operand
(define_predicate "call_insn_plt_operand"
(match_test "PLT_ADDR_P (op)"))
;; Return if the code of this rtx pattern is a comparison.
(define_predicate "cmp_op"
(match_code "gt,ge,gtu,geu,lt,le,ltu,leu"))
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