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/* Predicates for TI C6X
Copyright (C) 2010, 2011 Free Software Foundation, Inc.
Contributed by Andrew Jenner <andrew@codesourcery.com>
Contributed by Bernd Schmidt <bernds@codesourcery.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/>. */
(define_predicate "reg_or_const_int_operand"
(ior (match_operand 0 "register_operand")
(match_operand 0 "const_int_operand")))
(define_predicate "const_vector_operand"
(match_code "const_vector"))
(define_predicate "scst5_operand"
(and (match_operand 0 "const_int_operand")
(match_test "satisfies_constraint_Is5 (op)")))
(define_predicate "reg_or_ucst4_operand"
(ior (match_operand 0 "register_operand")
(and (match_operand 0 "const_int_operand")
(match_test "satisfies_constraint_Iu4 (op)"))))
(define_predicate "reg_or_scst5_operand"
(ior (match_operand 0 "register_operand")
(match_operand 0 "scst5_operand")))
(define_predicate "reg_or_ucst5_operand"
(ior (match_operand 0 "register_operand")
(and (match_operand 0 "const_int_operand")
(match_test "satisfies_constraint_Iu5 (op)"))))
(define_predicate "addsi_operand"
(ior (match_operand 0 "register_operand")
(and (match_operand 0 "const_int_operand")
(match_test "satisfies_constraint_IsB (op)"))))
(define_predicate "andsi_operand"
(ior (match_operand 0 "reg_or_scst5_operand")
(and (match_operand 0 "const_int_operand")
(match_test "satisfies_constraint_Jc (op)"))))
(define_predicate "iorsi_operand"
(ior (match_operand 0 "reg_or_scst5_operand")
(and (match_operand 0 "const_int_operand")
(match_test "satisfies_constraint_Js (op)"))))
(define_predicate "insv_operand"
(and (match_operand 0 "const_int_operand")
(match_test "INTVAL (op) == 0 || INTVAL (op) == -1")))
(define_predicate "c6x_jump_operand"
(match_code "label_ref,symbol_ref,reg"))
(define_predicate "c6x_call_operand"
(ior (match_code "symbol_ref,reg")
(and (match_code "subreg")
(match_test "GET_CODE (XEXP (op, 0)) == REG")))
{
/* The linker transforms jumps to undefined weak symbols in a way that
is incompatible with our code generation. */
return (GET_CODE (op) != SYMBOL_REF
|| (!SYMBOL_REF_WEAK (op)
&& !c6x_long_call_p (op)));
})
;; Returns 1 if OP is a symbolic operand, i.e. a symbol_ref or a label_ref,
;; possibly with an offset.
(define_predicate "symbolic_operand"
(ior (match_code "symbol_ref,label_ref")
(and (match_code "const")
(match_test "GET_CODE (XEXP (op,0)) == PLUS
&& (GET_CODE (XEXP (XEXP (op, 0), 0)) == SYMBOL_REF
|| GET_CODE (XEXP (XEXP (op, 0), 0)) == LABEL_REF)
&& GET_CODE (XEXP (XEXP (op, 0), 1)) == CONST_INT"))))
(define_predicate "const_int_or_symbolic_operand"
(ior (match_operand 0 "symbolic_operand")
(match_operand 0 "const_int_operand")))
;; Return nonzero iff OP is one of the integer constants 2, 4 or 8.
(define_predicate "adda_scale_operand"
(and (match_code "const_int")
(match_test "INTVAL (op) == 2 || INTVAL (op) == 4
|| ((TARGET_INSNS_64 || TARGET_INSNS_67)
&& INTVAL (op) == 8)")))
;; Return nonzero iff OP is one of the integer constants 2 or 4.
(define_predicate "suba_scale_operand"
(and (match_code "const_int")
(match_test "INTVAL (op) == 2 || INTVAL (op) == 4")))
;; True if this operator is valid for predication.
(define_predicate "predicate_operator"
(match_code "eq,ne"))
(define_predicate "c6x_comparison_operator"
(match_code "eq,ltu,gtu,lt,gt"))
(define_predicate "non_c6x_comparison_operator"
(match_code "ne,leu,geu,le,ge"))
;; FP Comparisons handled by c6x_expand_compare.
(define_predicate "c6x_fp_comparison_operator"
(ior (match_code "eq,lt,gt,le,ge")
(and (match_test "TARGET_FP")
(match_code "ltgt,uneq,unlt,ungt,unle,unge,ordered,unordered"))))
(define_predicate "c6x_any_comparison_operand"
(match_code "eq,lt,gt,le,ge,ltu,gtu")
{
rtx op0 = XEXP (op, 0);
rtx op1 = XEXP (op, 1);
if (ltugtu_operator (op, SImode)
&& register_operand (op0, SImode)
&& ((TARGET_INSNS_64 && reg_or_ucst5_operand (op1, SImode))
|| (!TARGET_INSNS_64 && reg_or_ucst4_operand (op1, SImode))))
return true;
if (eqltgt_operator (op, SImode)
&& register_operand (op0, SImode)
&& reg_or_scst5_operand (op1, SImode))
return true;
if (!TARGET_FP)
return false;
if (!eqltgt_operator (op, SFmode) && !eqltgt_operator (op, DFmode))
return false;
if (register_operand (op0, GET_MODE (op))
&& register_operand (op1, GET_MODE (op)))
return true;
return false;
})
(define_predicate "ltugtu_operator"
(match_code "ltu,gtu"))
(define_predicate "eqltgt_operator"
(match_code "eq,lt,gt"))
(define_predicate "eqne_operator"
(match_code "eq,ne"))
(define_predicate "predicate_register"
(and (match_code "reg")
(ior (match_test "REGNO_REG_CLASS (REGNO (op)) == PREDICATE_A_REGS")
(match_test "REGNO_REG_CLASS (REGNO (op)) == PREDICATE_B_REGS"))))
;; Allow const_ints for things like the real_mult patterns.
(define_predicate "a_register"
(ior (and (match_code "reg")
(match_test "A_REGNO_P (REGNO (op))"))
(and (match_code "const_int")
(match_test "A_REGNO_P (INTVAL (op))"))))
(define_predicate "b_register"
(ior (and (match_code "reg")
(match_test "B_REGNO_P (REGNO (op))"))
(and (match_code "const_int")
(match_test "B_REGNO_P (INTVAL (op))"))))
(define_predicate "pic_register_operand"
(and (match_code "reg")
(match_test "op == pic_offset_table_rtx")))
;; True if OP refers to a symbol in the sdata section.
(define_predicate "sdata_symbolic_operand"
(match_code "symbol_ref,const")
{
HOST_WIDE_INT offset = 0, size = 0;
tree t;
switch (GET_CODE (op))
{
case CONST:
op = XEXP (op, 0);
if (GET_CODE (op) != PLUS
|| GET_CODE (XEXP (op, 0)) != SYMBOL_REF
|| GET_CODE (XEXP (op, 1)) != CONST_INT)
return false;
offset = INTVAL (XEXP (op, 1));
op = XEXP (op, 0);
/* FALLTHRU */
case SYMBOL_REF:
/* For shared libraries, only allow symbols we know are local.
For executables, the linker knows to create copy relocs if
necessary so we can use DP-relative addressing for all small
objects. */
if ((c6x_initial_flag_pic && !SYMBOL_REF_LOCAL_P (op))
|| !SYMBOL_REF_SMALL_P (op))
return false;
/* Note that in addition to DECLs, we can get various forms
of constants here. */
t = SYMBOL_REF_DECL (op);
if (DECL_P (t))
t = DECL_SIZE_UNIT (t);
else
t = TYPE_SIZE_UNIT (TREE_TYPE (t));
if (t && host_integerp (t, 0))
{
size = tree_low_cst (t, 0);
if (size < 0)
size = 0;
}
/* Don't allow addressing outside the object. */
return (offset >= 0 && offset <= size);
default:
gcc_unreachable ();
}
})
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