1 /* Machine description for Visium.
2 Copyright (C
) 2014-2018 Free Software Foundation
, Inc.
4 This file is part of GCC.
6 GCC is free software
; you can redistribute it and
/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation
; either version
3, or (at your option
)
11 GCC is distributed in the hope that it will be useful
,
12 but WITHOUT ANY WARRANTY
; without even the implied warranty of
13 MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GCC
; see the file COPYING3. If not see
18 <http
://www.gnu.org
/licenses
/>.
*/
20 /* Add any extra modes needed to represent the condition code.
22 We have a CCNZ mode which is used for implicit comparisons with zero when
23 arithmetic instructions set the condition code. Only the N and Z flags
24 are valid in this mode
, which means that only the
=,!= and
<,>= operators
25 can be used in conjunction with it.
27 We also have a CCCmode which is used by the arithmetic instructions when
28 they explicitly set the C
flag (unsigned overflow
) and by the bit
-test
29 instruction. Only the
=,!= and unsigned
<,>= operators can be used in
32 We also have a CCVmode which is used by the arithmetic instructions when
33 they explicitly set the V
flag (signed overflow
). Only the
=,!= operators
34 can be used in conjunction with it.
36 We also have two modes to indicate that the condition code is set by the
37 the floating
-point unit. One for comparisons which generate an exception
38 if the result is
unordered (CCFPEmode
) and one for comparisons which never
39 generate such an
exception (CCFPmode
).
*/