1 ;; Machine Descriptions for R8C/M16C/M32C
3 ;; Free Software Foundation, Inc.
4 ;; Contributed by Red Hat.
6 ;; This file is part of GCC.
8 ;; GCC is free software; you can redistribute it and/or modify it
9 ;; under the terms of the GNU General Public License as published
10 ;; by the Free Software Foundation; either version 2, or (at your
11 ;; option) any later version.
13 ;; GCC is distributed in the hope that it will be useful, but WITHOUT
14 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 ;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
16 ;; License for more details.
18 ;; You should have received a copy of the GNU General Public License
19 ;; along with GCC; see the file COPYING. If not, write to the Free
20 ;; Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
23 ; conditionals - cmp, jcc, setcc, etc.
25 ; Until support for relaxing is supported in gas, we must assume that
26 ; short labels won't reach, so we must use long labels.
27 ; Unfortunately, there aren't any conditional jumps with long labels,
28 ; so instead we invert the conditional and jump around a regular jump.
30 ; Note that we can, at some point in the future, add code to omit the
31 ; "cmp" portion of the insn if the preceding insn happened to set the
32 ; right flags already. For example, a mov followed by a "cmp *,0" is
33 ; redundant; the move already set the Z flag.
35 (define_insn "cbranchqi4"
36 [(set (pc) (if_then_else
37 (match_operator 0 "m32c_cmp_operator"
38 [(match_operand:QI 1 "mrai_operand" "RqiSd,RqiSd,?Rmm,?Rmm")
39 (match_operand:QI 2 "mrai_operand" "iRqiSd,?Rmm,iRqiSd,?Rmm")])
40 (label_ref (match_operand 3 "" ""))
43 "cmp.b\t%2,%1\n\tj%C0\t1f\n\tjmp.a\t%l3\n1:"
44 ; "cmp.b\t%2,%1\n\tj%c0\t%l3"
45 [(set_attr "flags" "oszc,oszc,oszc,oszc")]
48 (define_insn "cbranchhi4"
49 [(set (pc) (if_then_else
50 (match_operator 0 "m32c_cmp_operator"
51 [(match_operand:HI 1 "mrai_operand" "Rhi,?Sd,Rhi,?Sd,?Rmm,?Rmm")
52 (match_operand:HI 2 "mrai_operand" "iRhiSd,iRhiSd,?Rmm,?Rmm,iRhiSd,?Rmm")])
53 (label_ref (match_operand 3 "" ""))
56 "cmp.w\t%2,%1\n\tj%C0\t1f\n\tjmp.a\t%l3\n1:"
57 ; "cmp.w\t%2,%1\n\tj%c0\t%l3"
58 [(set_attr "flags" "oszc,oszc,oszc,oszc,oszc,oszc")]
61 (define_insn "cbranchpsi4"
62 [(set (pc) (if_then_else
63 (match_operator 0 "m32c_cmp_operator"
64 [(match_operand:PSI 1 "mrai_operand" "RsiSd,RsiSd,?Rmm,?Rmm")
65 (match_operand:PSI 2 "mrai_operand" "iRsiSd,?Rmm,iRsiSd,?Rmm")])
66 (label_ref (match_operand 3 "" ""))
69 "cmp.l\t%2,%1\n\tj%C0\t1f\n\tjmp.a\t%l3\n1:"
70 ; "cmp.l\t%2,%1\n\tj%c0\t%l3"
71 [(set_attr "flags" "oszc,oszc,oszc,oszc")]