1//===-- M68kInstrAtomics.td - Atomics Instructions ---------*- tablegen -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9foreach size = [8, 16, 32] in {
10  def : Pat<(!cast<SDPatternOperator>("atomic_load_"#size) MxCP_ARI:$ptr),
11            (!cast<MxInst>("MOV"#size#"dj") !cast<MxMemOp>("MxARI"#size):$ptr)>;
12
13  def : Pat<(!cast<SDPatternOperator>("atomic_store_"#size) !cast<MxRegOp>("MxDRD"#size):$val, MxCP_ARI:$ptr),
14            (!cast<MxInst>("MOV"#size#"jd") !cast<MxMemOp>("MxARI"#size):$ptr,
15                                            !cast<MxRegOp>("MxDRD"#size):$val)>;
16}
17
18let Predicates = [AtLeastM68020] in {
19class MxCASOp<bits<2> size_encoding, MxType type>
20    : MxInst<(outs type.ROp:$out),
21             (ins type.ROp:$dc, type.ROp:$du, !cast<MxMemOp>("MxARI"#type.Size):$mem),
22             "cas."#type.Prefix#" $dc, $du, $mem"> {
23  let Inst = (ascend
24                (descend 0b00001, size_encoding, 0b011, MxEncAddrMode_j<"mem">.EA),
25                (descend 0b0000000, (operand "$du", 3), 0b000, (operand "$dc", 3))
26              );
27  let Constraints = "$out = $dc";
28  let mayLoad = 1;
29  let mayStore = 1;
30}
31
32def CAS8  : MxCASOp<0x1, MxType8d>;
33def CAS16 : MxCASOp<0x2, MxType16d>;
34def CAS32 : MxCASOp<0x3, MxType32d>;
35
36
37foreach size = [8, 16, 32] in {
38  def : Pat<(!cast<SDPatternOperator>("atomic_cmp_swap_"#size) MxCP_ARI:$ptr,
39                                                                !cast<MxRegOp>("MxDRD"#size):$cmp,
40                                                                !cast<MxRegOp>("MxDRD"#size):$new),
41            (!cast<MxInst>("CAS"#size) !cast<MxRegOp>("MxDRD"#size):$cmp,
42                                       !cast<MxRegOp>("MxDRD"#size):$new,
43                                       !cast<MxMemOp>("MxARI"#size):$ptr)>;
44}
45} // let Predicates = [AtLeastM68020]
46