1// WebAssemblyInstrInfo.td-Describe the WebAssembly Instructions-*- tablegen -*-
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9///
10/// \file
11/// \brief WebAssembly Instruction definitions.
12///
13//===----------------------------------------------------------------------===//
14
15//===----------------------------------------------------------------------===//
16// WebAssembly Instruction Predicate Definitions.
17//===----------------------------------------------------------------------===//
18
19def HasAddr32 : Predicate<"!Subtarget->hasAddr64()">;
20def HasAddr64 : Predicate<"Subtarget->hasAddr64()">;
21def HasSIMD128 : Predicate<"Subtarget->hasSIMD128()">,
22                           AssemblerPredicate<"FeatureSIMD128", "simd128">;
23
24//===----------------------------------------------------------------------===//
25// WebAssembly-specific DAG Node Types.
26//===----------------------------------------------------------------------===//
27
28def SDT_WebAssemblyCallSeqStart : SDCallSeqStart<[SDTCisVT<0, iPTR>]>;
29def SDT_WebAssemblyCallSeqEnd :
30    SDCallSeqEnd<[SDTCisVT<0, iPTR>, SDTCisVT<1, iPTR>]>;
31def SDT_WebAssemblyCall0    : SDTypeProfile<0, -1, [SDTCisPtrTy<0>]>;
32def SDT_WebAssemblyCall1    : SDTypeProfile<1, -1, [SDTCisPtrTy<1>]>;
33def SDT_WebAssemblyTableswitch : SDTypeProfile<0, -1, [SDTCisPtrTy<0>]>;
34def SDT_WebAssemblyArgument : SDTypeProfile<1, 1, [SDTCisVT<1, i32>]>;
35def SDT_WebAssemblyReturn   : SDTypeProfile<0, -1, []>;
36def SDT_WebAssemblyWrapper  : SDTypeProfile<1, 1, [SDTCisSameAs<0, 1>,
37                                                   SDTCisPtrTy<0>]>;
38
39//===----------------------------------------------------------------------===//
40// WebAssembly-specific DAG Nodes.
41//===----------------------------------------------------------------------===//
42
43def WebAssemblycallseq_start :
44    SDNode<"ISD::CALLSEQ_START", SDT_WebAssemblyCallSeqStart,
45           [SDNPHasChain, SDNPOutGlue]>;
46def WebAssemblycallseq_end :
47    SDNode<"ISD::CALLSEQ_END", SDT_WebAssemblyCallSeqEnd,
48           [SDNPHasChain, SDNPOptInGlue, SDNPOutGlue]>;
49def WebAssemblycall0 : SDNode<"WebAssemblyISD::CALL0",
50                              SDT_WebAssemblyCall0,
51                              [SDNPHasChain, SDNPVariadic]>;
52def WebAssemblycall1 : SDNode<"WebAssemblyISD::CALL1",
53                              SDT_WebAssemblyCall1,
54                              [SDNPHasChain, SDNPVariadic]>;
55def WebAssemblytableswitch : SDNode<"WebAssemblyISD::TABLESWITCH",
56                                    SDT_WebAssemblyTableswitch,
57                                    [SDNPHasChain, SDNPVariadic]>;
58def WebAssemblyargument : SDNode<"WebAssemblyISD::ARGUMENT",
59                                 SDT_WebAssemblyArgument>;
60def WebAssemblyreturn   : SDNode<"WebAssemblyISD::RETURN",
61                                 SDT_WebAssemblyReturn, [SDNPHasChain]>;
62def WebAssemblywrapper  : SDNode<"WebAssemblyISD::Wrapper",
63                                 SDT_WebAssemblyWrapper>;
64
65//===----------------------------------------------------------------------===//
66// WebAssembly-specific Operands.
67//===----------------------------------------------------------------------===//
68
69def bb_op : Operand<OtherVT>;
70def tjumptable_op : Operand<iPTR>;
71def global : Operand<iPTR>;
72
73//===----------------------------------------------------------------------===//
74// WebAssembly Instruction Format Definitions.
75//===----------------------------------------------------------------------===//
76
77include "WebAssemblyInstrFormats.td"
78
79//===----------------------------------------------------------------------===//
80// Additional instructions.
81//===----------------------------------------------------------------------===//
82
83multiclass ARGUMENT<WebAssemblyRegClass vt> {
84  def ARGUMENT_#vt : I<(outs vt:$res), (ins i32imm:$argno),
85                       [(set vt:$res, (WebAssemblyargument timm:$argno))]>;
86}
87defm : ARGUMENT<I32>;
88defm : ARGUMENT<I64>;
89defm : ARGUMENT<F32>;
90defm : ARGUMENT<F64>;
91
92// get_local and set_local are not generated by instruction selection; they
93// are implied by virtual register uses and defs in most contexts. However,
94// they are explicitly emitted for special purposes.
95multiclass LOCAL<WebAssemblyRegClass vt> {
96  def GET_LOCAL_#vt : I<(outs vt:$res), (ins i32imm:$regno), [],
97                        "get_local\t$res, $regno">;
98  // TODO: set_local returns its operand value
99  def SET_LOCAL_#vt : I<(outs), (ins i32imm:$regno, vt:$src), [],
100                        "set_local\t$regno, $src">;
101
102  // COPY_LOCAL is not an actual instruction in wasm, but since we allow
103  // get_local and set_local to be implicit, we can have a COPY_LOCAL which
104  // is actually a no-op because all the work is done in the implied
105  // get_local and set_local.
106  let isAsCheapAsAMove = 1 in
107  def COPY_LOCAL_#vt : I<(outs vt:$res), (ins vt:$src), [],
108                         "copy_local\t$res, $src">;
109}
110defm : LOCAL<I32>;
111defm : LOCAL<I64>;
112defm : LOCAL<F32>;
113defm : LOCAL<F64>;
114
115def CONST_I32 : I<(outs I32:$res), (ins i32imm:$imm),
116                  [(set I32:$res, imm:$imm)],
117                  "i32.const\t$res, $imm">;
118def CONST_I64 : I<(outs I64:$res), (ins i64imm:$imm),
119                  [(set I64:$res, imm:$imm)],
120                  "i64.const\t$res, $imm">;
121def CONST_F32 : I<(outs F32:$res), (ins f32imm:$imm),
122                  [(set F32:$res, fpimm:$imm)],
123                  "f32.const\t$res, $imm">;
124def CONST_F64 : I<(outs F64:$res), (ins f64imm:$imm),
125                  [(set F64:$res, fpimm:$imm)],
126                  "f64.const\t$res, $imm">;
127
128def : Pat<(i32 (WebAssemblywrapper tglobaladdr :$dst)),
129          (CONST_I32 tglobaladdr :$dst)>;
130
131def JUMP_TABLE : I<(outs I32:$dst), (ins tjumptable_op:$addr),
132                   [(set I32:$dst, (WebAssemblywrapper tjumptable:$addr))],
133                   "jump_table\t$dst, $addr">;
134
135// Function signature and local variable declaration "instructions".
136def PARAM  : I<(outs), (ins variable_ops), [], ".param  \t">;
137def RESULT : I<(outs), (ins variable_ops), [], ".result \t">;
138def LOCAL  : I<(outs), (ins variable_ops), [], ".local  \t">;
139
140//===----------------------------------------------------------------------===//
141// Additional sets of instructions.
142//===----------------------------------------------------------------------===//
143
144include "WebAssemblyInstrMemory.td"
145include "WebAssemblyInstrCall.td"
146include "WebAssemblyInstrControl.td"
147include "WebAssemblyInstrInteger.td"
148include "WebAssemblyInstrFloat.td"
149include "WebAssemblyInstrConv.td"
150include "WebAssemblyInstrAtomics.td"
151include "WebAssemblyInstrSIMD.td"
152