1 include "llvm/TableGen/Automaton.td"
2 include "llvm/TableGen/SearchableTable.td"
4 // Define a set of input token symbols.
11 // Emit those as a C++ enum using SearchableTables.
12 def SymKind : GenericEnum {
13 let FilterClass = "SymKindTy";
16 // Define a transition implementation.
17 class SimpleTransition<bits<2> State, SymKindTy A> : Transition {
18 let NewState{1...0} = State;
19 SymKindTy ActionSym = A;
22 // Token SK_a sets bit 0b01.
23 def : SimpleTransition<0b01, SK_a>;
24 // Token SK_b sets bits 0b10.
25 def : SimpleTransition<0b10, SK_b>;
26 // Token SK_c sets both bits 0b11.
27 def : SimpleTransition<0b11, SK_c>;
29 def SimpleAutomaton : GenericAutomaton {
30 let TransitionClass = "SimpleTransition";
31 let SymbolFields = ["ActionSym"];
32 // Override the type of ActionSym from SymKindTy to the C++ type SymKind.
33 string TypeOf_ActionSym = "SymKind";
36 //===----------------------------------------------------------------------===//
37 // TupleActionAutomaton test implementation
39 // Define a transition implementation.
40 class TupleTransition<bits<2> State, SymKindTy s1, SymKindTy s2, string s3> : Transition {
41 let NewState{1...0} = State;
47 def : TupleTransition<0b01, SK_a, SK_b, "yeet">;
48 def : TupleTransition<0b10, SK_b, SK_b, "foo">;
49 def : TupleTransition<0b10, SK_c, SK_a, "foo">;
51 def TupleAutomaton : GenericAutomaton {
52 let TransitionClass = "TupleTransition";
53 let SymbolFields = ["S1", "S2", "S3"];
54 string TypeOf_S1 = "SymKind";
55 string TypeOf_S2 = "SymKind";
58 //===----------------------------------------------------------------------===//
59 // NfaAutomaton test implementation
61 class NfaTransition<bits<2> State, SymKindTy S> : Transition {
62 let NewState{1...0} = State;
66 // Symbols a and b can transition to 0b01 or 0b11 (sets bit 0).
67 def : NfaTransition<0b01, SK_a>;
68 def : NfaTransition<0b01, SK_b>;
69 // Symbols a and b can also transition to 0b10 or 0b11 (sets bit 1).
70 def : NfaTransition<0b10, SK_a>;
71 def : NfaTransition<0b10, SK_b>;
73 def NfaAutomaton : GenericAutomaton {
74 let TransitionClass = "NfaTransition";
75 let SymbolFields = ["A"];
76 string TypeOf_A = "SymKind";
79 //===----------------------------------------------------------------------===//
80 // BinPacker test implementation
81 //===----------------------------------------------------------------------===//
82 // This test generates an automaton that can pack values into bins subject to
83 // constraints. There are 6 possible bins, and the input tokens are constraint
84 // types. Some input types span two bins.
86 // The symbol type for a bin constraint. We use lists of ints as a tblgen hack
87 // to conditionally generate defs within multiclasses based on record
88 // information. A bin is nonempty (has a dummy one-element value) if enabled.
89 class BinRequirementKind {
98 def BRK_0_to_4 : BinRequirementKind { let Bin0 = [1]; let Bin1 = [1]; let Bin2 = [1]; let Bin3 = [1]; }
99 // Can use bins {0-3} but only evens (0 and 2).
100 def BRK_0_to_4_lo : BinRequirementKind { let Bin0 = [1]; let Bin2 = [1]; }
101 // Can use bins {0-3} but only odds (1 and 3).
102 def BRK_0_to_4_hi : BinRequirementKind { let Bin1 = [1]; let Bin3 = [1]; }
103 // Can use bins {0-3} but only even-odd pairs (0+1 or 1+2).
104 def BRK_0_to_4_dbl : BinRequirementKind { let Bin0 = [1]; let Bin2 = [1]; }
105 def BRK_0_to_6 : BinRequirementKind { let Bin0 = [1]; let Bin1 = [1]; let Bin2 = [1];
106 let Bin3 = [1]; let Bin4 = [1]; let Bin5 = [1]; }
107 def BRK_0_to_6_lo : BinRequirementKind { let Bin0 = [1]; let Bin2 = [1]; let Bin4 = [1]; }
108 def BRK_0_to_6_hi : BinRequirementKind { let Bin1 = [1]; let Bin3 = [1]; let Bin5 = [1]; }
109 def BRK_0_to_6_dbl : BinRequirementKind { let Bin0 = [1]; let Bin2 = [1]; let Bin4 = [1]; }
110 def BRK_2_to_6 : BinRequirementKind { let Bin2 = [1];
111 let Bin3 = [1]; let Bin4 = [1]; let Bin5 = [1]; }
112 def BRK_2_to_6_lo : BinRequirementKind { let Bin2 = [1]; let Bin4 = [1]; }
113 def BRK_2_to_6_hi : BinRequirementKind { let Bin3 = [1]; let Bin5 = [1];}
114 def BRK_2_to_6_dbl : BinRequirementKind { let Bin2 = [1]; let Bin4 = [1]; }
115 def BRK_2_to_4 : BinRequirementKind { let Bin2 = [1]; let Bin3 = [1]; }
116 def BRK_2_to_4_lo : BinRequirementKind { let Bin2 = [1]; }
117 def BRK_2_to_4_hi : BinRequirementKind { let Bin3 = [1]; }
118 def BRK_2_to_4_dbl : BinRequirementKind { let Bin2 = [1]; }
120 def BinRequirementKindEnum : GenericEnum {
121 let FilterClass = "BinRequirementKind";
124 // The transition class is trivial; it just contains the constraint symbol.
125 class BinTransition : Transition {
126 BinRequirementKind Sym;
129 // Mixin that occupies a single bin.
130 class Bin0 : BinTransition { let NewState{0} = 1; }
131 class Bin1 : BinTransition { let NewState{1} = 1; }
132 class Bin2 : BinTransition { let NewState{2} = 1;}
133 class Bin3 : BinTransition { let NewState{3} = 1; }
134 class Bin4 : BinTransition { let NewState{4} = 1;}
135 class Bin5 : BinTransition { let NewState{5} = 1; }
136 // Mixin that occupies a pair of bins (even-odd pairs).
137 class Bin01 : BinTransition { let NewState{0,1} = 0b11; }
138 class Bin23 : BinTransition { let NewState{2,3} = 0b11; }
139 class Bin45 : BinTransition { let NewState{4,5} = 0b11; }
141 // Instantiate all possible bin assignments for E.
142 multiclass BinAssignments<BinRequirementKind E> {
144 // Note the tablegen hack to conditionally instantiate a def based on E.
145 foreach x = E.Bin0 in { def : Bin0; }
146 foreach x = E.Bin1 in { def : Bin1; }
147 foreach x = E.Bin2 in { def : Bin2; }
148 foreach x = E.Bin3 in { def : Bin3; }
149 foreach x = E.Bin4 in { def : Bin4; }
150 foreach x = E.Bin5 in { def : Bin5; }
154 // Instantiate all possible bin assignments for E, which spans even-odd pairs.
155 multiclass DblBinAssignments<BinRequirementKind E> {
157 foreach x = E.Bin0 in { def : Bin01; }
158 foreach x = E.Bin2 in { def : Bin23; }
159 foreach x = E.Bin4 in { def : Bin45; }
163 defm : BinAssignments<BRK_0_to_4>;
164 defm : DblBinAssignments<BRK_0_to_4_dbl>;
165 defm : BinAssignments<BRK_0_to_4_lo>;
166 defm : BinAssignments<BRK_0_to_4_hi>;
167 defm : BinAssignments<BRK_0_to_6>;
168 defm : DblBinAssignments<BRK_0_to_6_dbl>;
169 defm : BinAssignments<BRK_0_to_6_lo>;
170 defm : BinAssignments<BRK_0_to_6_hi>;
171 defm : BinAssignments<BRK_2_to_6>;
172 defm : DblBinAssignments<BRK_2_to_6_dbl>;
173 defm : BinAssignments<BRK_2_to_6_lo>;
174 defm : BinAssignments<BRK_2_to_6_hi>;
175 defm : BinAssignments<BRK_2_to_4>;
176 defm : DblBinAssignments<BRK_2_to_4_dbl>;
177 defm : BinAssignments<BRK_2_to_4_lo>;
178 defm : BinAssignments<BRK_2_to_4_hi>;
180 def BinPackerAutomaton : GenericAutomaton {
181 let TransitionClass = "BinTransition";
182 let SymbolFields = ["Sym"];
183 string TypeOf_Sym = "BinRequirementKindEnum";