Imported Upstream version 5.18.0.161

Former-commit-id: 4db48158d3a35497b8f118ab21b5f08ac3d86d98

external/llvm/lib/Target/BPF/BPF.td

@@ -0,0 +1,50 @@
+//===-- BPF.td - Describe the BPF Target Machine -----------*- tablegen -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+include "llvm/Target/Target.td"
+
+include "BPFRegisterInfo.td"
+include "BPFCallingConv.td"
+include "BPFInstrInfo.td"
+
+def BPFInstrInfo : InstrInfo;
+
+class Proc<string Name, list<SubtargetFeature> Features>
+ : Processor<Name, NoItineraries, Features>;
+
+def : Proc<"generic", []>;
+def : Proc<"v1", []>;
+def : Proc<"v2", []>;
+def : Proc<"probe", []>;
+
+def DummyFeature : SubtargetFeature<"dummy", "isDummyMode",
+                                    "true", "unused feature">;
+
+def BPFInstPrinter : AsmWriter {
+  string AsmWriterClassName  = "InstPrinter";
+  bit isMCAsmWriter = 1;
+}
+
+def BPFAsmParser : AsmParser {
+  bit HasMnemonicFirst = 0;
+}
+
+def BPFAsmParserVariant : AsmParserVariant {
+  int Variant = 0;
+  string Name = "BPF";
+  string BreakCharacters = ".";
+  string TokenizingCharacters = "#()[]=:.<>!+*";
+}
+
+def BPF : Target {
+  let InstructionSet = BPFInstrInfo;
+  let AssemblyWriters = [BPFInstPrinter];
+  let AssemblyParsers = [BPFAsmParser];
+  let AssemblyParserVariants = [BPFAsmParserVariant];
+}