Imported Upstream version 5.18.0.205

Former-commit-id: 7f59f7e792705db773f1caecdaa823092f4e2927

external/llvm/lib/Target/Nios2/Nios2.td

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+//===-- Nios2.td - Describe the Nios2 Target Machine -------*- tablegen -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+//===----------------------------------------------------------------------===//
+// Calling Conv, Instruction Descriptions
+//===----------------------------------------------------------------------===//
+
+include "llvm/Target/Target.td"
+include "Nios2RegisterInfo.td"
+include "Nios2Schedule.td"
+include "Nios2InstrInfo.td"
+include "Nios2CallingConv.td"
+
+//===----------------------------------------------------------------------===//
+// Nios2 Subtarget features
+//===----------------------------------------------------------------------===//
+def FeatureNios2r1     : SubtargetFeature<"nios2r1", "Nios2ArchVersion", 
+                                "Nios2r1", "Nios2 R1 ISA Support">;
+def FeatureNios2r2     : SubtargetFeature<"nios2r2", "Nios2ArchVersion",                      
+                               "Nios2r2", "Nios2 R2 ISA Support">;
+
+//===----------------------------------------------------------------------===//
+// Nios2 processors supported.
+//===----------------------------------------------------------------------===//
+
+class Proc<string Name, list<SubtargetFeature> Features>
+ : Processor<Name, Nios2GenericItineraries, Features>;
+
+def : Proc<"nios2r1", [FeatureNios2r1]>;
+def : Proc<"nios2r2", [FeatureNios2r2]>;
+
+def Nios2InstrInfo : InstrInfo;
+
+def Nios2AsmParser : AsmParser {
+  let ShouldEmitMatchRegisterName = 0;
+}
+
+//===----------------------------------------------------------------------===//
+// Declare the target which we are implementing
+//===----------------------------------------------------------------------===//
+
+def Nios2AsmWriter : AsmWriter {
+  string AsmWriterClassName  = "InstPrinter";
+  int PassSubtarget = 1;
+  int Variant = 0;
+}
+
+def Nios2 : Target {
+// def Nios2InstrInfo : InstrInfo as before.
+  let InstructionSet = Nios2InstrInfo;
+  let AssemblyParsers = [Nios2AsmParser];
+  let AssemblyWriters = [Nios2AsmWriter];
+}