split enum emission out from InstrInfoEmitter into it's own tblgen backend.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45640 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/InstrEnumEmitter.cpp b/utils/TableGen/InstrEnumEmitter.cpp
new file mode 100644
index 0000000..df07119
--- /dev/null
+++ b/utils/TableGen/InstrEnumEmitter.cpp
@@ -0,0 +1,54 @@
+//===- InstrEnumEmitter.cpp - Generate Instruction Set Enums --------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This tablegen backend is responsible for emitting enums for each machine
+// instruction.
+//
+//===----------------------------------------------------------------------===//
+
+#include "InstrEnumEmitter.h"
+#include "CodeGenTarget.h"
+#include "Record.h"
+using namespace llvm;
+
+// runEnums - Print out enum values for all of the instructions.
+void InstrEnumEmitter::run(std::ostream &OS) {
+ EmitSourceFileHeader("Target Instruction Enum Values", OS);
+ OS << "namespace llvm {\n\n";
+
+ CodeGenTarget Target;
+
+ // We must emit the PHI opcode first...
+ std::string Namespace;
+ for (CodeGenTarget::inst_iterator II = Target.inst_begin(),
+ E = Target.inst_end(); II != E; ++II) {
+ if (II->second.Namespace != "TargetInstrInfo") {
+ Namespace = II->second.Namespace;
+ break;
+ }
+ }
+
+ if (Namespace.empty()) {
+ fprintf(stderr, "No instructions defined!\n");
+ exit(1);
+ }
+
+ std::vector<const CodeGenInstruction*> NumberedInstructions;
+ Target.getInstructionsByEnumValue(NumberedInstructions);
+
+ OS << "namespace " << Namespace << " {\n";
+ OS << " enum {\n";
+ for (unsigned i = 0, e = NumberedInstructions.size(); i != e; ++i) {
+ OS << " " << NumberedInstructions[i]->TheDef->getName()
+ << "\t= " << i << ",\n";
+ }
+ OS << " INSTRUCTION_LIST_END = " << NumberedInstructions.size() << "\n";
+ OS << " };\n}\n";
+ OS << "} // End llvm namespace \n";
+}