llvm-tblgen: Rewrite emitters to use TableGen::Emitter

Each emitter became self-contained since it has the registration of option.

Differential Revision: https://reviews.llvm.org/D144351

Author: chapuni

llvm/utils/TableGen/AsmMatcherEmitter.cpp

@@ -100,15 +100,13 @@
 #include "CodeGenRegisters.h"
 #include "CodeGenTarget.h"
 #include "SubtargetFeatureInfo.h"
-#include "TableGenBackends.h"
 #include "Types.h"
 #include "llvm/ADT/CachedHashString.h"
 #include "llvm/ADT/PointerUnion.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringExtras.h"
-#include "llvm/Config/llvm-config.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/ErrorHandling.h"
@@ -4004,10 +4002,5 @@ void AsmMatcherEmitter::run(raw_ostream &OS) {
   OS << "#endif // GET_MNEMONIC_CHECKER\n\n";
 }
 
-namespace llvm {
-
-void EmitAsmMatcher(RecordKeeper &RK, raw_ostream &OS) {
-  AsmMatcherEmitter(RK).run(OS);
-}
-
-} // end namespace llvm
+static TableGen::Emitter::OptClass<AsmMatcherEmitter>
+    X("gen-asm-matcher", "Generate assembly instruction matcher");

llvm/utils/TableGen/AsmWriterEmitter.cpp

@@ -17,7 +17,6 @@
 #include "CodeGenRegisters.h"
 #include "CodeGenTarget.h"
 #include "SequenceToOffsetTable.h"
-#include "TableGenBackends.h"
 #include "Types.h"
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/DenseMap.h"
@@ -1310,10 +1309,5 @@ void AsmWriterEmitter::run(raw_ostream &O) {
   EmitPrintAliasInstruction(O);
 }
 
-namespace llvm {
-
-void EmitAsmWriter(RecordKeeper &RK, raw_ostream &OS) {
-  AsmWriterEmitter(RK).run(OS);
-}
-
-} // end namespace llvm
+static TableGen::Emitter::OptClass<AsmWriterEmitter>
+    X("gen-asm-writer", "Generate assembly writer");

llvm/utils/TableGen/Attributes.cpp

@@ -6,8 +6,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "TableGenBackends.h"
 #include "llvm/TableGen/Record.h"
+#include "llvm/TableGen/TableGenBackend.h"
 #include <vector>
 using namespace llvm;
 
@@ -130,10 +130,5 @@ void Attributes::run(raw_ostream &OS) {
   emitAttributeProperties(OS);
 }
 
-namespace llvm {
-
-void EmitAttributes(RecordKeeper &RK, raw_ostream &OS) {
-  Attributes(RK).run(OS);
-}
-
-} // namespace llvm
+static TableGen::Emitter::OptClass<Attributes> X("gen-attrs",
+                                                 "Generate attributes");

llvm/utils/TableGen/CTagsEmitter.cpp

@@ -12,11 +12,11 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "TableGenBackends.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/SourceMgr.h"
 #include "llvm/TableGen/Error.h"
 #include "llvm/TableGen/Record.h"
+#include "llvm/TableGen/TableGenBackend.h"
 #include <algorithm>
 #include <vector>
 using namespace llvm;
@@ -86,8 +86,5 @@ void CTagsEmitter::run(raw_ostream &OS) {
     T.emit(OS);
 }
 
-namespace llvm {
-
-void EmitCTags(RecordKeeper &RK, raw_ostream &OS) { CTagsEmitter(RK).run(OS); }
-
-} // namespace llvm
+static TableGen::Emitter::OptClass<CTagsEmitter>
+    X("gen-ctags", "Generate ctags-compatible index");

llvm/utils/TableGen/CallingConvEmitter.cpp

@@ -12,7 +12,6 @@
 //===----------------------------------------------------------------------===//
 
 #include "CodeGenTarget.h"
-#include "TableGenBackends.h"
 #include "llvm/TableGen/Error.h"
 #include "llvm/TableGen/Record.h"
 #include "llvm/TableGen/TableGenBackend.h"
@@ -429,10 +428,5 @@ void CallingConvEmitter::EmitArgRegisterLists(raw_ostream &O) {
   }
 }
 
-namespace llvm {
-
-void EmitCallingConv(RecordKeeper &RK, raw_ostream &OS) {
-  CallingConvEmitter(RK).run(OS);
-}
-
-} // namespace llvm
+static TableGen::Emitter::OptClass<CallingConvEmitter>
+    X("gen-callingconv", "Generate calling convention descriptions");

llvm/utils/TableGen/CodeEmitterGen.cpp

@@ -16,7 +16,6 @@
 #include "CodeGenInstruction.h"
 #include "CodeGenTarget.h"
 #include "InfoByHwMode.h"
-#include "TableGenBackends.h"
 #include "VarLenCodeEmitterGen.h"
 #include "llvm/ADT/APInt.h"
 #include "llvm/ADT/ArrayRef.h"
@@ -504,10 +503,5 @@ void CodeEmitterGen::run(raw_ostream &o) {
 
 } // end anonymous namespace
 
-namespace llvm {
-
-void EmitCodeEmitter(RecordKeeper &RK, raw_ostream &OS) {
-  CodeEmitterGen(RK).run(OS);
-}
-
-} // end namespace llvm
+static TableGen::Emitter::OptClass<CodeEmitterGen>
+    X("gen-emitter", "Generate machine code emitter");

llvm/utils/TableGen/CompressInstEmitter.cpp

@@ -67,7 +67,6 @@
 #include "CodeGenInstruction.h"
 #include "CodeGenRegisters.h"
 #include "CodeGenTarget.h"
-#include "TableGenBackends.h"
 #include "llvm/ADT/IndexedMap.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringMap.h"
@@ -904,10 +903,5 @@ void CompressInstEmitter::run(raw_ostream &o) {
   emitCompressInstEmitter(o, EmitterType::CheckCompress);
 }
 
-namespace llvm {
-
-void EmitCompressInst(RecordKeeper &RK, raw_ostream &OS) {
-  CompressInstEmitter(RK).run(OS);
-}
-
-} // namespace llvm
+static TableGen::Emitter::OptClass<CompressInstEmitter>
+    X("gen-compress-inst-emitter", "Generate RISCV compressed instructions.");

llvm/utils/TableGen/DAGISelEmitter.cpp

@@ -14,7 +14,6 @@
 #include "CodeGenInstruction.h"
 #include "CodeGenTarget.h"
 #include "DAGISelMatcher.h"
-#include "TableGenBackends.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/TableGen/Record.h"
 #include "llvm/TableGen/TableGenBackend.h"
@@ -188,10 +187,5 @@ void DAGISelEmitter::run(raw_ostream &OS) {
   EmitMatcherTable(TheMatcher.get(), CGP, OS);
 }
 
-namespace llvm {
-
-void EmitDAGISel(RecordKeeper &RK, raw_ostream &OS) {
-  DAGISelEmitter(RK).run(OS);
-}
-
-} // namespace llvm
+static TableGen::Emitter::OptClass<DAGISelEmitter>
+    X("gen-dag-isel", "Generate a DAG instruction selector");

llvm/utils/TableGen/DFAEmitter.cpp

@@ -22,13 +22,13 @@
 
 #include "DFAEmitter.h"
 #include "SequenceToOffsetTable.h"
-#include "TableGenBackends.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/UniqueVector.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/TableGen/Record.h"
+#include "llvm/TableGen/TableGenBackend.h"
 #include <cassert>
 #include <cstdint>
 #include <deque>
@@ -370,10 +370,5 @@ void CustomDfaEmitter::printActionValue(action_type A, raw_ostream &OS) {
     OS << ")";
 }
 
-namespace llvm {
-
-void EmitAutomata(RecordKeeper &RK, raw_ostream &OS) {
-  AutomatonEmitter(RK).run(OS);
-}
-
-} // namespace llvm
+static TableGen::Emitter::OptClass<AutomatonEmitter>
+    X("gen-automata", "Generate generic automata");

llvm/utils/TableGen/DFAPacketizerEmitter.cpp

@@ -17,7 +17,6 @@
 #include "CodeGenSchedule.h"
 #include "CodeGenTarget.h"
 #include "DFAEmitter.h"
-#include "TableGenBackends.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/raw_ostream.h"
@@ -354,10 +353,5 @@ void DFAPacketizerEmitter::emitForItineraries(
      << "\n}\n\n";
 }
 
-namespace llvm {
-
-void EmitDFAPacketizer(RecordKeeper &RK, raw_ostream &OS) {
-  DFAPacketizerEmitter(RK).run(OS);
-}
-
-} // end namespace llvm
+static TableGen::Emitter::OptClass<DFAPacketizerEmitter>
+    X("gen-dfa-packetizer", "Generate DFA Packetizer for VLIW targets");