1 files changed, 0 insertions, 133 deletions

diff --git a/llvm/utils/TableGen/CodeEmitterGen.cpp b/llvm/utils/TableGen/CodeEmitterGen.cpp
index 2b9931b23c11..1d00c3cfd069 100644
--- a/llvm/utils/TableGen/CodeEmitterGen.cpp
+++ b/llvm/utils/TableGen/CodeEmitterGen.cpp
@@ -332,14 +332,6 @@ std::string CodeEmitterGen::getInstructionCaseForEncoding(Record *R, Record *Enc
   return Case;
 }
 
-static std::string
-getNameForFeatureBitset(const std::vector<Record *> &FeatureBitset) {
-  std::string Name = "CEFBS";
-  for (const auto &Feature : FeatureBitset)
-    Name += ("_" + Feature->getName()).str();
-  return Name;
-}
-
 static void emitInstBits(raw_ostream &OS, const APInt &Bits) {
   for (unsigned I = 0; I < Bits.getNumWords(); ++I)
     OS << ((I > 0) ? ", " : "") << "UINT64_C(" << utostr(Bits.getRawData()[I])
@@ -530,131 +522,6 @@ void CodeEmitterGen::run(raw_ostream &o) {
       o << "  return Value;\n";
     o << "}\n\n";
   }
-
-  const auto &All = SubtargetFeatureInfo::getAll(Records);
-  std::map<Record *, SubtargetFeatureInfo, LessRecordByID> SubtargetFeatures;
-  SubtargetFeatures.insert(All.begin(), All.end());
-
-  o << "#ifdef ENABLE_INSTR_PREDICATE_VERIFIER\n"
-    << "#undef ENABLE_INSTR_PREDICATE_VERIFIER\n"
-    << "#include <sstream>\n\n";
-
-  // Emit the subtarget feature enumeration.
-  SubtargetFeatureInfo::emitSubtargetFeatureBitEnumeration(SubtargetFeatures,
-                                                           o);
-
-  // Emit the name table for error messages.
-  o << "#ifndef NDEBUG\n";
-  SubtargetFeatureInfo::emitNameTable(SubtargetFeatures, o);
-  o << "#endif // NDEBUG\n";
-
-  // Emit the available features compute function.
-  SubtargetFeatureInfo::emitComputeAssemblerAvailableFeatures(
-      Target.getName(), "MCCodeEmitter", "computeAvailableFeatures",
-      SubtargetFeatures, o);
-
-  std::vector<std::vector<Record *>> FeatureBitsets;
-  for (const CodeGenInstruction *Inst : Target.getInstructionsByEnumValue()) {
-    FeatureBitsets.emplace_back();
-    for (Record *Predicate : Inst->TheDef->getValueAsListOfDefs("Predicates")) {
-      const auto &I = SubtargetFeatures.find(Predicate);
-      if (I != SubtargetFeatures.end())
-        FeatureBitsets.back().push_back(I->second.TheDef);
-    }
-  }
-
-  llvm::sort(FeatureBitsets, [&](const std::vector<Record *> &A,
-                                 const std::vector<Record *> &B) {
-    if (A.size() < B.size())
-      return true;
-    if (A.size() > B.size())
-      return false;
-    for (auto Pair : zip(A, B)) {
-      if (std::get<0>(Pair)->getName() < std::get<1>(Pair)->getName())
-        return true;
-      if (std::get<0>(Pair)->getName() > std::get<1>(Pair)->getName())
-        return false;
-    }
-    return false;
-  });
-  FeatureBitsets.erase(
-      std::unique(FeatureBitsets.begin(), FeatureBitsets.end()),
-      FeatureBitsets.end());
-  o << "#ifndef NDEBUG\n"
-    << "// Feature bitsets.\n"
-    << "enum : " << getMinimalTypeForRange(FeatureBitsets.size()) << " {\n"
-    << "  CEFBS_None,\n";
-  for (const auto &FeatureBitset : FeatureBitsets) {
-    if (FeatureBitset.empty())
-      continue;
-    o << "  " << getNameForFeatureBitset(FeatureBitset) << ",\n";
-  }
-  o << "};\n\n"
-    << "static constexpr FeatureBitset FeatureBitsets[] = {\n"
-    << "  {}, // CEFBS_None\n";
-  for (const auto &FeatureBitset : FeatureBitsets) {
-    if (FeatureBitset.empty())
-      continue;
-    o << "  {";
-    for (const auto &Feature : FeatureBitset) {
-      const auto &I = SubtargetFeatures.find(Feature);
-      assert(I != SubtargetFeatures.end() && "Didn't import predicate?");
-      o << I->second.getEnumBitName() << ", ";
-    }
-    o << "},\n";
-  }
-  o << "};\n"
-    << "#endif // NDEBUG\n\n";
-
-
-  // Emit the predicate verifier.
-  o << "void " << Target.getName()
-    << "MCCodeEmitter::verifyInstructionPredicates(\n"
-    << "    const MCInst &Inst, const FeatureBitset &AvailableFeatures) const {\n"
-    << "#ifndef NDEBUG\n"
-    << "  static " << getMinimalTypeForRange(FeatureBitsets.size())
-    << " RequiredFeaturesRefs[] = {\n";
-  unsigned InstIdx = 0;
-  for (const CodeGenInstruction *Inst : Target.getInstructionsByEnumValue()) {
-    o << "    CEFBS";
-    unsigned NumPredicates = 0;
-    for (Record *Predicate : Inst->TheDef->getValueAsListOfDefs("Predicates")) {
-      const auto &I = SubtargetFeatures.find(Predicate);
-      if (I != SubtargetFeatures.end()) {
-        o << '_' << I->second.TheDef->getName();
-        NumPredicates++;
-      }
-    }
-    if (!NumPredicates)
-      o << "_None";
-    o << ", // " << Inst->TheDef->getName() << " = " << InstIdx << "\n";
-    InstIdx++;
-  }
-  o << "  };\n\n";
-  o << "  assert(Inst.getOpcode() < " << InstIdx << ");\n";
-  o << "  const FeatureBitset &RequiredFeatures = "
-       "FeatureBitsets[RequiredFeaturesRefs[Inst.getOpcode()]];\n";
-  o << "  FeatureBitset MissingFeatures =\n"
-    << "      (AvailableFeatures & RequiredFeatures) ^\n"
-    << "      RequiredFeatures;\n"
-    << "  if (MissingFeatures.any()) {\n"
-    << "    std::ostringstream Msg;\n"
-    << "    Msg << \"Attempting to emit \" << "
-       "MCII.getName(Inst.getOpcode()).str()\n"
-    << "        << \" instruction but the \";\n"
-    << "    for (unsigned i = 0, e = MissingFeatures.size(); i != e; ++i)\n"
-    << "      if (MissingFeatures.test(i))\n"
-    << "        Msg << SubtargetFeatureNames[i] << \" \";\n"
-    << "    Msg << \"predicate(s) are not met\";\n"
-    << "    report_fatal_error(Msg.str().c_str());\n"
-    << "  }\n"
-    << "#else\n"
-    << "  // Silence unused variable warning on targets that don't use MCII for "
-       "other purposes (e.g. BPF).\n"
-    << "  (void)MCII;\n"
-    << "#endif // NDEBUG\n";
-  o << "}\n";
-  o << "#endif\n";
 }
 
 } // end anonymous namespace