vendor/llvm/llvm-trunk-r301441

1 files changed, 32 insertions, 0 deletions

diff --git a/utils/TableGen/SubtargetFeatureInfo.cpp b/utils/TableGen/SubtargetFeatureInfo.cpp
index 72a556182b1d..96418dc77d55 100644
--- a/utils/TableGen/SubtargetFeatureInfo.cpp
+++ b/utils/TableGen/SubtargetFeatureInfo.cpp
@@ -59,6 +59,20 @@ void SubtargetFeatureInfo::emitSubtargetFeatureFlagEnumeration(
   OS << "};\n\n";
 }
 
+void SubtargetFeatureInfo::emitSubtargetFeatureBitEnumeration(
+    std::map<Record *, SubtargetFeatureInfo, LessRecordByID> &SubtargetFeatures,
+    raw_ostream &OS) {
+  OS << "// Bits for subtarget features that participate in "
+     << "instruction matching.\n";
+  OS << "enum SubtargetFeatureBits : "
+     << getMinimalTypeForRange(SubtargetFeatures.size()) << " {\n";
+  for (const auto &SF : SubtargetFeatures) {
+    const SubtargetFeatureInfo &SFI = SF.second;
+    OS << "  " << SFI.getEnumBitName() << " = " << SFI.Index << ",\n";
+  }
+  OS << "};\n\n";
+}
+
 void SubtargetFeatureInfo::emitNameTable(
     std::map<Record *, SubtargetFeatureInfo, LessRecordByID> &SubtargetFeatures,
     raw_ostream &OS) {
@@ -90,6 +104,24 @@ void SubtargetFeatureInfo::emitComputeAvailableFeatures(
     StringRef TargetName, StringRef ClassName, StringRef FuncName,
     std::map<Record *, SubtargetFeatureInfo, LessRecordByID> &SubtargetFeatures,
     raw_ostream &OS) {
+  OS << "PredicateBitset " << TargetName << ClassName << "::\n"
+     << FuncName << "(const MachineFunction *MF, const " << TargetName
+     << "Subtarget *Subtarget) const {\n";
+  OS << "  PredicateBitset Features;\n";
+  for (const auto &SF : SubtargetFeatures) {
+    const SubtargetFeatureInfo &SFI = SF.second;
+
+    OS << "  if (" << SFI.TheDef->getValueAsString("CondString") << ")\n";
+    OS << "    Features[" << SFI.getEnumBitName() << "] = 1;\n";
+  }
+  OS << "  return Features;\n";
+  OS << "}\n\n";
+}
+
+void SubtargetFeatureInfo::emitComputeAssemblerAvailableFeatures(
+    StringRef TargetName, StringRef ClassName, StringRef FuncName,
+    std::map<Record *, SubtargetFeatureInfo, LessRecordByID> &SubtargetFeatures,
+    raw_ostream &OS) {
   OS << "uint64_t " << TargetName << ClassName << "::\n"
      << FuncName << "(const FeatureBitset& FB) const {\n";
   OS << "  uint64_t Features = 0;\n";