vendor/llvm/llvm-trunk-r301441

1 files changed, 40 insertions, 0 deletions

diff --git a/utils/TableGen/SubtargetFeatureInfo.h b/utils/TableGen/SubtargetFeatureInfo.h
index 99f380f2a1d79..bbaf452596066 100644
--- a/utils/TableGen/SubtargetFeatureInfo.h
+++ b/utils/TableGen/SubtargetFeatureInfo.h
@@ -37,16 +37,34 @@ struct SubtargetFeatureInfo {
     return "Feature_" + TheDef->getName().str();
   }
 
+  /// \brief The name of the enumerated constant identifying the bitnumber for
+  /// this feature.
+  std::string getEnumBitName() const {
+    return "Feature_" + TheDef->getName().str() + "Bit";
+  }
+
   void dump() const;
   static std::vector<std::pair<Record *, SubtargetFeatureInfo>>
   getAll(const RecordKeeper &Records);
 
   /// Emit the subtarget feature flag definitions.
+  ///
+  /// This version emits the bit value for the feature and is therefore limited
+  /// to 64 feature bits.
   static void emitSubtargetFeatureFlagEnumeration(
       std::map<Record *, SubtargetFeatureInfo, LessRecordByID>
           &SubtargetFeatures,
       raw_ostream &OS);
 
+  /// Emit the subtarget feature flag definitions.
+  ///
+  /// This version emits the bit index for the feature and can therefore support
+  /// more than 64 feature bits.
+  static void emitSubtargetFeatureBitEnumeration(
+      std::map<Record *, SubtargetFeatureInfo, LessRecordByID>
+          &SubtargetFeatures,
+      raw_ostream &OS);
+
   static void emitNameTable(std::map<Record *, SubtargetFeatureInfo,
                                      LessRecordByID> &SubtargetFeatures,
                             raw_ostream &OS);
@@ -54,6 +72,9 @@ struct SubtargetFeatureInfo {
   /// Emit the function to compute the list of available features given a
   /// subtarget.
   ///
+  /// This version is used for subtarget features defined using Predicate<>
+  /// and supports more than 64 feature bits.
+  ///
   /// \param TargetName The name of the target as used in class prefixes (e.g.
   ///                   <TargetName>Subtarget)
   /// \param ClassName  The name of the class (without the <Target> prefix)
@@ -66,6 +87,25 @@ struct SubtargetFeatureInfo {
       std::map<Record *, SubtargetFeatureInfo, LessRecordByID>
           &SubtargetFeatures,
       raw_ostream &OS);
+
+  /// Emit the function to compute the list of available features given a
+  /// subtarget.
+  ///
+  /// This version is used for subtarget features defined using
+  /// AssemblerPredicate<> and supports up to 64 feature bits.
+  ///
+  /// \param TargetName The name of the target as used in class prefixes (e.g.
+  ///                   <TargetName>Subtarget)
+  /// \param ClassName  The name of the class (without the <Target> prefix)
+  ///                   that will contain the generated functions.
+  /// \param FuncName   The name of the function to emit.
+  /// \param SubtargetFeatures A map of TableGen records to the
+  ///                          SubtargetFeatureInfo equivalent.
+  static void emitComputeAssemblerAvailableFeatures(
+      StringRef TargetName, StringRef ClassName, StringRef FuncName,
+      std::map<Record *, SubtargetFeatureInfo, LessRecordByID>
+          &SubtargetFeatures,
+      raw_ostream &OS);
 };
 } // end namespace llvm