Use std::bitset for SubtargetFeatures

[oota-llvm.git] / lib / Target / AArch64 / Utils / AArch64BaseInfo.h

diff --git a/lib/Target/AArch64/Utils/AArch64BaseInfo.h b/lib/Target/AArch64/Utils/AArch64BaseInfo.h
index 6d0337ce15ed0084e913b8877fbfe337f75203f9..4e80a79d29399a8dfe894b644ad47b327f8380e9 100644 (file)
--- a/lib/Target/AArch64/Utils/AArch64BaseInfo.h
+++ b/lib/Target/AArch64/Utils/AArch64BaseInfo.h
@@ -26,6 +26,8 @@
 
 namespace llvm {
 
+class FeatureBitset;
+
 inline static unsigned getWRegFromXReg(unsigned Reg) {
   switch (Reg) {
   case AArch64::X0: return AArch64::W0;
@@ -1139,21 +1141,21 @@ namespace AArch64SysReg {
 
     const AArch64NamedImmMapper::Mapping *InstPairs;
     size_t NumInstPairs;
-    uint64_t FeatureBits;
+    const FeatureBitset &FeatureBits;
 
-    SysRegMapper(uint64_t FeatureBits) : FeatureBits(FeatureBits) { }
+    SysRegMapper(const FeatureBitset &FeatureBits) : FeatureBits(FeatureBits) { }
     uint32_t fromString(StringRef Name, bool &Valid) const;
     std::string toString(uint32_t Bits) const;
   };
 
   struct MSRMapper : SysRegMapper {
     static const AArch64NamedImmMapper::Mapping MSRPairs[];
-    MSRMapper(uint64_t FeatureBits);
+    MSRMapper(const FeatureBitset &FeatureBits);
   };
 
   struct MRSMapper : SysRegMapper {
     static const AArch64NamedImmMapper::Mapping MRSPairs[];
-    MRSMapper(uint64_t FeatureBits);
+    MRSMapper(const FeatureBitset &FeatureBits);
   };
 
   uint32_t ParseGenericRegister(StringRef Name, bool &Valid);