Index: lib/Target/AArch64/Utils/AArch64BaseInfo.h
===================================================================
--- lib/Target/AArch64/Utils/AArch64BaseInfo.h
+++ lib/Target/AArch64/Utils/AArch64BaseInfo.h
@@ -285,8 +285,8 @@
   };
 
   template<int N>
-  AArch64NamedImmMapper(const Mapping (&Pairs)[N], uint32_t TooBigImm)
-    : Pairs(&Pairs[0]), NumPairs(N), TooBigImm(TooBigImm) {}
+  AArch64NamedImmMapper(const Mapping (&Mappings)[N], uint32_t TooBigImm)
+    : Mappings(&Mappings[0]), NumMappings(N), TooBigImm(TooBigImm) {}
 
   StringRef toString(uint32_t Value, bool &Valid) const;
   uint32_t fromString(StringRef Name, bool &Valid) const;
@@ -296,8 +296,8 @@
   /// N being 0 indicates no immediate syntax-form is allowed.
   bool validImm(uint32_t Value) const;
 protected:
-  const Mapping *Pairs;
-  size_t NumPairs;
+  const Mapping *Mappings;
+  size_t NumMappings;
   uint32_t TooBigImm;
 };
 
@@ -319,7 +319,7 @@
   };
 
   struct ATMapper : AArch64NamedImmMapper {
-    const static Mapping ATPairs[];
+    const static Mapping ATMappings[];
 
     ATMapper();
   };
@@ -343,7 +343,7 @@
   };
 
   struct DBarrierMapper : AArch64NamedImmMapper {
-    const static Mapping DBarrierPairs[];
+    const static Mapping DBarrierMappings[];
 
     DBarrierMapper();
   };
@@ -363,7 +363,7 @@
   };
 
   struct DCMapper : AArch64NamedImmMapper {
-    const static Mapping DCPairs[];
+    const static Mapping DCMappings[];
 
     DCMapper();
   };
@@ -380,7 +380,7 @@
 
 
   struct ICMapper : AArch64NamedImmMapper {
-    const static Mapping ICPairs[];
+    const static Mapping ICMappings[];
 
     ICMapper();
   };
@@ -396,7 +396,7 @@
     SY = 0xf
   };
   struct ISBMapper : AArch64NamedImmMapper {
-    const static Mapping ISBPairs[];
+    const static Mapping ISBMappings[];
 
     ISBMapper();
   };
@@ -426,7 +426,7 @@
   };
 
   struct PRFMMapper : AArch64NamedImmMapper {
-    const static Mapping PRFMPairs[];
+    const static Mapping PRFMMappings[];
 
     PRFMMapper();
   };
@@ -441,7 +441,7 @@
   };
 
   struct PStateMapper : AArch64NamedImmMapper {
-    const static Mapping PStatePairs[];
+    const static Mapping PStateMappings[];
 
     PStateMapper();
   };
@@ -1136,11 +1136,11 @@
   // burdening the common AArch64NamedImmMapper with abstractions only needed in
   // this one case.
   struct SysRegMapper {
-    static const AArch64NamedImmMapper::Mapping SysRegPairs[];
-    static const AArch64NamedImmMapper::Mapping CycloneSysRegPairs[];
+    static const AArch64NamedImmMapper::Mapping SysRegMappings[];
+    static const AArch64NamedImmMapper::Mapping CycloneSysRegMappings[];
 
-    const AArch64NamedImmMapper::Mapping *InstPairs;
-    size_t NumInstPairs;
+    const AArch64NamedImmMapper::Mapping *InstMappings;
+    size_t NumInstMappings;
     const FeatureBitset &FeatureBits;
 
     SysRegMapper(const FeatureBitset &FeatureBits) : FeatureBits(FeatureBits) { }
@@ -1149,12 +1149,12 @@
   };
 
   struct MSRMapper : SysRegMapper {
-    static const AArch64NamedImmMapper::Mapping MSRPairs[];
+    static const AArch64NamedImmMapper::Mapping MSRMappings[];
     MSRMapper(const FeatureBitset &FeatureBits);
   };
 
   struct MRSMapper : SysRegMapper {
-    static const AArch64NamedImmMapper::Mapping MRSPairs[];
+    static const AArch64NamedImmMapper::Mapping MRSMappings[];
     MRSMapper(const FeatureBitset &FeatureBits);
   };
 
@@ -1199,7 +1199,7 @@
   };
 
   struct TLBIMapper : AArch64NamedImmMapper {
-    const static Mapping TLBIPairs[];
+    const static Mapping TLBIMappings[];
 
     TLBIMapper();
   };
Index: lib/Target/AArch64/Utils/AArch64BaseInfo.cpp
===================================================================
--- lib/Target/AArch64/Utils/AArch64BaseInfo.cpp
+++ lib/Target/AArch64/Utils/AArch64BaseInfo.cpp
@@ -20,10 +20,10 @@
 using namespace llvm;
 
 StringRef AArch64NamedImmMapper::toString(uint32_t Value, bool &Valid) const {
-  for (unsigned i = 0; i < NumPairs; ++i) {
-    if (Pairs[i].Value == Value) {
+  for (unsigned i = 0; i < NumMappings; ++i) {
+    if (Mappings[i].Value == Value) {
       Valid = true;
-      return Pairs[i].Name;
+      return Mappings[i].Name;
     }
   }
 
@@ -33,10 +33,10 @@
 
 uint32_t AArch64NamedImmMapper::fromString(StringRef Name, bool &Valid) const {
   std::string LowerCaseName = Name.lower();
-  for (unsigned i = 0; i < NumPairs; ++i) {
-    if (Pairs[i].Name == LowerCaseName) {
+  for (unsigned i = 0; i < NumMappings; ++i) {
+    if (Mappings[i].Name == LowerCaseName) {
       Valid = true;
-      return Pairs[i].Value;
+      return Mappings[i].Value;
     }
   }
 
@@ -48,7 +48,7 @@
   return Value < TooBigImm;
 }
 
-const AArch64NamedImmMapper::Mapping AArch64AT::ATMapper::ATPairs[] = {
+const AArch64NamedImmMapper::Mapping AArch64AT::ATMapper::ATMappings[] = {
   {"s1e1r", S1E1R},
   {"s1e2r", S1E2R},
   {"s1e3r", S1E3R},
@@ -64,9 +64,9 @@
 };
 
 AArch64AT::ATMapper::ATMapper()
-  : AArch64NamedImmMapper(ATPairs, 0) {}
+  : AArch64NamedImmMapper(ATMappings, 0) {}
 
-const AArch64NamedImmMapper::Mapping AArch64DB::DBarrierMapper::DBarrierPairs[] = {
+const AArch64NamedImmMapper::Mapping AArch64DB::DBarrierMapper::DBarrierMappings[] = {
   {"oshld", OSHLD},
   {"oshst", OSHST},
   {"osh", OSH},
@@ -82,9 +82,9 @@
 };
 
 AArch64DB::DBarrierMapper::DBarrierMapper()
-  : AArch64NamedImmMapper(DBarrierPairs, 16u) {}
+  : AArch64NamedImmMapper(DBarrierMappings, 16u) {}
 
-const AArch64NamedImmMapper::Mapping AArch64DC::DCMapper::DCPairs[] = {
+const AArch64NamedImmMapper::Mapping AArch64DC::DCMapper::DCMappings[] = {
   {"zva", ZVA},
   {"ivac", IVAC},
   {"isw", ISW},
@@ -96,25 +96,25 @@
 };
 
 AArch64DC::DCMapper::DCMapper()
-  : AArch64NamedImmMapper(DCPairs, 0) {}
+  : AArch64NamedImmMapper(DCMappings, 0) {}
 
-const AArch64NamedImmMapper::Mapping AArch64IC::ICMapper::ICPairs[] = {
+const AArch64NamedImmMapper::Mapping AArch64IC::ICMapper::ICMappings[] = {
   {"ialluis",  IALLUIS},
   {"iallu", IALLU},
   {"ivau", IVAU}
 };
 
 AArch64IC::ICMapper::ICMapper()
-  : AArch64NamedImmMapper(ICPairs, 0) {}
+  : AArch64NamedImmMapper(ICMappings, 0) {}
 
-const AArch64NamedImmMapper::Mapping AArch64ISB::ISBMapper::ISBPairs[] = {
+const AArch64NamedImmMapper::Mapping AArch64ISB::ISBMapper::ISBMappings[] = {
   {"sy",  SY},
 };
 
 AArch64ISB::ISBMapper::ISBMapper()
-  : AArch64NamedImmMapper(ISBPairs, 16) {}
+  : AArch64NamedImmMapper(ISBMappings, 16) {}
 
-const AArch64NamedImmMapper::Mapping AArch64PRFM::PRFMMapper::PRFMPairs[] = {
+const AArch64NamedImmMapper::Mapping AArch64PRFM::PRFMMapper::PRFMMappings[] = {
   {"pldl1keep", PLDL1KEEP},
   {"pldl1strm", PLDL1STRM},
   {"pldl2keep", PLDL2KEEP},
@@ -136,18 +136,18 @@
 };
 
 AArch64PRFM::PRFMMapper::PRFMMapper()
-  : AArch64NamedImmMapper(PRFMPairs, 32) {}
+  : AArch64NamedImmMapper(PRFMMappings, 32) {}
 
-const AArch64NamedImmMapper::Mapping AArch64PState::PStateMapper::PStatePairs[] = {
+const AArch64NamedImmMapper::Mapping AArch64PState::PStateMapper::PStateMappings[] = {
   {"spsel", SPSel},
   {"daifset", DAIFSet},
   {"daifclr", DAIFClr}
 };
 
 AArch64PState::PStateMapper::PStateMapper()
-  : AArch64NamedImmMapper(PStatePairs, 0) {}
+  : AArch64NamedImmMapper(PStateMappings, 0) {}
 
-const AArch64NamedImmMapper::Mapping AArch64SysReg::MRSMapper::MRSPairs[] = {
+const AArch64NamedImmMapper::Mapping AArch64SysReg::MRSMapper::MRSMappings[] = {
   {"mdccsr_el0", MDCCSR_EL0},
   {"dbgdtrrx_el0", DBGDTRRX_EL0},
   {"mdrar_el1", MDRAR_EL1},
@@ -248,11 +248,11 @@
 
 AArch64SysReg::MRSMapper::MRSMapper(const FeatureBitset &FeatureBits)
   : SysRegMapper(FeatureBits) {
-    InstPairs = &MRSPairs[0];
-    NumInstPairs = llvm::array_lengthof(MRSPairs);
+    InstMappings = &MRSMappings[0];
+    NumInstMappings = llvm::array_lengthof(MRSMappings);
 }
 
-const AArch64NamedImmMapper::Mapping AArch64SysReg::MSRMapper::MSRPairs[] = {
+const AArch64NamedImmMapper::Mapping AArch64SysReg::MSRMapper::MSRMappings[] = {
   {"dbgdtrtx_el0", DBGDTRTX_EL0},
   {"oslar_el1", OSLAR_EL1},
   {"pmswinc_el0", PMSWINC_EL0},
@@ -272,12 +272,12 @@
 
 AArch64SysReg::MSRMapper::MSRMapper(const FeatureBitset &FeatureBits)
   : SysRegMapper(FeatureBits) {
-    InstPairs = &MSRPairs[0];
-    NumInstPairs = llvm::array_lengthof(MSRPairs);
+    InstMappings = &MSRMappings[0];
+    NumInstMappings = llvm::array_lengthof(MSRMappings);
 }
 
 
-const AArch64NamedImmMapper::Mapping AArch64SysReg::SysRegMapper::SysRegPairs[] = {
+const AArch64NamedImmMapper::Mapping AArch64SysReg::SysRegMapper::SysRegMappings[] = {
   {"osdtrrx_el1", OSDTRRX_EL1},
   {"osdtrtx_el1",  OSDTRTX_EL1},
   {"teecr32_el1", TEECR32_EL1},
@@ -757,7 +757,7 @@
 };
 
 const AArch64NamedImmMapper::Mapping
-AArch64SysReg::SysRegMapper::CycloneSysRegPairs[] = {
+AArch64SysReg::SysRegMapper::CycloneSysRegMappings[] = {
   {"cpm_ioacc_ctl_el3", CPM_IOACC_CTL_EL3}
 };
 
@@ -766,29 +766,29 @@
   std::string NameLower = Name.lower();
 
   // First search the registers shared by all
-  for (unsigned i = 0; i < array_lengthof(SysRegPairs); ++i) {
-    if (SysRegPairs[i].Name == NameLower) {
+  for (unsigned i = 0; i < array_lengthof(SysRegMappings); ++i) {
+    if (SysRegMappings[i].Name == NameLower) {
       Valid = true;
-      return SysRegPairs[i].Value;
+      return SysRegMappings[i].Value;
     }
   }
 
   // Next search for target specific registers
   if (FeatureBits[AArch64::ProcCyclone]) {
-    for (unsigned i = 0; i < array_lengthof(CycloneSysRegPairs); ++i) {
-      if (CycloneSysRegPairs[i].Name == NameLower) {
+    for (unsigned i = 0; i < array_lengthof(CycloneSysRegMappings); ++i) {
+      if (CycloneSysRegMappings[i].Name == NameLower) {
         Valid = true;
-        return CycloneSysRegPairs[i].Value;
+        return CycloneSysRegMappings[i].Value;
       }
     }
   }
 
   // Now try the instruction-specific registers (either read-only or
   // write-only).
-  for (unsigned i = 0; i < NumInstPairs; ++i) {
-    if (InstPairs[i].Name == NameLower) {
+  for (unsigned i = 0; i < NumInstMappings; ++i) {
+    if (InstMappings[i].Name == NameLower) {
       Valid = true;
-      return InstPairs[i].Value;
+      return InstMappings[i].Value;
     }
   }
 
@@ -817,26 +817,26 @@
 std::string
 AArch64SysReg::SysRegMapper::toString(uint32_t Bits) const {
   // First search the registers shared by all
-  for (unsigned i = 0; i < array_lengthof(SysRegPairs); ++i) {
-    if (SysRegPairs[i].Value == Bits) {
-      return SysRegPairs[i].Name;
+  for (unsigned i = 0; i < array_lengthof(SysRegMappings); ++i) {
+    if (SysRegMappings[i].Value == Bits) {
+      return SysRegMappings[i].Name;
     }
   }
 
   // Next search for target specific registers
   if (FeatureBits[AArch64::ProcCyclone]) {
-    for (unsigned i = 0; i < array_lengthof(CycloneSysRegPairs); ++i) {
-      if (CycloneSysRegPairs[i].Value == Bits) {
-        return CycloneSysRegPairs[i].Name;
+    for (unsigned i = 0; i < array_lengthof(CycloneSysRegMappings); ++i) {
+      if (CycloneSysRegMappings[i].Value == Bits) {
+        return CycloneSysRegMappings[i].Name;
       }
     }
   }
 
   // Now try the instruction-specific registers (either read-only or
   // write-only).
-  for (unsigned i = 0; i < NumInstPairs; ++i) {
-    if (InstPairs[i].Value == Bits) {
-      return InstPairs[i].Name;
+  for (unsigned i = 0; i < NumInstMappings; ++i) {
+    if (InstMappings[i].Value == Bits) {
+      return InstMappings[i].Name;
     }
   }
 
@@ -851,7 +851,7 @@
                + "_c" + utostr(CRm) + "_" + utostr(Op2);
 }
 
-const AArch64NamedImmMapper::Mapping AArch64TLBI::TLBIMapper::TLBIPairs[] = {
+const AArch64NamedImmMapper::Mapping AArch64TLBI::TLBIMapper::TLBIMappings[] = {
   {"ipas2e1is", IPAS2E1IS},
   {"ipas2le1is", IPAS2LE1IS},
   {"vmalle1is", VMALLE1IS},
@@ -887,4 +887,4 @@
 };
 
 AArch64TLBI::TLBIMapper::TLBIMapper()
-  : AArch64NamedImmMapper(TLBIPairs, 0) {}
+  : AArch64NamedImmMapper(TLBIMappings, 0) {}