diff --git a/llvm/include/llvm-c/Core.h b/llvm/include/llvm-c/Core.h
--- a/llvm/include/llvm-c/Core.h
+++ b/llvm/include/llvm-c/Core.h
@@ -163,7 +163,8 @@
   LLVMX86_AMXTypeKind,   /**< X86 AMX */
   LLVMTokenTypeKind,     /**< Tokens */
   LLVMScalableVectorTypeKind, /**< Scalable SIMD vector type */
-  LLVMBFloatTypeKind     /**< 16 bit brain floating point type */
+  LLVMBFloatTypeKind,    /**< 16 bit brain floating point type */
+  LLVMAArch64_LS64TypeKind, /**< 8 Consecutive GPRs (AArch64) */
 } LLVMTypeKind;
 
 typedef enum {
@@ -1500,6 +1501,11 @@
 LLVMTypeRef LLVMX86AMXTypeInContext(LLVMContextRef C);
 
 /**
+  * Create an AArch64 LS64 type in a context.
+  */
+LLVMTypeRef LLVMAArch64_LS64TypeInContext(LLVMContextRef C);
+
+/**
  * Create a token type in a context.
  */
 LLVMTypeRef LLVMTokenTypeInContext(LLVMContextRef C);
@@ -1517,7 +1523,7 @@
 LLVMTypeRef LLVMLabelType(void);
 LLVMTypeRef LLVMX86MMXType(void);
 LLVMTypeRef LLVMX86AMXType(void);
-
+LLVMTypeRef LLVMAArch64_LS64Type(void);
 /**
  * @}
  */
diff --git a/llvm/include/llvm/Bitcode/LLVMBitCodes.h b/llvm/include/llvm/Bitcode/LLVMBitCodes.h
--- a/llvm/include/llvm/Bitcode/LLVMBitCodes.h
+++ b/llvm/include/llvm/Bitcode/LLVMBitCodes.h
@@ -169,7 +169,8 @@
   TYPE_CODE_TOKEN = 22, // TOKEN
 
   TYPE_CODE_BFLOAT = 23, // BRAIN FLOATING POINT
-  TYPE_CODE_X86_AMX = 24 // X86 AMX
+  TYPE_CODE_X86_AMX = 24, // X86 AMX
+  TYPE_CODE_AARCH64_LS64 = 25 // 8 Consecutive GPRs (AArch64)
 };
 
 enum OperandBundleTagCode {
diff --git a/llvm/include/llvm/IR/DataLayout.h b/llvm/include/llvm/IR/DataLayout.h
--- a/llvm/include/llvm/IR/DataLayout.h
+++ b/llvm/include/llvm/IR/DataLayout.h
@@ -687,6 +687,8 @@
   case Type::DoubleTyID:
   case Type::X86_MMXTyID:
     return TypeSize::Fixed(64);
+  case Type::AArch64_LS64TyID:
+    return TypeSize::Fixed(512);
   case Type::PPC_FP128TyID:
   case Type::FP128TyID:
     return TypeSize::Fixed(128);
diff --git a/llvm/include/llvm/IR/Type.h b/llvm/include/llvm/IR/Type.h
--- a/llvm/include/llvm/IR/Type.h
+++ b/llvm/include/llvm/IR/Type.h
@@ -66,6 +66,7 @@
     MetadataTyID,  ///< Metadata
     X86_MMXTyID,   ///< MMX vectors (64 bits, X86 specific)
     X86_AMXTyID,   ///< AMX vectors (8192 bits, X86 specific)
+    AArch64_LS64TyID, ///< 8 consecutive GPRs (AArch64)
     TokenTyID,     ///< Tokens
 
     // Derived types... see DerivedTypes.h file.
@@ -186,6 +187,8 @@
   /// Return true if this is X86 AMX.
   bool isX86_AMXTy() const { return getTypeID() == X86_AMXTyID; }
 
+  bool isAArch64_LS64Ty() const { return getTypeID() == AArch64_LS64TyID; }
+
   /// Return true if this is a FP type or a vector of FP.
   bool isFPOrFPVectorTy() const { return getScalarType()->isFloatingPointTy(); }
 
@@ -273,7 +276,7 @@
     // If it's a primitive, it is always sized.
     if (getTypeID() == IntegerTyID || isFloatingPointTy() ||
         getTypeID() == PointerTyID || getTypeID() == X86_MMXTyID ||
-        getTypeID() == X86_AMXTyID)
+        getTypeID() == X86_AMXTyID || getTypeID() == AArch64_LS64TyID)
       return true;
     // If it is not something that can have a size (e.g. a function or label),
     // it doesn't have a size.
@@ -410,6 +413,7 @@
   static Type *getPPC_FP128Ty(LLVMContext &C);
   static Type *getX86_MMXTy(LLVMContext &C);
   static Type *getX86_AMXTy(LLVMContext &C);
+  static Type *getAArch64_LS64Ty(LLVMContext &C);
   static Type *getTokenTy(LLVMContext &C);
   static IntegerType *getIntNTy(LLVMContext &C, unsigned N);
   static IntegerType *getInt1Ty(LLVMContext &C);
@@ -466,6 +470,7 @@
   static PointerType *getPPC_FP128PtrTy(LLVMContext &C, unsigned AS = 0);
   static PointerType *getX86_MMXPtrTy(LLVMContext &C, unsigned AS = 0);
   static PointerType *getX86_AMXPtrTy(LLVMContext &C, unsigned AS = 0);
+  static PointerType *getAArch64_LS64PtrTy(LLVMContext &C, unsigned AS = 0);
   static PointerType *getIntNPtrTy(LLVMContext &C, unsigned N, unsigned AS = 0);
   static PointerType *getInt1PtrTy(LLVMContext &C, unsigned AS = 0);
   static PointerType *getInt8PtrTy(LLVMContext &C, unsigned AS = 0);
diff --git a/llvm/lib/AsmParser/LLLexer.cpp b/llvm/lib/AsmParser/LLLexer.cpp
--- a/llvm/lib/AsmParser/LLLexer.cpp
+++ b/llvm/lib/AsmParser/LLLexer.cpp
@@ -841,6 +841,7 @@
   TYPEKEYWORD("metadata",  Type::getMetadataTy(Context));
   TYPEKEYWORD("x86_mmx",   Type::getX86_MMXTy(Context));
   TYPEKEYWORD("x86_amx",   Type::getX86_AMXTy(Context));
+  TYPEKEYWORD("aarch64_ls64", Type::getAArch64_LS64Ty(Context));
   TYPEKEYWORD("token",     Type::getTokenTy(Context));
 
 #undef TYPEKEYWORD
diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
--- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -1766,6 +1766,9 @@
     case bitc::TYPE_CODE_X86_AMX:   // X86_AMX
       ResultTy = Type::getX86_AMXTy(Context);
       break;
+    case bitc::TYPE_CODE_AARCH64_LS64: // AArch64 LS64
+      ResultTy = Type::getAArch64_LS64Ty(Context);
+      break;
     case bitc::TYPE_CODE_TOKEN:     // TOKEN
       ResultTy = Type::getTokenTy(Context);
       break;
diff --git a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
--- a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
+++ b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
@@ -914,6 +914,7 @@
     case Type::MetadataTyID:  Code = bitc::TYPE_CODE_METADATA;  break;
     case Type::X86_MMXTyID:   Code = bitc::TYPE_CODE_X86_MMX;   break;
     case Type::X86_AMXTyID:   Code = bitc::TYPE_CODE_X86_AMX;   break;
+    case Type::AArch64_LS64TyID: Code = bitc::TYPE_CODE_AARCH64_LS64; break;
     case Type::TokenTyID:     Code = bitc::TYPE_CODE_TOKEN;     break;
     case Type::IntegerTyID:
       // INTEGER: [width]
diff --git a/llvm/lib/IR/AsmWriter.cpp b/llvm/lib/IR/AsmWriter.cpp
--- a/llvm/lib/IR/AsmWriter.cpp
+++ b/llvm/lib/IR/AsmWriter.cpp
@@ -610,6 +610,7 @@
   case Type::MetadataTyID:  OS << "metadata"; return;
   case Type::X86_MMXTyID:   OS << "x86_mmx"; return;
   case Type::X86_AMXTyID:   OS << "x86_amx"; return;
+  case Type::AArch64_LS64TyID: OS << "aarch64_ls64"; return;
   case Type::TokenTyID:     OS << "token"; return;
   case Type::IntegerTyID:
     OS << 'i' << cast<IntegerType>(Ty)->getBitWidth();
diff --git a/llvm/lib/IR/Core.cpp b/llvm/lib/IR/Core.cpp
--- a/llvm/lib/IR/Core.cpp
+++ b/llvm/lib/IR/Core.cpp
@@ -514,6 +514,8 @@
     return LLVMX86_MMXTypeKind;
   case Type::X86_AMXTyID:
     return LLVMX86_AMXTypeKind;
+  case Type::AArch64_LS64TyID:
+    return LLVMAArch64_LS64TypeKind;
   case Type::TokenTyID:
     return LLVMTokenTypeKind;
   case Type::ScalableVectorTyID:
@@ -820,6 +822,9 @@
 LLVMTypeRef LLVMMetadataTypeInContext(LLVMContextRef C) {
   return wrap(Type::getMetadataTy(*unwrap(C)));
 }
+LLVMTypeRef LLVMAArch64_LS64TypeInContext(LLVMContextRef C) {
+  return (LLVMTypeRef) Type::getAArch64_LS64Ty(*unwrap(C));
+}
 
 LLVMTypeRef LLVMVoidType(void)  {
   return LLVMVoidTypeInContext(LLVMGetGlobalContext());
@@ -827,6 +832,10 @@
 LLVMTypeRef LLVMLabelType(void) {
   return LLVMLabelTypeInContext(LLVMGetGlobalContext());
 }
+LLVMTypeRef LLVMAArch64_LS64Type(void) {
+  return LLVMAArch64_LS64TypeInContext(LLVMGetGlobalContext());
+}
+
 
 /*===-- Operations on values ----------------------------------------------===*/
 
diff --git a/llvm/lib/IR/DataLayout.cpp b/llvm/lib/IR/DataLayout.cpp
--- a/llvm/lib/IR/DataLayout.cpp
+++ b/llvm/lib/IR/DataLayout.cpp
@@ -812,6 +812,8 @@
   }
   case Type::X86_AMXTyID:
     return Align(64);
+  case Type::AArch64_LS64TyID:
+    return Align(64);
   default:
     llvm_unreachable("Bad type for getAlignment!!!");
   }
diff --git a/llvm/lib/IR/LLVMContextImpl.h b/llvm/lib/IR/LLVMContextImpl.h
--- a/llvm/lib/IR/LLVMContextImpl.h
+++ b/llvm/lib/IR/LLVMContextImpl.h
@@ -1418,7 +1418,7 @@
   // Basic type instances.
   Type VoidTy, LabelTy, HalfTy, BFloatTy, FloatTy, DoubleTy, MetadataTy,
       TokenTy;
-  Type X86_FP80Ty, FP128Ty, PPC_FP128Ty, X86_MMXTy, X86_AMXTy;
+  Type X86_FP80Ty, FP128Ty, PPC_FP128Ty, X86_MMXTy, X86_AMXTy, AArch64_LS64Ty;
   IntegerType Int1Ty, Int8Ty, Int16Ty, Int32Ty, Int64Ty, Int128Ty;
 
   BumpPtrAllocator Alloc;
diff --git a/llvm/lib/IR/LLVMContextImpl.cpp b/llvm/lib/IR/LLVMContextImpl.cpp
--- a/llvm/lib/IR/LLVMContextImpl.cpp
+++ b/llvm/lib/IR/LLVMContextImpl.cpp
@@ -36,6 +36,7 @@
     PPC_FP128Ty(C, Type::PPC_FP128TyID),
     X86_MMXTy(C, Type::X86_MMXTyID),
     X86_AMXTy(C, Type::X86_AMXTyID),
+    AArch64_LS64Ty(C, Type::AArch64_LS64TyID),
     Int1Ty(C, 1),
     Int8Ty(C, 8),
     Int16Ty(C, 16),
diff --git a/llvm/lib/IR/Type.cpp b/llvm/lib/IR/Type.cpp
--- a/llvm/lib/IR/Type.cpp
+++ b/llvm/lib/IR/Type.cpp
@@ -50,6 +50,7 @@
   case MetadataTyID  : return getMetadataTy(C);
   case X86_MMXTyID   : return getX86_MMXTy(C);
   case X86_AMXTyID   : return getX86_AMXTy(C);
+  case AArch64_LS64TyID : return getAArch64_LS64Ty(C);
   case TokenTyID     : return getTokenTy(C);
   default:
     return nullptr;
@@ -130,6 +131,7 @@
   case Type::PPC_FP128TyID: return TypeSize::Fixed(128);
   case Type::X86_MMXTyID: return TypeSize::Fixed(64);
   case Type::X86_AMXTyID: return TypeSize::Fixed(8192);
+  case Type::AArch64_LS64TyID: return TypeSize::Fixed(512);
   case Type::IntegerTyID:
     return TypeSize::Fixed(cast<IntegerType>(this)->getBitWidth());
   case Type::FixedVectorTyID:
@@ -190,6 +192,7 @@
 Type *Type::getPPC_FP128Ty(LLVMContext &C) { return &C.pImpl->PPC_FP128Ty; }
 Type *Type::getX86_MMXTy(LLVMContext &C) { return &C.pImpl->X86_MMXTy; }
 Type *Type::getX86_AMXTy(LLVMContext &C) { return &C.pImpl->X86_AMXTy; }
+Type *Type::getAArch64_LS64Ty(LLVMContext &C) { return &C.pImpl->AArch64_LS64Ty; }
 
 IntegerType *Type::getInt1Ty(LLVMContext &C) { return &C.pImpl->Int1Ty; }
 IntegerType *Type::getInt8Ty(LLVMContext &C) { return &C.pImpl->Int8Ty; }
@@ -238,6 +241,10 @@
   return getX86_AMXTy(C)->getPointerTo(AS);
 }
 
+PointerType *Type::getAArch64_LS64PtrTy(LLVMContext &C, unsigned AS) {
+  return getAArch64_LS64Ty(C)->getPointerTo(AS);
+}
+
 PointerType *Type::getIntNPtrTy(LLVMContext &C, unsigned N, unsigned AS) {
   return getIntNTy(C, N)->getPointerTo(AS);
 }
diff --git a/llvm/lib/Target/Hexagon/HexagonTargetObjectFile.cpp b/llvm/lib/Target/Hexagon/HexagonTargetObjectFile.cpp
--- a/llvm/lib/Target/Hexagon/HexagonTargetObjectFile.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonTargetObjectFile.cpp
@@ -326,6 +326,7 @@
   case Type::VoidTyID:
   case Type::BFloatTyID:
   case Type::X86_FP80TyID:
+  case Type::AArch64_LS64TyID:
   case Type::FP128TyID:
   case Type::PPC_FP128TyID:
   case Type::LabelTyID:
diff --git a/llvm/tools/llvm-c-test/echo.cpp b/llvm/tools/llvm-c-test/echo.cpp
--- a/llvm/tools/llvm-c-test/echo.cpp
+++ b/llvm/tools/llvm-c-test/echo.cpp
@@ -153,6 +153,8 @@
         return LLVMX86AMXTypeInContext(Ctx);
       case LLVMX86_MMXTypeKind:
         return LLVMX86MMXTypeInContext(Ctx);
+      case LLVMAArch64_LS64TypeKind:
+        return LLVMAArch64_LS64TypeInContext(Ctx);
       case LLVMTokenTypeKind:
         return LLVMTokenTypeInContext(Ctx);
     }