diff --git a/llvm/include/llvm/BinaryFormat/MachO.h b/llvm/include/llvm/BinaryFormat/MachO.h
--- a/llvm/include/llvm/BinaryFormat/MachO.h
+++ b/llvm/include/llvm/BinaryFormat/MachO.h
@@ -1492,6 +1492,7 @@
 
 enum CPUSubTypeARM64 {
   CPU_SUBTYPE_ARM64_ALL = 0,
+  CPU_SUBTYPE_ARM64_V8 = 1,
   CPU_SUBTYPE_ARM64E = 2,
 };
 
diff --git a/llvm/test/tools/llvm-objdump/MachO/AArch64/macho-arm64-v8.test b/llvm/test/tools/llvm-objdump/MachO/AArch64/macho-arm64-v8.test
new file mode 100644
--- /dev/null
+++ b/llvm/test/tools/llvm-objdump/MachO/AArch64/macho-arm64-v8.test
@@ -0,0 +1,18 @@
+# RUN: yaml2obj %s -o %tarm-v8.o
+# RUN: llvm-objdump -p %tarm-v8.o | FileCheck --strict-whitespace %s
+
+# CHECK:      Mach header
+# CHECK-NEXT:       magic cputype cpusubtype  caps    filetype ncmds sizeofcmds      flags
+# CHECK-NEXT: MH_MAGIC_64   ARM64         V8  0x00      OBJECT     0          0 0x00000000
+
+--- !mach-o
+FileHeader:
+  magic:           0xFEEDFACF
+  cputype:         0x0100000C
+  cpusubtype:      0x00000001
+  filetype:        0x00000001
+  ncmds:           0
+  sizeofcmds:      0
+  flags:           0x00000000
+  reserved:        0x00000000
+...
diff --git a/llvm/test/tools/llvm-readobj/MachO/file-headers-arm64.test b/llvm/test/tools/llvm-readobj/MachO/file-headers-arm64.test
new file mode 100644
--- /dev/null
+++ b/llvm/test/tools/llvm-readobj/MachO/file-headers-arm64.test
@@ -0,0 +1,77 @@
+## Check subtype Arm64-ALL:
+# RUN: yaml2obj %s -o %t.arm -DSUBTYPE=0x0
+# RUN: llvm-readobj -h %t.arm \
+# RUN:  | FileCheck %s --strict-whitespace --match-full-lines -DFILE=%t.arm --check-prefix=ARM64-ALL
+
+#      ARM64-ALL:File: [[FILE]]
+# ARM64-ALL-NEXT:Format: Mach-O arm64
+# ARM64-ALL-NEXT:Arch: aarch64
+# ARM64-ALL-NEXT:AddressSize: 64bit
+# ARM64-ALL-NEXT:MachHeader {
+# ARM64-ALL-NEXT:  Magic: Magic64 (0xFEEDFACF)
+# ARM64-ALL-NEXT:  CpuType: Arm64 (0x100000C)
+# ARM64-ALL-NEXT:  CpuSubType: CPU_SUBTYPE_ARM64_ALL (0x0)
+# ARM64-ALL-NEXT:  FileType: Relocatable (0x1)
+# ARM64-ALL-NEXT:  NumOfLoadCommands: 0
+# ARM64-ALL-NEXT:  SizeOfLoadCommands: 0
+# ARM64-ALL-NEXT:  Flags [ (0x0)
+# ARM64-ALL-NEXT:  ]
+# ARM64-ALL-NEXT:  Reserved: 0x0
+# ARM64-ALL-NEXT:}
+# ARM64-ALL-NOT:{{.}}
+
+## Check subtype Arm64-V8:
+# RUN: yaml2obj %s -o %t.arm -DSUBTYPE=0x1
+# RUN: llvm-readobj -h %t.arm \
+# RUN:  | FileCheck %s --strict-whitespace --match-full-lines -DFILE=%t.arm --check-prefix=ARM64-V8
+
+#      ARM64-V8:File: [[FILE]]
+# ARM64-V8-NEXT:Format: Mach-O arm64
+# ARM64-V8-NEXT:Arch: aarch64
+# ARM64-V8-NEXT:AddressSize: 64bit
+# ARM64-V8-NEXT:MachHeader {
+# ARM64-V8-NEXT:  Magic: Magic64 (0xFEEDFACF)
+# ARM64-V8-NEXT:  CpuType: Arm64 (0x100000C)
+# ARM64-V8-NEXT:  CpuSubType: CPU_SUBTYPE_ARM64_V8 (0x1)
+# ARM64-V8-NEXT:  FileType: Relocatable (0x1)
+# ARM64-V8-NEXT:  NumOfLoadCommands: 0
+# ARM64-V8-NEXT:  SizeOfLoadCommands: 0
+# ARM64-V8-NEXT:  Flags [ (0x0)
+# ARM64-V8-NEXT:  ]
+# ARM64-V8-NEXT:  Reserved: 0x0
+# ARM64-V8-NEXT:}
+# ARM64-V8-NOT:{{.}}
+
+## Check subtype Arm64E:
+# RUN: yaml2obj %s -o %t.arm -DSUBTYPE=0x2
+# RUN: llvm-readobj -h %t.arm \
+# RUN:  | FileCheck %s --strict-whitespace --match-full-lines -DFILE=%t.arm --check-prefix=ARM64E
+
+#      ARM64E:File: [[FILE]]
+# ARM64E-NEXT:Format: Mach-O arm64
+# ARM64E-NEXT:Arch: aarch64
+# ARM64E-NEXT:AddressSize: 64bit
+# ARM64E-NEXT:MachHeader {
+# ARM64E-NEXT:  Magic: Magic64 (0xFEEDFACF)
+# ARM64E-NEXT:  CpuType: Arm64 (0x100000C)
+# ARM64E-NEXT:  CpuSubType: CPU_SUBTYPE_ARM64E (0x2)
+# ARM64E-NEXT:  FileType: Relocatable (0x1)
+# ARM64E-NEXT:  NumOfLoadCommands: 0
+# ARM64E-NEXT:  SizeOfLoadCommands: 0
+# ARM64E-NEXT:  Flags [ (0x0)
+# ARM64E-NEXT:  ]
+# ARM64E-NEXT:  Reserved: 0x0
+# ARM64E-NEXT:}
+# ARM64E-NOT:{{.}}
+
+--- !mach-o
+FileHeader:
+  magic:           0xFEEDFACF
+  cputype:         0x0100000C
+  cpusubtype:      [[SUBTYPE]]
+  filetype:        0x00000001
+  ncmds:           0
+  sizeofcmds:      0
+  flags:           0x00000000
+  reserved:        0x00000000
+...
diff --git a/llvm/tools/llvm-objdump/MachODump.cpp b/llvm/tools/llvm-objdump/MachODump.cpp
--- a/llvm/tools/llvm-objdump/MachODump.cpp
+++ b/llvm/tools/llvm-objdump/MachODump.cpp
@@ -2109,6 +2109,10 @@
       outs() << "    cputype CPU_TYPE_ARM64\n";
       outs() << "    cpusubtype CPU_SUBTYPE_ARM64_ALL\n";
       break;
+    case MachO::CPU_SUBTYPE_ARM64_V8:
+      outs() << "    cputype CPU_TYPE_ARM64\n";
+      outs() << "    cpusubtype CPU_SUBTYPE_ARM64_V8\n";
+      break;
     case MachO::CPU_SUBTYPE_ARM64E:
       outs() << "    cputype CPU_TYPE_ARM64\n";
       outs() << "    cpusubtype CPU_SUBTYPE_ARM64E\n";
@@ -8315,6 +8319,9 @@
       case MachO::CPU_SUBTYPE_ARM64_ALL:
         outs() << "        ALL";
         break;
+      case MachO::CPU_SUBTYPE_ARM64_V8:
+        outs() << "         V8";
+        break;
       case MachO::CPU_SUBTYPE_ARM64E:
         outs() << "          E";
         break;
diff --git a/llvm/tools/llvm-readobj/MachODumper.cpp b/llvm/tools/llvm-readobj/MachODumper.cpp
--- a/llvm/tools/llvm-readobj/MachODumper.cpp
+++ b/llvm/tools/llvm-readobj/MachODumper.cpp
@@ -161,8 +161,9 @@
 };
 
 static const EnumEntry<uint32_t> MachOHeaderCpuSubtypesARM64[] = {
-  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM64_ALL),
-  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM64E),
+    LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM64_ALL),
+    LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM64_V8),
+    LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM64E),
 };
 
 static const EnumEntry<uint32_t> MachOHeaderCpuSubtypesSPARC[] = {