diff --git a/llvm/include/llvm/Support/COFF.h b/llvm/include/llvm/Support/COFF.h
index 19223306bd07..8d2a2ac62c94 100644
--- a/llvm/include/llvm/Support/COFF.h
+++ b/llvm/include/llvm/Support/COFF.h
@@ -349,6 +349,26 @@ namespace COFF {
     IMAGE_REL_ARM_BLX23T    = 0x0015
   };
 
+  enum RelocationTypesARM64 {
+    IMAGE_REL_ARM64_ABSOLUTE        = 0x0000,
+    IMAGE_REL_ARM64_ADDR32          = 0x0001,
+    IMAGE_REL_ARM64_ADDR32NB        = 0x0002,
+    IMAGE_REL_ARM64_BRANCH26        = 0x0003,
+    IMAGE_REL_ARM64_PAGEBASE_REL2   = 0x0004,
+    IMAGE_REL_ARM64_REL21           = 0x0005,
+    IMAGE_REL_ARM64_PAGEOFFSET_12A  = 0x0006,
+    IMAGE_REL_ARM64_PAGEOFFSET_12L  = 0x0007,
+    IMAGE_REL_ARM64_SECREL          = 0x0008,
+    IMAGE_REL_ARM64_SECREL_LOW12A   = 0x0009,
+    IMAGE_REL_ARM64_SECREL_HIGH12A  = 0x000A,
+    IMAGE_REL_ARM64_SECREL_LOW12L   = 0x000B,
+    IMAGE_REL_ARM64_TOKEN           = 0x000C,
+    IMAGE_REL_ARM64_SECTION         = 0x000D,
+    IMAGE_REL_ARM64_ADDR64          = 0x000E,
+    IMAGE_REL_ARM64_BRANCH19        = 0x000F,
+    IMAGE_REL_ARM64_BRANCH14        = 0x0010,
+  };
+
   enum COMDATType {
     IMAGE_COMDAT_SELECT_NODUPLICATES = 1,
     IMAGE_COMDAT_SELECT_ANY,