diff --git a/llvm/include/llvm/BinaryFormat/Magic.h b/llvm/include/llvm/BinaryFormat/Magic.h
--- a/llvm/include/llvm/BinaryFormat/Magic.h
+++ b/llvm/include/llvm/BinaryFormat/Magic.h
@@ -51,6 +51,7 @@
     wasm_object,         ///< WebAssembly Object file
     pdb,                 ///< Windows PDB debug info file
     tapi_file,           ///< Text-based Dynamic Library Stub file
+    cuda_fatbinary,      ///< CUDA Fatbinary object file
   };
 
   bool is_object() const { return V != unknown; }
diff --git a/llvm/lib/BinaryFormat/Magic.cpp b/llvm/lib/BinaryFormat/Magic.cpp
--- a/llvm/lib/BinaryFormat/Magic.cpp
+++ b/llvm/lib/BinaryFormat/Magic.cpp
@@ -185,6 +185,10 @@
   case 0x84: // Alpha 64-bit
   case 0x66: // MPS R4000 Windows
   case 0x50: // mc68K
+    if (startswith(Magic, "\x50\xed\x55\xba"))
+      return file_magic::cuda_fatbinary;
+    LLVM_FALLTHROUGH;
+
   case 0x4c: // 80386 Windows
   case 0xc4: // ARMNT Windows
     if (Magic[1] == 0x01)
diff --git a/llvm/lib/Object/Binary.cpp b/llvm/lib/Object/Binary.cpp
--- a/llvm/lib/Object/Binary.cpp
+++ b/llvm/lib/Object/Binary.cpp
@@ -82,6 +82,7 @@
     // PDB does not support the Binary interface.
     return errorCodeToError(object_error::invalid_file_type);
   case file_magic::unknown:
+  case file_magic::cuda_fatbinary:
   case file_magic::coff_cl_gl_object:
     // Unrecognized object file format.
     return errorCodeToError(object_error::invalid_file_type);
diff --git a/llvm/lib/Object/ObjectFile.cpp b/llvm/lib/Object/ObjectFile.cpp
--- a/llvm/lib/Object/ObjectFile.cpp
+++ b/llvm/lib/Object/ObjectFile.cpp
@@ -146,6 +146,7 @@
   case file_magic::pdb:
   case file_magic::minidump:
   case file_magic::goff_object:
+  case file_magic::cuda_fatbinary:
     return errorCodeToError(object_error::invalid_file_type);
   case file_magic::tapi_file:
     return errorCodeToError(object_error::invalid_file_type);