Index: include/llvm/Object/ELFObjectFile.h
===================================================================
--- include/llvm/Object/ELFObjectFile.h
+++ include/llvm/Object/ELFObjectFile.h
@@ -844,6 +844,8 @@
       return "ELF32-sparc";
     case ELF::EM_WEBASSEMBLY:
       return "ELF32-wasm";
+    case ELF::EM_AMDGPU:
+      return "ELF32-amdgcn";
     default:
       return "ELF32-unknown";
     }
@@ -865,6 +867,10 @@
       return "ELF64-mips";
     case ELF::EM_WEBASSEMBLY:
       return "ELF64-wasm";
+    case ELF::EM_AMDGPU:
+      return (EF.getHeader()->e_ident[ELF::EI_OSABI] == ELF::ELFOSABI_AMDGPU_HSA
+              && IsLittleEndian) ?
+             "ELF64-amdgcn-hsacobj" : "ELF64-amdgcn";
     default:
       return "ELF64-unknown";
     }
@@ -919,6 +925,12 @@
     default: return Triple::UnknownArch;
     }
 
+  case ELF::EM_AMDGPU:
+    return (EF.getHeader()->e_ident[ELF::EI_CLASS] == ELF::ELFCLASS64
+         && EF.getHeader()->e_ident[ELF::EI_OSABI] == ELF::ELFOSABI_AMDGPU_HSA
+         && IsLittleEndian) ?
+      Triple::amdgcn : Triple::UnknownArch;
+
   default:
     return Triple::UnknownArch;
   }