diff --git a/llvm/docs/AMDGPUUsage.rst b/llvm/docs/AMDGPUUsage.rst
--- a/llvm/docs/AMDGPUUsage.rst
+++ b/llvm/docs/AMDGPUUsage.rst
@@ -1163,6 +1163,7 @@
      *reserved*                           0x040      Reserved.
      *reserved*                           0x041      Reserved.
      ``EF_AMDGPU_MACH_AMDGCN_GFX1013``    0x042      ``gfx1013``
+     *reserved*                           0x043      Reserved.
      ==================================== ========== =============================
 
 Sections
diff --git a/llvm/include/llvm/BinaryFormat/ELF.h b/llvm/include/llvm/BinaryFormat/ELF.h
--- a/llvm/include/llvm/BinaryFormat/ELF.h
+++ b/llvm/include/llvm/BinaryFormat/ELF.h
@@ -743,10 +743,11 @@
   EF_AMDGPU_MACH_AMDGCN_RESERVED_0X40 = 0x040,
   EF_AMDGPU_MACH_AMDGCN_RESERVED_0X41 = 0x041,
   EF_AMDGPU_MACH_AMDGCN_GFX1013       = 0x042,
+  EF_AMDGPU_MACH_AMDGCN_RESERVED_0X43 = 0x043,
 
   // First/last AMDGCN-based processors.
   EF_AMDGPU_MACH_AMDGCN_FIRST = EF_AMDGPU_MACH_AMDGCN_GFX600,
-  EF_AMDGPU_MACH_AMDGCN_LAST = EF_AMDGPU_MACH_AMDGCN_GFX1013,
+  EF_AMDGPU_MACH_AMDGCN_LAST = EF_AMDGPU_MACH_AMDGCN_RESERVED_0X43,
 
   // Indicates if the "xnack" target feature is enabled for all code contained
   // in the object.