[llvm] AMDGPU/NFC: Reserve 0x055 MACH in e_flag for future use (PR #81501)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-backend-amdgpu

@llvm/pr-subscribers-llvm-binary-utilities

Author: Konstantin Zhuravlyov (kzhuravl)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/81501.diff


2 Files Affected:

- (modified) llvm/docs/AMDGPUUsage.rst (+1) 
- (modified) llvm/include/llvm/BinaryFormat/ELF.h (+1) 


``````````diff
diff --git a/llvm/docs/AMDGPUUsage.rst b/llvm/docs/AMDGPUUsage.rst
index f253648d683e60..ddd5fd487669d1 100644
--- a/llvm/docs/AMDGPUUsage.rst
+++ b/llvm/docs/AMDGPUUsage.rst
@@ -1863,6 +1863,7 @@ The AMDGPU backend uses the following ELF header:
      ``EF_AMDGPU_MACH_AMDGCN_GFX10_1_GENERIC``  0x052      ``gfx10.1-generic``
      ``EF_AMDGPU_MACH_AMDGCN_GFX10_3_GENERIC``  0x053      ``gfx10.3-generic``
      ``EF_AMDGPU_MACH_AMDGCN_GFX11_GENERIC``    0x054      ``gfx11-generic``
+     *reserved*                                 0x055      Reserved.
      ========================================== ========== =============================
 
 Sections
diff --git a/llvm/include/llvm/BinaryFormat/ELF.h b/llvm/include/llvm/BinaryFormat/ELF.h
index 3eddaee4f7d1ad..8e0356a8efeb61 100644
--- a/llvm/include/llvm/BinaryFormat/ELF.h
+++ b/llvm/include/llvm/BinaryFormat/ELF.h
@@ -794,6 +794,7 @@ enum : unsigned {
   EF_AMDGPU_MACH_AMDGCN_GFX10_1_GENERIC   = 0x052,
   EF_AMDGPU_MACH_AMDGCN_GFX10_3_GENERIC   = 0x053,
   EF_AMDGPU_MACH_AMDGCN_GFX11_GENERIC     = 0x054,
+  EF_AMDGPU_MACH_AMDGCN_RESERVED_0X55 = 0x055,
   // clang-format on
 
   // First/last AMDGCN-based processors.

``````````

</details>


https://github.com/llvm/llvm-project/pull/81501