[llvm] AMDGPU: Document address spaces as reserved (PR #163996)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-amdgpu

Author: Nicolai Hähnle (nhaehnle)

<details>
<summary>Changes</summary>

They are going to be used for internal work downstream that we do expect to upstream eventually.

---
Full diff: https://github.com/llvm/llvm-project/pull/163996.diff


1 Files Affected:

- (modified) llvm/docs/AMDGPUUsage.rst (+2) 


``````````diff
diff --git a/llvm/docs/AMDGPUUsage.rst b/llvm/docs/AMDGPUUsage.rst
index 8193adcd97a19..e062032313058 100644
--- a/llvm/docs/AMDGPUUsage.rst
+++ b/llvm/docs/AMDGPUUsage.rst
@@ -883,6 +883,8 @@ supported for the ``amdgcn`` target.
      Buffer Fat Pointer                    7               N/A         N/A              160     0
      Buffer Resource                       8               N/A         V#               128     0x00000000000000000000000000000000
      Buffer Strided Pointer (experimental) 9               *TODO*
+     *reserved for downstream use*         10
+     *reserved for downstream use*         11
      Streamout Registers                   128             N/A         GS_REGS
      ===================================== =============== =========== ================ ======= ============================
 

``````````

</details>


https://github.com/llvm/llvm-project/pull/163996