[llvm] Reland [AMDGPU] Support block load/store for CSR #130013 (PR #137169)

[Diana Picus via llvm-commits]

================
@@ -388,6 +388,17 @@ class PrologEpilogSGPRSaveRestoreInfo {
   SGPRSaveKind getKind() const { return Kind; }
 };
 
+
----------------
rovka wrote:

```suggestion

```

https://github.com/llvm/llvm-project/pull/137169