[llvm] [AMDGPU] Extend zero initialization of return values for TFE (PR #85759)

[Jay Foad via llvm-commits]

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@@ -119,6 +119,7 @@ class MTBUF_Real <MTBUF_Pseudo ps, string real_name = ps.Mnemonic> :
 
   let isPseudo = 0;
   let isCodeGenOnly = 0;
+  let hasPostISelHook = 1;
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jayfoad wrote:

Can this be removed now? Setting it on a Real seems weird anyway.

https://github.com/llvm/llvm-project/pull/85759