[PATCH] D143762: [AMDGPU] Enable whole wave register copy

[Yashwant Singh via Phabricator via llvm-commits]

yassingh added inline comments.


================
Comment at: llvm/lib/Target/AMDGPU/SILowerWWMCopies.cpp:144
+  }
+
+  return Changed;
----------------
arsenm wrote:
> In a follow up could release the reserved register
I don't understand, since sgpr allocation is already done do we have to free the reserved sgprs? Also, can you refer me to some other reserved registers to see how do I release it.


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  https://reviews.llvm.org/D143762/new/

https://reviews.llvm.org/D143762