[PATCH] D96336: [AMDGPU] Save VGPR of whole wave when spilling

[Sebastian Neubauer via Phabricator via llvm-commits]

sebastian-ne added inline comments.


================
Comment at: llvm/lib/Target/AMDGPU/SIMachineFunctionInfo.h:494-495
 
+  /// When spilling SGPRs, we may need a temporary stack slot to free a VGPR.
+  Optional<int> SpillSGPRTmpIndex;
+
----------------
arsenm wrote:
> Why doesn't this use the normal emergency stack slot?
How do I get the emergency stack slot?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D96336/new/

https://reviews.llvm.org/D96336