[PATCH] D139732: [AMDGPU] Add pass to rewrite partially used virtual superregisters after RenameIndependentSubregs pass with registers of minimal size (WIP)

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added inline comments.


================
Comment at: llvm/lib/Target/AMDGPU/GCNRewritePartialRegUses.cpp:119-120
+      auto *NewRC = TRI->getSubRegisterClass(RC, MatchSR);
+      if (NewRC && NewRC->isAllocatable())
+        return NewRC;
+    }
----------------
getAllocatableClass


Repository:
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  https://reviews.llvm.org/D139732/new/

https://reviews.llvm.org/D139732