[PATCH] D37758: [AMDGPU] For amdpal, widen interpolation mode workaround

[Nicolai Hähnle via Phabricator via llvm-commits]

nhaehnle added inline comments.


================
Comment at: lib/Target/AMDGPU/SIISelLowering.cpp:1511-1517
+      unsigned PsInputBits = Info->getPSInputAddr() & Info->getPSInputEnable();
+      if ((PsInputBits & 0x7F) == 0 ||
+          ((PsInputBits & 0xF) == 0 &&
+           (PsInputBits >> 11 & 1)))
+        Info->markPSInputEnabled(
+            countTrailingZeros(Info->getPSInputAddr(), ZB_Undefined));
     }
----------------
Could you make this guarded by isAmdPalOS? For Mesa, it's possible that another shader part will enable some of those input bits, so we want to set those enables only after the combined enable mask is known.


https://reviews.llvm.org/D37758