[PATCH] D89170: [AMDGPU] Use flat scratch instructions where available

[Stanislav Mekhanoshin via Phabricator via llvm-commits]

rampitec added inline comments.


================
Comment at: llvm/lib/Target/AMDGPU/SIInstrInfo.cpp:4308-4311
+  if (Reg.isPhysical())
+    return DRC->contains(Reg);
+
+  const TargetRegisterClass *RC = MRI.getRegClass(Reg);
----------------
arsenm wrote:
> Unrelated change?
It is related, we just never hit it before. I am probing a physical SGPR to see if it is legal. RC is SReg_32, but DRC for scratch instructions is SReg_32_XEXEC_HI and test fails.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D89170/new/

https://reviews.llvm.org/D89170