Remove COPY_TO_REGCLASS

Author: jayfoad

llvm/lib/Target/AMDGPU/SIInstructions.td

@@ -2483,8 +2483,7 @@ def : AMDGPUPatIgnoreCopies <
 // (z & ~x)
 def : AMDGPUPatIgnoreCopies <
   (DivergentBinFrag<and> i32:$z, (not_oneuse i32:$x)),
-  (V_BFI_B32_e64 (COPY_TO_REGCLASS VSrc_b32:$x, VGPR_32), (i32 0),
-                 (COPY_TO_REGCLASS VSrc_b32:$z, VGPR_32))
+  (V_BFI_B32_e64 VSrc_b32:$x, (i32 0), VSrc_b32:$z)
 >;
 
 // 64-bit version