[llvm] [RISCV][RFC] Add additional opcodes to RISCVDAGToDAGISel::hasAllNBitUsers (PR #147728)

[Craig Topper via llvm-commits]

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@@ -3753,20 +3764,42 @@ bool RISCVDAGToDAGISel::hasAllNBitUsers(SDNode *Node, unsigned Bits,
         break;
       [[fallthrough]];
     }
+    case RISCV::COPY:
+    case RISCV::PHI:
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topperc wrote:

I don't think you can see a PHI or COPY node in SelectionDAG.

https://github.com/llvm/llvm-project/pull/147728