[llvm] [RISCV] Move vector pseudo hasAllNBitUsers switch into RISCVInstrInfo. NFC (PR #67593)

[Philip Reames via llvm-commits]

================
@@ -2779,119 +2779,11 @@ static bool vectorPseudoHasAllNBitUsers(SDNode *User, unsigned UserOpNo,
   if (UserOpNo == VLIdx)
     return false;
 
-  // TODO: Handle Zvbb instructions
-  switch (PseudoInfo->BaseInstr) {
-  default:
+  auto NumDemandedBits =
+      RISCV::getVectorLowDemandedScalarBits(PseudoInfo->BaseInstr, Log2SEW);
+  if (!NumDemandedBits || Bits < NumDemandedBits)
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preames wrote:

return (NumDemandedBits && Bits >= NumDemandedBits;

https://github.com/llvm/llvm-project/pull/67593