[llvm] [NVPTX] miscellaneous minor cleanup (NFC) (PR #152329)

[Alex MacLean via llvm-commits]

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@@ -1774,37 +1771,20 @@ SDValue NVPTXDAGToDAGISel::selectPossiblyImm(SDValue V) {
   return V;
 }
 
-bool NVPTXDAGToDAGISel::ChkMemSDNodeAddressSpace(SDNode *N,
-                                                 unsigned int spN) const {
-  const Value *Src = nullptr;
-  if (MemSDNode *mN = dyn_cast<MemSDNode>(N)) {
-    if (spN == 0 && mN->getMemOperand()->getPseudoValue())
-      return true;
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AlexMaclean wrote:

I'm not really sure. In practice I think that for the cases where this pattern is used, this code might be dead. At least it doesn't seem to cause any issues to remove it...

https://github.com/llvm/llvm-project/pull/152329