[llvm] [NVPTX] Teach NVPTX about predicates (PR #67468)

[Artem Belevich via llvm-commits]

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@@ -2095,6 +2168,8 @@ bool NVPTXDAGToDAGISel::tryStoreRetval(SDNode *N) {
   for (unsigned i = 0; i < NumElts; ++i)
     Ops.push_back(N->getOperand(i + 2));
   Ops.push_back(CurDAG->getTargetConstant(OffsetVal, DL, MVT::i32));
+  Ops.push_back(PRED(0));
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Artem-B wrote:

Nit: we could fold all those `push_back` into `Ops.append({....})`

https://github.com/llvm/llvm-project/pull/67468