[llvm] [SLP] Make getSameOpcode support interchangeable instructions. (PR #127450)

[Alexey Bataev via llvm-commits]

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@@ -2447,42 +2679,44 @@ class BoUpSLP {
       ArgSize = isa<IntrinsicInst>(MainOp) ? IntrinsicNumOperands : NumOperands;
       OpsVec.resize(NumOperands);
       unsigned NumLanes = VL.size();
-      for (unsigned OpIdx = 0; OpIdx != NumOperands; ++OpIdx) {
+      for (unsigned OpIdx = 0; OpIdx != NumOperands; ++OpIdx)
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alexey-bataev wrote:

```suggestion
      for (unsigned OpIdx : seq<unsigned>(NumOperands))
```


https://github.com/llvm/llvm-project/pull/127450