[PATCH] D148647: [RISCV] Fix interleave crash on unary interleaves

[Craig Topper via Phabricator via llvm-commits]

craig.topper added inline comments.


================
Comment at: llvm/lib/Target/RISCV/RISCVISelLowering.cpp:3297
+  int NumEltsPerOp = NumElts / 2;
+
+  int MaskRange;
----------------
I think you maybe you want

I think maybe you can do something like

```
int HalfNumElts = NumElts / 2;
return (((EvenSrc % NumElts) + HalfNumElts) <= NumElts) &&
            (((OddSrc % NumElts) + HalfNumElts) <= NumElts);
```


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D148647/new/

https://reviews.llvm.org/D148647