If all non‐negative Mask elements are the same value, return that value. If all elements are negative (undefined) or Mask contains different non‐negative values, return ‐1.
Synopses
Declared in <llvm/Analysis/VectorUtils.h>
If all non‐negative Mask elements are the same value, return that value. If all elements are negative (undefined) or Mask contains different non‐negative values, return ‐1.
int
getSplatIndex(ArrayRef<int> Mask);std::optional<int>
getSplatIndex(MachineInstr& MI);Return Value
The splat index of a G_SHUFFLE_VECTOR MI when MI is a splat. If MI is not a splat, returns std::nullopt.
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