| Issue |
146037
|
| Summary |
[VectorCombine] Generalise foldBitOpOfBitcasts into foldBitOpOfCastops
|
| Labels |
good first issue,
llvm::vectorcombine
|
| Assignees |
|
| Reporter |
RKSimon
|
foldBitOpOfBitcasts allows us to fold bitlogic(bitcast(x),bitcast(y)) -> bitcast(bitlogic(x,y)) if x and y are the same type and it doesn't cost anymore.
We can generalise this to work with other matching cast ops (trunc/sext/zext) - similar to how foldShuffleOfCastops works (although much simpler as there's no shuffle mask manipulation to do).
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