Nikita Popov 127ed9ae26 [PowerPC] Use zext instead of anyext in custom and combine (#68784) ...

This custom combine currently converts `and(anyext(x),c)` into
`anyext(and(x,c))`. This is not correct, because the original expression
guaranteed that the high bits are zero, while the new one sets them to
undef.

Emit `zext(and(x,c))` instead.

Fixes https://github.com/llvm/llvm-project/issues/68783.

2023-10-12 09:32:17 +02:00

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