I don't remember the last rule. I thought the modulo did still apply.
> (But the canonical form is to remove obvious modulo opportunities.)
>
> E.g. a VLA reverse-and-rotate pattern might have { N-2, N-3, N-4, ... }.
> That will wrap at the final position to 2N-1, but that seems OK
Richard Biener via Gcc-patches writes:
> The following adjusts the tree.def documentation about VEC_PERM_EXPR
> which wasn't adjusted when the restrictions of permutes with constant
> mask were relaxed.
I was going to complain about having two copies of the documentation,
but then I realised that
The following adjusts the tree.def documentation about VEC_PERM_EXPR
which wasn't adjusted when the restrictions of permutes with constant
mask were relaxed.
OK?
Thanks,
Richard.
PR middle-end/110541
* tree.def (VEC_PERM_EXPR): Adjust documentation to reflect
reality.
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