On Mon, Mar 20, 2023 at 02:31:31PM +0800, Kewen.Lin wrote:
> The failures on the original failed case builtin-bitops-1.c
> and the associated test case pr108699.c here show that the
> current support of parity vector mode is wrong on Power.
> The hardware insns vprtyb[wdq] which operate on the least
> significant bit of each byte per element, they doesn't match
> what RTL opcode parity needs, but the current implementation
> expands it with them wrongly.
>
> This patch is to fix the handling with one more insn vpopcntb.
>
> Comparing to v2 [1]:
> - Use rs6000_vprtyb<mode>2 rather than parityb<mode>2, and
> adjust several places with it accordingly.
>
> Bootstrapped and regtested on powerpc64-linux-gnu P{8,9}
> and powerpc64le-linux-gnu P10.
>
> Is it ok for trunk?
Looks good. Thanks!
Segher
