On Sat, Dec 2, 2023 at 7:38 AM Andrew Pinski <quic_apin...@quicinc.com> wrote:
>
> While working on PR 111972, I was getting a regression
> due to zero_one_valued_p matching a signed 1 bit integer
> when it came to convert. This patch fixes that by checking
> the outer type too.
>
> Bootstrapped and tested on x86_64-linux-gnu with no regressions.
OK
> gcc/ChangeLog:
>
> * match.pd (zero_one_valued_p): For convert
> make sure type is not a signed 1-bit integer.
>
> Signed-off-by: Andrew Pinski <quic_apin...@quicinc.com>
> ---
> gcc/match.pd | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/gcc/match.pd b/gcc/match.pd
> index 26383e55767..4d554ba4721 100644
> --- a/gcc/match.pd
> +++ b/gcc/match.pd
> @@ -2247,6 +2247,9 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT)
> (if (INTEGRAL_TYPE_P (TREE_TYPE (@1))
> && (TYPE_UNSIGNED (TREE_TYPE (@1))
> || TYPE_PRECISION (TREE_TYPE (@1)) > 1)
> + && INTEGRAL_TYPE_P (type)
> + && (TYPE_UNSIGNED (type)
> + || TYPE_PRECISION (type) > 1)
> && wi::leu_p (tree_nonzero_bits (@1), 1))))
>
> /* Transform { 0 or 1 } * { 0 or 1 } into { 0 or 1 } & { 0 or 1 }. */
> --
> 2.39.3
>
