On Wed, 20 Jan 2021, Richard Sandiford wrote:
> Richard Biener writes:
> > diff --git a/gcc/hwint.h b/gcc/hwint.h
> > index 127b0130c66..8812bc7150f 100644
> > --- a/gcc/hwint.h
> > +++ b/gcc/hwint.h
> > @@ -333,4 +333,46 @@ absu_hwi (HOST_WIDE_INT x)
> >return x >= 0 ? (unsigned HOST_WIDE_IN
Richard Biener writes:
> diff --git a/gcc/hwint.h b/gcc/hwint.h
> index 127b0130c66..8812bc7150f 100644
> --- a/gcc/hwint.h
> +++ b/gcc/hwint.h
> @@ -333,4 +333,46 @@ absu_hwi (HOST_WIDE_INT x)
>return x >= 0 ? (unsigned HOST_WIDE_INT)x : -(unsigned HOST_WIDE_INT)x;
> }
>
> +/* Compute the
On Wed, 20 Jan 2021, Richard Biener wrote:
> On Wed, 20 Jan 2021, Jakub Jelinek wrote:
>
> > On Wed, Jan 20, 2021 at 01:15:12PM +0100, Richard Biener wrote:
> > > OK, fixed. Guess we could also use __builtin_mul_overflow directly
> > > if supported via a GCC_VERSION check. Looks like it's prese
On Wed, 20 Jan 2021, Jakub Jelinek wrote:
> On Wed, Jan 20, 2021 at 01:15:12PM +0100, Richard Biener wrote:
> > OK, fixed. Guess we could also use __builtin_mul_overflow directly
> > if supported via a GCC_VERSION check. Looks like it's present
> > since GCC 5 at least. So sth like (incremental
On Wed, Jan 20, 2021 at 01:15:12PM +0100, Richard Biener wrote:
> OK, fixed. Guess we could also use __builtin_mul_overflow directly
> if supported via a GCC_VERSION check. Looks like it's present
> since GCC 5 at least. So sth like (incremental)
>
> diff --git a/gcc/hwint.h b/gcc/hwint.h
> ind
On Wed, 20 Jan 2021, Jakub Jelinek wrote:
> On Wed, Jan 20, 2021 at 12:29:23PM +0100, Richard Biener wrote:
> > +/* Compute the product of signed A and B and indicate in *OVERFLOW whether
> > + that operation overflowed. */
> > +
> > +inline HOST_WIDE_INT
> > +mul_hwi (HOST_WIDE_INT a, HOST_WID
On Wed, Jan 20, 2021 at 12:29:23PM +0100, Richard Biener wrote:
> +/* Compute the product of signed A and B and indicate in *OVERFLOW whether
> + that operation overflowed. */
> +
> +inline HOST_WIDE_INT
> +mul_hwi (HOST_WIDE_INT a, HOST_WIDE_INT b, bool *overflow)
> +{
> + unsigned HOST_WIDE_I
