On Sat, Jul 9, 2022 at 8:59 AM Jeff Law via Gcc-patches
wrote:
>
>
>
> On 6/21/2022 12:12 PM, Noah Goldstein via Gcc-patches wrote:
> > This patch allows for strchr(x, c) to the replace with memchr(x, c,
> > strlen(x) + 1) if strlen(x) has already been computed
On Tue, Jun 21, 2022 at 11:13 AM Noah Goldstein wrote:
>
> On Tue, Jun 21, 2022 at 5:01 AM Jakub Jelinek wrote:
> >
> > On Mon, Jun 20, 2022 at 02:42:20PM -0700, Noah Goldstein wrote:
> > > This patch allows for strchr(x, c) to the replace with memchr(x, c,
> > > strlen(x) + 1) if strlen(x) has a
On Tue, Jun 21, 2022 at 5:01 AM Jakub Jelinek wrote:
>
> On Mon, Jun 20, 2022 at 02:42:20PM -0700, Noah Goldstein wrote:
> > This patch allows for strchr(x, c) to the replace with memchr(x, c,
> > strlen(x) + 1) if strlen(x) has already been computed earlier in the
> > tree.
> >
> > Handles PR9582
This patch allows for strchr(x, c) to the replace with memchr(x, c,
strlen(x) + 1) if strlen(x) has already been computed earlier in the
tree.
Handles PR95821: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95821
Since memchr doesn't need to re-find the null terminator it is faster
than strchr.
bo
This patch allows for strchr(x, c) to the replace with memchr(x, c,
strlen(x) + 1) if strlen(x) has already been computed earlier in the
tree.
Handles PR95821: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95821
Since memchr doesn't need to re-find the null terminator it is faster
than strchr.
bo
On Mon, Jun 20, 2022 at 10:29 AM Jakub Jelinek wrote:
>
> On Mon, Jun 20, 2022 at 09:35:36AM -0700, Noah Goldstein via Gcc-patches
> wrote:
> > This patch allows for strchr(x, c) to the replace with memchr(x, c,
> > strlen(x) + 1) if strlen(x) has already been computed ea
On Mon, Jun 20, 2022 at 12:04 PM Jakub Jelinek wrote:
>
> On Mon, Jun 20, 2022 at 11:48:24AM -0700, Noah Goldstein wrote:
> > > I think we should differentiate more. If integer_nonzerop (chr)
> > > or perhaps better tree_expr_nonzero_p (chr), then it is better
> > > to optimize t = strlen (x); ..
On Mon, Jun 20, 2022 at 10:29 AM Jakub Jelinek wrote:
>
> On Mon, Jun 20, 2022 at 09:35:36AM -0700, Noah Goldstein via Gcc-patches
> wrote:
> > This patch allows for strchr(x, c) to the replace with memchr(x, c,
> > strlen(x) + 1) if strlen(x) has already been computed ea
This patch allows for strchr(x, c) to the replace with memchr(x, c,
strlen(x) + 1) if strlen(x) has already been computed earlier in the
tree.
Handles PR95821: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95821
Since memchr doesn't need to re-find the null terminator it is faster
than strchr.
bo
On Fri, Jul 16, 2021 at 3:37 PM Matthias Kretz wrote:
> On Friday, 16 July 2021 19:20:29 CEST Noah Goldstein wrote:
> > On Fri, Jul 16, 2021 at 11:12 AM Matthias Kretz wrote:
> > > I don't understand how this feature would lead to false sharing. But
> maybe
> > > I
> > > misunderstand the spatia
On Fri, Jul 16, 2021 at 11:12 AM Matthias Kretz wrote:
> On Friday, 16 July 2021 04:41:17 CEST Jason Merrill via Gcc-patches wrote:
> > > Currently the patch does not adjust the values based on -march, as in
> JF's
> > > proposal. I'll need more guidance from the ARM/AArch64 maintainers
> about
On Thu, Jul 15, 2021 at 10:41 PM Jason Merrill via Gcc-patches <
gcc-patches@gcc.gnu.org> wrote:
> Adding CCs that got lost in the initial mail.
>
> On Thu, Jul 15, 2021 at 10:36 PM Jason Merrill wrote:
>
> > The last missing piece of the C++17 standard library is the hardware
> > intereference s
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