Em dom., 19 de abr. de 2020 às 22:00, David Rowley
escreveu:
> On Mon, 20 Apr 2020 at 11:24, Ranier Vilela wrote:
> > I tried: https://godbolt.org with:
> >
> > -O2:
> >
> > f1:
> > int main (int argv, char **argc)
> > {
> > return strlen(argc[0]) == 0;
> > }
> >
> > f1: Assembly
> > main:
On Mon, 20 Apr 2020 at 11:24, Ranier Vilela wrote:
> I tried: https://godbolt.org with:
>
> -O2:
>
> f1:
> int main (int argv, char **argc)
> {
> return strlen(argc[0]) == 0;
> }
>
> f1: Assembly
> main: # @main
> mov rcx, qword ptr [rsi]
>
Em dom., 19 de abr. de 2020 às 18:38, Tom Lane escreveu:
> Tomas Vondra writes:
> > On Sun, Apr 19, 2020 at 11:24:38AM -0300, Ranier Vilela wrote:
> >> strlen it is one of the low fruits that can be harvested.
>
> > Maybe there are places where this would help, but I don't see a reason
> > to ju
Em dom., 19 de abr. de 2020 às 19:00, David Rowley
escreveu:
> On Mon, 20 Apr 2020 at 09:38, Tom Lane wrote:
> > The cases where Ranier proposes to replace strlen(foo) == 0
> > with a test on foo[0] do seem like wins, though. Asking for
> > the full string length to be computed is more computat
On Mon, 20 Apr 2020 at 09:38, Tom Lane wrote:
> The cases where Ranier proposes to replace strlen(foo) == 0
> with a test on foo[0] do seem like wins, though. Asking for
> the full string length to be computed is more computation than
> necessary, and it's less clear that the compiler could be
>
Tomas Vondra writes:
> On Sun, Apr 19, 2020 at 11:24:38AM -0300, Ranier Vilela wrote:
>> strlen it is one of the low fruits that can be harvested.
> Maybe there are places where this would help, but I don't see a reason
> to just throw away all strlen calls and replace them with something
> clear
On 4/19/20 10:29 PM, Ranier Vilela wrote:
Em dom., 19 de abr. de 2020 às 16:33, Tomas Vondra
mailto:tomas.von...@2ndquadrant.com>>
escreveu:
On Sun, Apr 19, 2020 at 11:24:38AM -0300, Ranier Vilela wrote:
>Hi,
>strlen it is one of the low fruits that can be harvested.
>What i
On Sun, Apr 19, 2020 at 05:29:52PM -0300, Ranier Vilela wrote:
Em dom., 19 de abr. de 2020 às 16:33, Tomas Vondra <
tomas.von...@2ndquadrant.com> escreveu:
On Sun, Apr 19, 2020 at 11:24:38AM -0300, Ranier Vilela wrote:
>Hi,
>strlen it is one of the low fruits that can be harvested.
>What is you
Em dom., 19 de abr. de 2020 às 16:33, Tomas Vondra <
tomas.von...@2ndquadrant.com> escreveu:
> On Sun, Apr 19, 2020 at 11:24:38AM -0300, Ranier Vilela wrote:
> >Hi,
> >strlen it is one of the low fruits that can be harvested.
> >What is your opinion?
> >
>
> That assumes this actually affects/impr
On Sun, Apr 19, 2020 at 11:24:38AM -0300, Ranier Vilela wrote:
Hi,
strlen it is one of the low fruits that can be harvested.
What is your opinion?
That assumes this actually affects/improves performance, without any
measurements proving that. Considering large number of the places you
modified
Hi,
strlen it is one of the low fruits that can be harvested.
What is your opinion?
regards,
Ranier Vilela
remove_strlen.patch
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