Displaying 4 results from an estimated 4 matches for "fff3".
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2018 Apr 20
2
Missed strlen optimizations
Hello,
Code: https://godbolt.org/g/EG4Wi6
unsigned fff3(void) {
char buf[10] = "";
return strlen(buf);
}
Since we are memset-ing before strlen call, we could replace strlen with
just 0.
Has LLVM any API to get "last instruction before strlen" which modifies
strlen argument "buf"? So we can check "yes, it is m...
2018 Apr 20
2
Missed strlen optimizations
...solution?
2018-04-20 19:19 GMT+02:00 Dávid Bolvanský <david.bolvansky at gmail.com>:
> Is:
>
>
> 2018-04-20 18:07 GMT+02:00 Dávid Bolvanský <david.bolvansky at gmail.com>:
>
>> Hello,
>>
>> Code: https://godbolt.org/g/EG4Wi6
>>
>> unsigned fff3(void) {
>> char buf[10] = "";
>> return strlen(buf);
>> }
>>
>> Since we are memset-ing before strlen call, we could replace strlen with
>> just 0.
>>
>> Has LLVM any API to get "last instruction before strlen" which modifi...
2018 Apr 20
0
Missed strlen optimizations
Is:
2018-04-20 18:07 GMT+02:00 Dávid Bolvanský <david.bolvansky at gmail.com>:
> Hello,
>
> Code: https://godbolt.org/g/EG4Wi6
>
> unsigned fff3(void) {
> char buf[10] = "";
> return strlen(buf);
> }
>
> Since we are memset-ing before strlen call, we could replace strlen with
> just 0.
>
> Has LLVM any API to get "last instruction before strlen" which modifies
> strlen argument "bu...
2018 Apr 20
0
Missed strlen optimizations
...Bolvanský <david.bolvansky at gmail.com>:
>
>> Is:
>>
>>
>> 2018-04-20 18:07 GMT+02:00 Dávid Bolvanský <david.bolvansky at gmail.com>:
>>
>>> Hello,
>>>
>>> Code: https://godbolt.org/g/EG4Wi6
>>>
>>> unsigned fff3(void) {
>>> char buf[10] = "";
>>> return strlen(buf);
>>> }
>>>
>>> Since we are memset-ing before strlen call, we could replace strlen with
>>> just 0.
>>>
>>> Has LLVM any API to get "last instruction...