On Tue, Jul 15, 2014 at 2:33 PM, Bernd Schmidt <bernds_...@t-online.de> wrote:
> On 02/28/2014 11:48 PM, Marc Glisse wrote:
>>
>> /* Optimize
>> + ptr = malloc (n);
>> + memset (ptr, 0, n);
>> + into
>> + ptr = calloc (n);
>> + gsi_p is known to point to a call to __builtin_memset. */
>
>
> Is there anything in here to prevent us making an infinite loop if the above
> pattern occurs in a function called "calloc"?
Nothing. See how I ended up doing
2014-05-06 Richard Biener <rguent...@suse.de>
* c-opts.c (c_common_post_options): For -freestanding,
-fno-hosted and -fno-builtin disable pattern recognition
if not enabled explicitely.
to avoid sth like this for memset/memcpy/memmove recognition.
Richard.
>
> Bernd
>
