On 11/08/2014 09:55 PM, Emil Velikov wrote:
A comment I could not withheld based on your earlier post - "We require
micro-benchmark for this code. It will take me hours to find why mesa is
so slow now :P"
Which brings the question why didn't you post to that thread/topic in
first place instead :P
Ideally mesa should have an infrastructure/farm that handles regressions
- be that performance or otherwise. Pretty sure some companies have such
features but those seem to be hidden behind locked doors :'(
Yes, that's unfortunate. But atleast we have Phoronix :)
Can you confirm that it does not cause issues with "interesting" setups
such as https://bugs.freedesktop.org/show_bug.cgi?id=71547
Challenge accepted! What my patch is doing is to check for provided
compile flags (-msse, ...) on compile time (__SSE__, ...) and set
"cpu_has_sse" macro to "1" which allows any sane compiler to turn this
pieces of code:
#ifdef USE_SSE
if (cpu_has_sse)
{
/* SSE code path */
}
else
#endif
{
/* C fallback */
}
into this:
/* SSE code path */
by using compile time information by target CPU.
Best regards,
Siavash Eliasi.
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