Return Styles: Pseud0ch, Terminal, Valhalla, NES, Geocities, Blue Moon. Entire thread

Branch Misses

Name: Anonymous 2011-09-26 17:26

How bad do branch misses hurt a programs performance? In C and Java?

for example how big of an impact would :


int shitinanus()
{
    int val = getanus();
    if(val != 0)
        return ANALTONIGHT;
    return ALONETONIGHT;
}

be knowing that val will most likely be 0 99% of the time compared to the below function


int shitinanus()
{
    int val = getanus();
    if(val == 0)
        return ALONETONIGHT;
    return ANALTONIGHT;
}

Name: Bishnu 2012-01-28 3:58

I am Bishnu, Hindian spawn of Yashavant Kanetkar. I tell you, all to use Turbo C and Let Us C!

Name: Anonymous 2012-01-28 6:09

>41
Could anyone answer this question for me?

Name: Anonymous 2012-01-30 0:03

Wormies in the brain!

Name: Anonymous 2012-01-30 0:03

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Name: Anonymous 2012-01-30 0:09

Wormies in the bum!

Name: Anonymous 2012-01-30 0:19

Boreland vs. ANSI
India vs. America
Yashavant Kanetkar vs. Grandma
16 bit vs. 32/64 bit

Conio Gains Turbo Trainers!

Name: Bonky The Koala 2012-01-30 0:30

Tehoo

Name: Anonymous 2012-01-30 1:10

>>6
Cortex-A9
toy CPUs
Go back to Yishrael, kike.

Name: Anonymous 2012-01-30 3:52

>>88
What's the matter? Your toy CPUs cannot carry out the same processing capability per clock. Only real chips have the balls to do the work.

Name: Anonymous 2012-01-30 6:16

Want to learn Punjabi? Simple! Sit on the floor poking at your poop all day and you'll learn.

Name: Anonymous 2012-01-30 8:09

>>89
>2012
>CISC

Name: Anonymous 2012-01-30 10:50

>>89
x86 was and still is a toy CPU

Name: Anonymous 2012-01-30 11:42

>>91,92
In the eyes of the Juden, insulting Intel's shit Jew chips makes you a naziwhowantstokillsixmillionjews.

Name: Anonymous 2012-01-30 11:47

>>92
lol it's the fastest today, eat dicks, faggot

Name: Anonymous 2012-01-30 11:49

>>94
Eat a Jew's circumcised cock, shabbos goy.

Name: Anonymous 2012-01-30 12:54

This thread is very good. I'm taking notes. Everybody read it!

Name: Anonymous 2012-01-30 22:51

>>1

probably only need to do this once you've -near- finished optimizing a performance-critical code =) and your ifis sitting in a big loop (/gets used a lot)

but yeah, it is faster to skip a branch rather than take it i think...

Name: Anonymous 2012-01-30 23:44

>>97
and your ifis sitting in a big loop
You mean a small loop - if it's a big loop, a smaller percentage of the time inside the loop is spent on the conditional.

=) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =) =)

Name: Anonymous 2012-01-31 1:50

>>98

small loop with lots of iter, yeh, u know what i ment anyway =D

Name: Anonymous 2012-01-31 1:56

I want to put my branch into a missus. One with a nice pair of double d dubs!

Name: Anonymous 2012-01-31 7:16

>>31

This is especially true to day, senior citizen. donkey.com.

Name: Anonymous 2012-01-31 10:22

Nutbags beware, you're in for a scare.

Name: Anonymous 2012-02-01 6:53

>>102

That includes the average 4chan wacko.

Name: Anonymous 2012-02-01 12:49

So, what do you all think of donkey.com?

Name: Anonymous 2012-02-02 5:04

4chan has wackos, the other "chan"s have crippled asian kids. donkey.com has donkeys.

Name: Anonymous 2012-02-02 6:32

Branch misses? More like toilet bowl misses.

Name: Anonymous 2012-02-03 6:59

Oops! I made weewee on the floor!

Name: Anonymous 2012-02-04 12:30

Wankee doodle went to town riding on a pony.

Name: Anonymous 2012-02-04 13:03

>>105
I've seen more creative coding done by the teenie weenies on Yahoo Checkers than I have seen done by the adult toilet scrubers here on /prog.

Name: Anonymous 2012-02-05 3:25

Put his willy in his hat and called it a macaroni.

Name: Anonymous 2012-02-05 3:49

Trips, Czech'em

Name: Anonymous 2012-02-07 4:15

Who is making fluffies?

Name: Anonymous 2012-02-07 4:24

>>1
That code is inappropriate. There are children that post on /prog/.

Name: Anonymous 2012-02-07 4:35

https://www.youtube.com/watch?v=hu5bLMAg9G0

Name: Anonymous 2012-02-10 5:09

DURRRR I MISSED THE TOILET BOWL AGAIN!

The Land of Lisp!

Name: Anonymous 2012-02-10 13:45

All over the floor too.

Name: Anonymous 2012-02-10 14:01

>>39
This is not related to branch misses at all. And seriously, which compiler are you using? Not optimizing such a trivial case?
>>4
loop stream detector
sounds interesting. but 16 bytes? how many instructions is that?

Name: Anonymous 2012-02-10 15:22

<--- check 'em

Name: Anonymous 2012-02-10 15:33

>>117
Probably the TrollSoft C/C++ de-optimizing compiler.

Name: Anonymous 2012-02-15 23:15

More like the Donkey.com wagon.
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