Lec 1 | MIT 6.035 Computer Language Engineering, Fall 2005

[zecadojuneca]

OCW is one great initiative. Thanks, MIT.

[blackcompe]

But of course, a robust compiler won't have that kind of intuition

[blackcompe]

You can further optimize his code by using Faulhaber's formula (sum of pyramidal squares) to replace t*t in the loop.

[thevishy]

Instructor is Saman Amarasinghe

/people.csail.mit.edu/saman/

[TheUberphil]

0:20 - "this last shit i give at the end of class"

17:28 - "so, what da hell we do?"

i think this guy is just trying to sneak words in.

[vamsi108]

@TheUberphil

this last sheet.........

[nychold]

@TheUberphil My linear algebra teacher used to come into the room and ask "So how are you fuckers doing today?" College is a great place sometimes. :)

[corpmedia]

I cant even understand what hes saying!

[alexanderssson]

What what was at 9:32 ???

[all028]

One thing I've always wanted to learn is how to write a compiler. It was one regret that I have for not learning it in school. (I was a lazy student). Now that I'm working, I never have time.

Thank you for posting this...

[vaf88]

@all028 read the "dragon book" and use the net to help you

[MarijnStevens]

@vaf88 expensive; dry but worth it (Y)

[tradingpilot]

@all028 This is my exact problem! If I could of gone back in time I would of done computer science or electrical engineering!

[all028]

@tradingpilot - What did you take instead? I found computer science to be hard at the time but now, in retrospect, I actually like programming!

[marlls1989]

@all028 Last semester I took a compiler class in my universaty. The assignment was to build a bc-alike calculator. But I asked the professor to write something more challenging, then I wrote a LLVM based C-alike compiler, that I am currentlly planning to extend it to include untyped lambda expressions.

It is not that hard, just grab FLEX and Bison, and in a week or so you might end up with something you might call a compiler

[nmania03]

can any body tell what TA means?

[VelikiBedak]

teaching assistant

[Gearhe1d]

Teacher Assistant.

[zndr27]

@nmania03 teaching assistant

[ludwigious]

Did anyone else do the optimization challenge?

I got this (i did it before i saw his optimization, but of course i took longer than 4 minutes)

int i,x,y,u;

x=0;

y=0;

u = (4*a/b) +2

for (i=0; i <= N; i++)

{ x = x + i*i + i*u + 1; }

return x; After seeing his optimization, I realized I shouldn't rely on algebra to do things like this. The compiler would be really complicated if it started doing all sorts of algebra.

[darijo203]

Ignore first 17 minutes.

[VelikiBedak]

Thank, you saved me 17 min. I owe you.:-)

[bluekads]

"removed due to copyright concerns"

What does that mean !!!!!!!!!!!!!

[ANet64]

Probably some image or diagram that was being displayed in the slideshow

[chaz2290]

It's a bit obvious isn't it? You would think someone interested in something like this would have half a brain.

[yikyikyik]

LOL== removec due to copyright concerns==