you need to index the libraries or something like that

#linux, what ide youre using?

i mostly use vscodium.com for advanced things or spacemacs/neovim for smaller or remote stuff but i consider qtcreator one of the most advanced environments ever used for c/cpp/qt/qml

#linux, what ide youre using?

Switch to Windows and use Visual Studio.

Hi, I have a compute intensive c program to optimize that I will probably end up compiling with -O3, but for optimizing it I need to read its assembly output, the problem is O3 assembly is difficult to read compared to say O1. Is it viable that optimizations made over O1 will translate over O3 just as good? Or will I be wasting time as O3 will probably already be optimizing those

Switch to Windows and use Visual Studio.

I hate the update system it wasting resources

Windows is awful

*was

people who criticize Windows or Visual Studio are living in the past.

first of all, why do you need an alternative? maybe we can suggest you something better if we understand what "better" means for you and your use cases

VS is slow and bulky

It is

depends on your hardware

VS is slow and bulky

I stopped using windows in 2012 and moved to Mac/Linux lol

usually the compiler knows better than you how to optimize things (i said usually) try to embed the proper intrinsics and optimizations on O1, port them in your code, re-compile it with O3 and see what happens just please make sure to optimize only task intensive things without destroying the actual structure flow of the program, or the compiler optimizations may give you some unwanted surprises

it has been 8 years bro. i said that.

So it would be better not to use O3 but the explicit flags, seems reasonable :p

So it would be better not to use O3 but the explicit flags, seems reasonable :p

i continue to lurk at it regularly on every new release

You can use O3, but always test and measure. That way you'll get the most out of your CPU

On the ide wars, I just would like to point out that you can’t use visual studio without a Microsoft account, it doesnt have proper multicursor support, it is so bloated that it installs an installer that in turns installs the ide, its size is at least five times other editors, the integration with git is pretty Bad compared to atom or vscode, and those are just some of the thing that make me avoid visual studio

My main concern is doing work that will be done already by O3

it does not force you to update. other lightweight IDEs are good, too. but, VS is worthy.

Don't be. Just think that the compiler is smart enough to, for example, turn a *= 2; into a <<= 1;. And that is pretty easy, but there're really crazy optimizations a compiler can do and almost no human could

Just focus on the algorithmic complexity and and write clear code you can understand later

My main task is to optimize the program like this, not algorithmically. For example, O3 didnt recognize that a nested for loop was being traversed by column instead of by row thus generating lots of cache misses

Hey guys

Hey

I am new there buddy

Welcome ^^

Look into basics of cryptography and chose the algorithm that suits your need

My main task is to optimize the program like this, not algorithmically. For example, O3 didnt recognize that a nested for loop was being traversed by column instead of by row thus generating lots of cache misses

Never use -O3 unless you are a compiler developer. Default optimization in POSIX is -O1; however -O2 is the widest used optimization flag, so it must be the most reliable too

Never use -O3 unless you are a compiler developer. Default optimization in POSIX is -O1; however -O2 is the widest used optimization flag, so it must be the most reliable too

I kind of disagree. If your tests still pass and the program is faster, I see no problem

it is more exprimental, unreliable, buggy, and should not be used in development

I recently started learning c++(my first language), this puzzle is easy to solve on human logic, was wondering how a program would look like to solve this(I'm a newbie, couldn't figure it out)

I recently started learning c++(my first language), this puzzle is easy to solve on human logic, was wondering how a program would look like to solve this(I'm a newbie, couldn't figure it out)

It is not programming

You learned C++ or you started learning C++?

Yeah, I know, I asked it to understand a possible computer logic for this

No "computer logic" here Just human one

He asked for an algorithm to solve that.