Perf : put all the code in one source file only ?

[Alain Meunier]

Hello,

My question is purely theorical : what are the eventual disadvantages of putting a lot of functions in the same main.c file instead of spanning them into multiple static libraries ?

How will gcc sort this out ?

This question is neither related to maintainability, nor readability, nor executable size, nor ram usage.

Just performance.

Will the code units play a role or something ? Or whatever I don't think of ?

Will the perf will be the same ?

Thanks,

[Alain Meunier]

Thanks,

Why would I use flto with a single file at the first place ?

________________________________

Date: Sat, 2 Aug 2014 14:12:31 -0400
Subject: RE: Perf : put all the code in one source file only ?
Single file permits some auto inlining even without flto.
Tim Prince
-------- Original message --------
Subject: Perf : put all the code in one source file only ?
Hello,
My question is purely theorical : what are the eventual disadvantages
of putting a lot of functions in the same main.c file instead of
spanning them into multiple static libraries ?
How will gcc sort this out ?
This question is neither related to maintainability, nor readability,
nor executable size, nor ram usage.
Just performance.
Will the code units play a role or something ? Or whatever I don't think of ?
Will the perf will be the same ?
Thanks,