Re: C23 thoughts and opinions

On Sun, 26 May 2024 19:01:21 +0100
bart <bc@freeuk.com> wrote:

On 26/05/2024 17:35, Michael S wrote:

On Sun, 26 May 2024 16:25:51 +0100
bart <bc@freeuk.com> wrote:
 
 

>
Back to the 5MB test:
>
    Tiny C     1.7s    2.9MB/sec (Tcc doesn't use any IR)
>
    mcc        3.7s    1.3MB/sec (my product; uses intermediate
ASM) 

 
Faster than new MSVC, but slower than old MSVC. 

 
My mcc is never going to be fast, because it uses ASM, which itself
will generate a text file several times larger than the C (so the
line "123," in C ends up as "   db    123" in the ASM file).
>

Generation of asm at 7-8 MB/s sounds feasible even on slow computer.
And once you have asm in right format, 'gnu as' processes it quite fast.
On faster computer I had seen ~30  MB/s. I'd guess the slower one
should be able to do it at 15 MB/s. So, generation+assembling together
could run at ~5 MB/s. The trick here is to use format that 'gnu as' was
optimized for. To know what it is, look at the output of gcc -S.