Hello Elijah !
I searched the mailing list and found this one
https://lists.nongnu.org/archive/html/tinycc-devel/2013-10/msg00013.html
that seems to be the one you describe.
Cheers !
On 4/4/22 20:04, Elijah Stone wrote:
A while ago, somebody worked on improving the quality of tcc's code
generation. Apparently the resulting code performed similarly to gcc
-O0. This was specific to the (32-bit) x86 backend, but feasible to
port to others. I don't have a pointer handy, but you should be able
to find it by searching the mailing list archives.
On Mon, 4 Apr 2022, Domingo Alvarez Duarte wrote:
Hello Brian !
I understand what you are saying and based on that TCC basically
doesn't do basically any optmization and based on the basic idea of
search/look through the generated assembly (trough objdump) trying
recognize easy hanging fruits and if finding any and localizing the
generating point add a similar code to the one you described to alter
the generated code instead of modify/replace/remove the already
generated one.
Thank you so much for your nice and useful blog post !
Cheers !
On 4/4/22 18:15, Brian Callahan wrote:
Hello --
I am on this list, you know :)
There may well be opportunities in tcc for a peephole optimizer
approach, but I'll caution that each compiler is different and that
blog
post was examining QBE, so it wouldn't necessarily be a direct 1:1
mapping. QBE does a lot of optimization itself before writing out its
final assembly.
~Brian
On 4/4/2022 10:26 AM, Domingo Alvarez Duarte wrote:
After reading this https://briancallahan.net/blog/20220330.html and
using a citation on this list about dumping the ASM generated by TCC
using objdump maybe we can find patterns on the generated code and
identify where it's produced and update then.
On 31/3/22 20:16, rempas via Tinycc-devel wrote:
31 Μαρ 2022, 19:35 Από david.k...@libertysurf.fr:
Have a look : https://github.com/adorad/tcc and
https://github.com/adorad/adorad
----- Mail d'origine -----
De: rempas via Tinycc-devel <tinycc-devel@nongnu.org>
À: Tinycc Devel <tinycc-devel@nongnu.org>
Cc: rem...@tutanota.com, Tinycc Devel <tinycc-devel@nongnu.org>
Envoyé: Tue, 29 Mar 2022 21:12:37 +0200 (CEST)
Objet: Re: [Tinycc-devel] Re : Some questions regarding of TCC's
optimizations.
Thanks a lot! I will look at it!
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