On Sat, 1 May 2021, Yakov wrote:
On this sample using macros speeds the program up 400%
Be that as it may, it's not representative of most application. For
instance, cpython's performance increases by only 10-15% with the inliner
turned on.
(And actually that's misleading, because
Well, I may take that back, recursion may be useful if you
have a 5000 loc function that you need to invoke
on some very rare occasion once. And if you care about
the size of your executable a lot for some reason.
But on hotpath, it makes no sense. Unless you are trying
to satisfy your academia,
Yakov wrote:
> Kyryl you cannot inline everything because you will get code
> explosion, often infinite code explosion when functions have a
> circular dependency on each other. I am just talking about inlining
> certain functions carefully chosen by a programmer.
Yeah, I get that. That's why
I have recently read a paper about a Linear Scan Register Allocator[1],
they claim it gives you 95% performance or Graph Coloring Register
Allocator in basically no time, and requires no SSA.
1. http://web.cs.ucla.edu/~palsberg/course/cs132/linearscan.pdf
сб, 1 мая 2021 г. в 10:51, Elijah
Saying that calls are cheap may be right for many cases but definitely not
for me, here is a tiny example I made by copying/pasting from my actual
project which is a compiler that uses TinyC as a backend. On this sample
using macros speeds the program up 400% i.e. 4 times on my AMD Ryzen5. In a
Kyryl you cannot inline everything because you will get code
explosion, often infinite code explosion when functions have a
circular dependency on each other. I am just talking about inlining
certain functions carefully chosen by a programmer.
сб, 1 мая 2021 г. в 11:13, Kyryl Melekhin :
>
>
Yakov wrote:
> Manual inlining seems to be a straightforward thing, just clone the
> node into the ast and rename all variables to something unique so I
> thought maybe that's what tcc supports with some pragma or what not.
If you create such a tool which can take any C code and straight up
On Sat, 1 May 2021, Yakov wrote:
having to write macros for performance feels so obsolete, double
evaluation hiding in dark corners etc. And function calls are so
expensive in tight loops.
Calls are fairly cheap, on modern architectures. The performance impact
of an inliner would be fairly
I know TinyC does not optimize (that's why it's fast and that's what I
love) but having to write macros for performance feels so obsolete,
double evaluation hiding in dark corners etc. And function calls are
so expensive in tight loops. Is there a way in Tiny to tell the
compiler always to inline
Also fixed on mob x86_64
tcc version 0.9.27 - 3564c47 (x86_64 Linux)
Conclusion, please take the mob
C.
-Original Message-
From: Tinycc-devel [mailto:tinycc-devel-bounces+eligis=orange...@nongnu.org] On
Behalf Of Christian Jullien
Sent: Friday, April 30, 2021 15:51
To:
FYI mod seems to be fixed (at least on RPi):
jullien@sims4:~ $ tcc foo.c -o foo && ./foo
Hello, world!
4.10, 1.10, 2.20, 3.30
-Original Message-
From: Tinycc-devel [mailto:tinycc-devel-bounces+eligis=orange...@nongnu.org]
On Behalf Of benja...@benjaminlipnik.eu
Sent: Friday, April 30,
Hi Ben,
It appears you're not using mod which now gives you the short hash git
revision something like:
tcc version 0.9.27 - 9b76a64 (ARM eabihf Linux)
It may or may not have been fixed.
Can you please check again with mob?
Tia.
C.
-Original Message-
From: Tinycc-devel
Hi!
I found an issue with the tcc compiler. Simple code snippet is in the
attachment.
I am running tcc version 0.9.27 (x86_64 Linux).
Regards, Ben#include
typedef struct {
float x,y,z;
}Vec3f;
void hello (float a, Vec3f b) {
printf("%.2f, %.2f, %.2f, %.2f\n", a, b.x, b.y, b.z);
}
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