Thank you for feedback. I understand what are the limits of tcc. In my specific
problem, I am trying to speed up user-provided expression in a simulation of
100 paths. Can I use the avx512 build-in - e.g. work on 8 double precision
values with one operation - practically reducing the 100 evaluat
On Sat, 5 Feb 2022, Samir Ribić via Tinycc-devel wrote:
However, it is possible at library level. Simply write matrix
manipulations functions in assembly language. Inside functions load
data into AVX registers, do calculations in registers and at exit write
the result into memory.
I think
Single pass compilers still can have peephole optimization. Once I
demonstrated with situations when tcc generates
MOV EAX,const
MOV [location],EAX
and catched this case to generate
MOV DWORD [location],const
Back to the topic, AVX-512 is difficult to be supported at language level.
In the case of
An optimizer compiler need several pass to operate.
- constant folding
- register allocation
- peephole optimization
- branch prediction
...
When it knows the target it can reorganize code to keep as much as possible
data un L1 cache and have the longest series of instructions that can be
execut
5 Φεβ 2022, 11:01 Από eli...@orange.fr:
> The price to pay its really fast compilation is that the generated code is
> poor compared to gcc, clang or vc++ (among others). Depending on your
> program, consider it is roughly 2 to 4x slower.
>
I would say that this is not always the case. And corre
Hi, I speak only for myself.
I'm not sure tcc is the right target for you.
We all loved to have tcc generating fast code but the two main goals of tcc are
C compliance and FAST compilation code.
The price to pay its really fast compilation is that the generated code is poor
compared to gcc, clang
I have a project which is running a user simulation - time consuming - user
defined code. I hope that performance can be improved using SIMD instructions.
What is the optimization level supported by libtcc ? Can it generate optimized
code for AVX512 ? See 4.x. Documentation indicate optimization
