Hello all,
Shivansh Khare wrote:
I have looked into the different starter projects that are offered in the
[Wiki GSoC page](https://gcc.gnu.org/wiki/SummerOfCode) and I was
particularly interested in the `-ftime-trace` project. The following is
what is given as a short description about the problematic:
"Implement something similar to Clang's -ftime-trace feature which
generates performance reports that show where the compiler spends compile
time. For more information, please check the following blog post.
Are you aware of the existing -ftime-report option to GCC 12 or later?
On Linux (and probably many other POSIX) systems, at least in straight
(non-cross) x86-64 GCC compilers, implementing that should be not very
difficult. Here are some insights.
Read carefully https://man7.org/linux/man-pages/man7/time.7.html
First, you could experiment by writing a GCC plugin doing that timing
(in some experimental way).
https://gcc.gnu.org/onlinedocs/gccint/Plugins.html
Maybe consider later providing such a "standard" GCC plugin to do the
timing.
Modifying the pass manager
https://gcc.gnu.org/onlinedocs/gccint/Pass-manager.html#Pass-manager to
use clock_gettime system call. See
https://man7.org/linux/man-pages/man2/clock_gettime.2.html
It is related to plugin gate functions...
Regards.
BTW, my pet open source project is http://refpersys.org/ (symbolic
inference engine, work in progress).
--
Basile Starynkevitch <bas...@starynkevitch.net>
(only mine opinions / les opinions sont miennes uniquement)
92340 Bourg-la-Reine, France
web page: starynkevitch.net/Basile/
