[Bug gcov-profile/95348] GCC records zero functions and modules in the profiling data file, ICC does NOT
marxin at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Wed Jun 24 09:06:59 GMT 2020
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95348
--- Comment #41 from Martin Liška <marxin at gcc dot gnu.org> ---
The patch survives PGO bootstrap of GCC and it shrinks size of gcda
file from 17MB to 12MB.
And compression can achieve the following:
zstd: 3.3 MB
$ time zstd *
real 0m0.082s
user 0m0.068s
sys 0m0.013s
gzip: 3.3 MB
$ time gzip *
real 0m0.357s
user 0m0.328s
sys 0m0.029s
So using compression is a very promising approach.
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