Etienne Perot 3f0c7ccf85 PGO: Add make target to refresh profiles for PGO. ...

This runs all benchmarks tagged as PGO-enabled, of which there is
currently just one for simplicity (the ffmpeg benchmark). All other
benchmarks are initially tagged out of PGO. I will send a different
change to enroll other benchmarks in PGO.

The make target runs each such benchmark and gathers profiles for each
benchmark. Multiple profile files for multiple runs of the same benchmark
are merged into one, then compared against the existing checked-in profile
used for PGO builds (which right now doesn't exist). If such a profile
doesn't exist or differs widely from the freshly-collected profile, then
this new profile is copied into the repository.

Such profiles are not used at all in builds yet, this is just the glue
that keeps them fresh in the repo.

PiperOrigin-RevId: 714311978

2025-01-10 19:44:15 -08:00

..

BUILD

Create tool to merge profiles together and compact them.

2024-07-01 15:01:17 -07:00

profiletool.go

PGO: Add make target to refresh profiles for PGO.

2025-01-10 19:44:15 -08:00