cmd/bench: add -pgo flag
This change adds a flag to cmd/bench to do a few runs to collect
profiles and feed that back into the build before doing measured
benchmark runs.
This mode is only supported in Sweet to begin with.
Change-Id: I483ca5d5385b341dee4038641e16e02f2ce3493d
Reviewed-on: https://go-review.googlesource.com/c/benchmarks/+/594776
Auto-Submit: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
4 files changed
