When the -count flag is provided,
instead of having each run overwrite the previous profile,
add a count suffix to the profile filename.
Then you can combine the profiles with
go tool pprof `go tool -n compile` <all profile files here>
This was done for CPU profiles in https://golang.org/cl/39718.
Change-Id: I4aa66d745fe18088655fc1d9cf3ecf29f68370bb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/166523
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
4ccd092f47