On 2014.10.21 at 13:53 -0700, Dehao Chen wrote:
> Everything will be the same on non-intel CPUs except for the perf command:
>
> perf record -e instructions -- your program.
>
> i.e. you need to drop "-b" and use instructions as event.
>
> Note that the current algorithm is tuned for accurate instruction
> level profile, which is not available on non-Intel CPU. But you are
> more than welcome to tune the propagation algorithm to get most out of
> inaccurate instruction profile.
Thanks.
But unfortunately it doesn't work:
markus@x4 autofdo % g++ -O2 -g /home/markus/bench.cpp
markus@x4 autofdo % perf record -e instructions ./a.out
...
markus@x4 autofdo % ./create_gcov --binary=a.out --profile=perf.data
--gcov=profile.afdo
E1021 23:23:30.733412 13689 perf_reader.cc:918] Unsupported event type 10
F1021 23:23:30.733707 13689 perf_parser.cc:114] Check failed:
ReadPerfSampleInfo(**parsed_events_[i].raw_event, &sample_info)
*** Check failure stack trace: ***
@ 0x44469d google::LogMessage::Flush()
@ 0x4470b9 google::LogMessageFatal::~LogMessageFatal()
@ 0x43c668 quipper::PerfParser::SortParsedEvents()
@ 0x43f0cb quipper::PerfParser::ParseRawEvents()
@ 0x4221ef autofdo::PerfDataSampleReader::Append()
@ 0x421af3 autofdo::SampleReader::ReadAndSetMaxCount()
@ 0x417e61 autofdo::ProfileCreator::ReadSample()
@ 0x418db2 autofdo::ProfileCreator::CreateProfile()
@ 0x4086a5 main
@ 0x7fa849ce8fd0 __libc_start_main
@ 0x4099cb (unknown)
@ (nil) (unknown)
[1] 13689 abort ./create_gcov --binary=a.out --profile=perf.data
--gcov=profile.afdo
--
Markus
