[llvm-bugs] [Bug 37176] New: [llvm-exegesis] Improve unit tests running on the build bots

via llvm-bugs llvm-bugs at lists.llvm.org
Thu Apr 19 04:09:15 PDT 2018


            Bug ID: 37176
           Summary: [llvm-exegesis] Improve unit tests running on the
                    build bots
           Product: new-bugs
           Version: unspecified
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: llvm-dev at redking.me.uk
                CC: andrea.dibiagio at gmail.com, clement.courbet at gmail.com,
                    filcab at gmail.com, gchatelet at google.com,
                    gkistanova at gmail.com, greg.bedwell at sony.com,
                    llvm-bugs at lists.llvm.org

We need at least some llvm-exegesis testing on the buildbots, for that we need
buildbots running a suitable version of perfmon2/libpfm4 and a suitable
supported cpu. I believe there may be issues with buildbots running in a vm not
correctly reporting pmc values as well.

The unit tests will then need a cpuid mechanism to correctly attempt at least
to match a few basic instructions against expected latency/uop counts.

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