[llvm-bugs] [Bug 39165] New: [llvm-exegesis] Bind PFM Counters to the CPUs instead of the SchedModel

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https://bugs.llvm.org/show_bug.cgi?id=39165

            Bug ID: 39165
           Summary: [llvm-exegesis] Bind PFM Counters to the CPUs instead
                    of the SchedModel
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Backend: X86
          Assignee: unassignedbugs at nondot.org
          Reporter: llvm-dev at redking.me.uk
                CC: andrea.dibiagio at gmail.com, clement.courbet at gmail.com,
                    craig.topper at gmail.com, gchatelet at google.com,
                    lebedev.ri at gmail.com, llvm-bugs at lists.llvm.org

As discussed on D52779, its probably a good idea to bind the PFM counters to
the CPUs instead of the SchedModel. 

Not only will this make it easier to reuse models where perf counters don't
match (e.g. bdver1/2 vs bdver3/4 and x86_64 generic) but it could make new
models easier to create - by allowing the cpu to initially just specify
cycle/uop counters.

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