[MCSched] Bind PFM Counters to the CPUs instead of the SchedModel.

Summary:
The pfm counters are now in the ExegesisTarget rather than the
MCSchedModel (PR39165).

This also compresses the pfm counter tables (PR37068).

Reviewers: RKSimon, gchatelet

Subscribers: mgrang, llvm-commits

Differential Revision: https://reviews.llvm.org/D52932

llvm-svn: 345243
diff --git a/llvm/tools/llvm-exegesis/lib/AArch64/Target.cpp b/llvm/tools/llvm-exegesis/lib/AArch64/Target.cpp
index be8f0b4..0197420 100644
--- a/llvm/tools/llvm-exegesis/lib/AArch64/Target.cpp
+++ b/llvm/tools/llvm-exegesis/lib/AArch64/Target.cpp
@@ -53,6 +53,10 @@
 } // namespace
 
 class ExegesisAArch64Target : public ExegesisTarget {
+public:
+  ExegesisAArch64Target() : ExegesisTarget({}) {}
+
+private:
   std::vector<llvm::MCInst> setRegTo(const llvm::MCSubtargetInfo &STI,
                                      unsigned Reg,
                                      const llvm::APInt &Value) const override {