[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

1 files changed, 7 insertions, 79 deletions

diff --git a/llvm/utils/TableGen/SubtargetEmitter.cpp b/llvm/utils/TableGen/SubtargetEmitter.cpp
index d1ea968590f..4ff52b3e44e 100644
--- a/llvm/utils/TableGen/SubtargetEmitter.cpp
+++ b/llvm/utils/TableGen/SubtargetEmitter.cpp
@@ -697,80 +697,12 @@ SubtargetEmitter::EmitRegisterFileTables(const CodeGenProcModel &ProcModel,
   return CostTblIndex;
 }
 
-static bool EmitPfmIssueCountersTable(const CodeGenProcModel &ProcModel,
-                                      raw_ostream &OS) {
-  unsigned NumCounterDefs = 1 + ProcModel.ProcResourceDefs.size();
-  std::vector<const Record *> CounterDefs(NumCounterDefs);
-  bool HasCounters = false;
-  for (const Record *CounterDef : ProcModel.PfmIssueCounterDefs) {
-    const Record *&CD = CounterDefs[ProcModel.getProcResourceIdx(
-        CounterDef->getValueAsDef("Resource"))];
-    if (CD) {
-      PrintFatalError(CounterDef->getLoc(),
-                      "multiple issue counters for " +
-                          CounterDef->getValueAsDef("Resource")->getName());
-    }
-    CD = CounterDef;
-    HasCounters = true;
-  }
-  if (!HasCounters) {
-    return false;
-  }
-  OS << "\nstatic const char* " << ProcModel.ModelName
-     << "PfmIssueCounters[] = {\n";
-  for (unsigned i = 0; i != NumCounterDefs; ++i) {
-    const Record *CounterDef = CounterDefs[i];
-    if (CounterDef) {
-      const auto PfmCounters = CounterDef->getValueAsListOfStrings("Counters");
-      if (PfmCounters.empty())
-        PrintFatalError(CounterDef->getLoc(), "empty counter list");
-      OS << "  \"" << PfmCounters[0];
-      for (unsigned p = 1, e = PfmCounters.size(); p != e; ++p)
-        OS << ",\" \"" << PfmCounters[p];
-      OS << "\",  // #" << i << " = ";
-      OS << CounterDef->getValueAsDef("Resource")->getName() << "\n";
-    } else {
-      OS << "  nullptr, // #" << i << "\n";
-    }
-  }
-  OS << "};\n";
-  return true;
-}
-
-static void EmitPfmCounters(const CodeGenProcModel &ProcModel,
-                            const bool HasPfmIssueCounters, raw_ostream &OS) {
-  OS << "  {\n";
-  // Emit the cycle counter.
-  if (ProcModel.PfmCycleCounterDef)
-    OS << "    \"" << ProcModel.PfmCycleCounterDef->getValueAsString("Counter")
-       << "\",  // Cycle counter.\n";
-  else
-    OS << "    nullptr,  // No cycle counter.\n";
-
-  // Emit the uops counter.
-  if (ProcModel.PfmUopsCounterDef)
-    OS << "    \"" << ProcModel.PfmUopsCounterDef->getValueAsString("Counter")
-       << "\",  // Uops counter.\n";
-  else
-    OS << "    nullptr,  // No uops counter.\n";
-
-  // Emit a reference to issue counters table.
-  if (HasPfmIssueCounters)
-    OS << "    " << ProcModel.ModelName << "PfmIssueCounters\n";
-  else
-    OS << "    nullptr  // No issue counters.\n";
-  OS << "  }\n";
-}
-
 void SubtargetEmitter::EmitExtraProcessorInfo(const CodeGenProcModel &ProcModel,
                                               raw_ostream &OS) {
   // Generate a table of register file descriptors (one entry per each user
   // defined register file), and a table of register costs.
   unsigned NumCostEntries = EmitRegisterFileTables(ProcModel, OS);
 
-  // Generate a table of ProcRes counter names.
-  const bool HasPfmIssueCounters = EmitPfmIssueCountersTable(ProcModel, OS);
-
   // Now generate a table for the extra processor info.
   OS << "\nstatic const llvm::MCExtraProcessorInfo " << ProcModel.ModelName
      << "ExtraInfo = {\n  ";
@@ -783,8 +715,6 @@ void SubtargetEmitter::EmitExtraProcessorInfo(const CodeGenProcModel &ProcModel,
   EmitRegisterFileInfo(ProcModel, ProcModel.RegisterFiles.size(),
                        NumCostEntries, OS);
 
-  EmitPfmCounters(ProcModel, HasPfmIssueCounters, OS);
-
   OS << "};\n";
 }
 
@@ -1410,7 +1340,7 @@ void SubtargetEmitter::EmitProcessorModels(raw_ostream &OS) {
 }
 
 //
-// EmitProcessorLookup - generate cpu name to itinerary lookup table.
+// EmitProcessorLookup - generate cpu name to sched model lookup tables.
 //
 void SubtargetEmitter::EmitProcessorLookup(raw_ostream &OS) {
   // Gather and sort processor information
@@ -1418,12 +1348,11 @@ void SubtargetEmitter::EmitProcessorLookup(raw_ostream &OS) {
                           Records.getAllDerivedDefinitions("Processor");
   llvm::sort(ProcessorList, LessRecordFieldName());
 
-  // Begin processor table
+  // Begin processor->sched model table
   OS << "\n";
-  OS << "// Sorted (by key) array of itineraries for CPU subtype.\n"
-     << "extern const llvm::SubtargetInfoKV "
-     << Target << "ProcSchedKV[] = {\n";
-
+  OS << "// Sorted (by key) array of sched model for CPU subtype.\n"
+     << "extern const llvm::SubtargetInfoKV " << Target
+     << "ProcSchedKV[] = {\n";
   // For each processor
   for (Record *Processor : ProcessorList) {
     StringRef Name = Processor->getValueAsString("Name");
@@ -1433,8 +1362,7 @@ void SubtargetEmitter::EmitProcessorLookup(raw_ostream &OS) {
     // Emit as { "cpu", procinit },
     OS << "  { \"" << Name << "\", (const void *)&" << ProcModelName << " },\n";
   }
-
-  // End processor table
+  // End processor->sched model table
   OS << "};\n";
 }
 
@@ -1675,7 +1603,7 @@ void SubtargetEmitter::EmitSchedModelHelpers(const std::string &ClassName,
 
   // Emit target predicates.
   emitSchedModelHelpersImpl(OS);
-  
+
   OS << "} // " << ClassName << "::resolveSchedClass\n\n";
 
   OS << "unsigned " << ClassName