misched: Added MultiIssueItineraries.
This allows a subtarget to explicitly specify the issue width and
other properties without providing pipeline stage details for every
instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157979 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/SubtargetEmitter.cpp b/utils/TableGen/SubtargetEmitter.cpp
index 986c50f..764fc88 100644
--- a/utils/TableGen/SubtargetEmitter.cpp
+++ b/utils/TableGen/SubtargetEmitter.cpp
@@ -478,6 +478,17 @@
OS << BypassTable;
}
+void SubtargetEmitter::EmitItineraryProp(raw_ostream &OS, const Record *R,
+ const char *Name, char Separator) {
+ OS << " ";
+ int V = R->getValueAsInt(Name);
+ if (V >= 0)
+ OS << V << Separator << " // " << Name;
+ else
+ OS << "DefaultItineraryProps." << Name << Separator;
+ OS << '\n';
+}
+
//
// EmitProcessorData - Generate data for processor itineraries.
//
@@ -485,6 +496,8 @@
EmitProcessorData(raw_ostream &OS,
std::vector<Record*> &ItinClassList,
std::vector<std::vector<InstrItinerary> > &ProcList) {
+ OS << "static const llvm::InstrItineraryProps " << "DefaultItineraryProps;";
+
// Get an iterator for processor itinerary stages
std::vector<std::vector<InstrItinerary> >::iterator
ProcListIter = ProcList.begin();
@@ -502,9 +515,19 @@
// Skip default
if (Name == "NoItineraries") continue;
+ // Begin processor itinerary properties
+ OS << "\n";
+ OS << "static const llvm::InstrItineraryProps " << Name << "Props(\n";
+ EmitItineraryProp(OS, Itin, "IssueWidth", ',');
+ EmitItineraryProp(OS, Itin, "MinLatency", ',');
+ EmitItineraryProp(OS, Itin, "LoadLatency", ',');
+ EmitItineraryProp(OS, Itin, "HighLatency", ' ');
+ OS << ");\n";
+
// Begin processor itinerary table
OS << "\n";
- OS << "static const llvm::InstrItinerary " << Name << "[] = {\n";
+ OS << "static const llvm::InstrItinerary " << Name << "Entries"
+ << "[] = {\n";
// For each itinerary class
std::vector<InstrItinerary> &ItinList = *ProcListIter++;
@@ -531,6 +554,13 @@
// End processor itinerary table
OS << " { 1, ~0U, ~0U, ~0U, ~0U } // end marker\n";
OS << "};\n";
+
+ OS << '\n';
+ OS << "static const llvm::InstrItinerarySubtargetValue "
+ << Name << " = {\n";
+ OS << " &" << Name << "Props,\n";
+ OS << " " << Name << "Entries\n";
+ OS << "};\n";
}
}