Added support to have TableGen provide information if an intrinsic (core
or target) can be overloaded or not.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65404 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/IntrinsicEmitter.cpp b/utils/TableGen/IntrinsicEmitter.cpp
index 37fc670..8800a77 100644
--- a/utils/TableGen/IntrinsicEmitter.cpp
+++ b/utils/TableGen/IntrinsicEmitter.cpp
@@ -35,7 +35,10 @@
 
   // Emit the intrinsic ID -> name table.
   EmitIntrinsicToNameTable(Ints, OS);
-  
+
+  // Emit the intrinsic ID -> overload table.
+  EmitIntrinsicToOverloadTable(Ints, OS);
+
   // Emit the function name recognizer.
   EmitFnNameRecognizer(Ints, OS);
   
@@ -120,6 +123,23 @@
   OS << "#endif\n\n";
 }
 
+void IntrinsicEmitter::
+EmitIntrinsicToOverloadTable(const std::vector<CodeGenIntrinsic> &Ints, 
+                         std::ostream &OS) {
+  OS << "// Intrinsic ID to overload table\n";
+  OS << "#ifdef GET_INTRINSIC_OVERLOAD_TABLE\n";
+  OS << "  // Note that entry #0 is the invalid intrinsic!\n";
+  for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
+    OS << "  ";
+    if (Ints[i].isOverloaded)
+      OS << "true";
+    else
+      OS << "false";
+    OS << ",\n";
+  }
+  OS << "#endif\n\n";
+}
+
 static void EmitTypeForValueType(std::ostream &OS, MVT::SimpleValueType VT) {
   if (MVT(VT).isInteger()) {
     unsigned BitWidth = MVT(VT).getSizeInBits();