Change how tblgen generates attributes for intrinsics to use a single

switch.  With this newfound organization, teach tblgen how not to give
all intrinsics the 'nounwind' attribute.  Introduce a new intrinsic,
llvm.eh.resume, which does not have this attribute.  Documentation and uses
to follow.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132252 91177308-0d34-0410-b5e6-96231b3b80d8

utils/TableGen/CodeGenTarget.cpp

@@ -460,6 +460,7 @@ CodeGenIntrinsic::CodeGenIntrinsic(Record *R) {
   ModRef = ReadWriteMem;
   isOverloaded = false;
   isCommutative = false;
+  canThrow = false;
 
   if (DefName.size() <= 4 ||
       std::string(DefName.begin(), DefName.begin() + 4) != "int_")
@@ -582,10 +583,15 @@ CodeGenIntrinsic::CodeGenIntrinsic(Record *R) {
       ModRef = ReadWriteArgMem;
     else if (Property->getName() == "Commutative")
       isCommutative = true;
+    else if (Property->getName() == "Throws")
+      canThrow = true;
     else if (Property->isSubClassOf("NoCapture")) {
       unsigned ArgNo = Property->getValueAsInt("ArgNo");
       ArgumentAttributes.push_back(std::make_pair(ArgNo, NoCapture));
     } else
       assert(0 && "Unknown property!");
   }
+
+  // Sort the argument attributes for later benefit.
+  std::sort(ArgumentAttributes.begin(), ArgumentAttributes.end());
 }