Back out r70506 (exception spec in AST) again. We won't have exception specs until we've had a lot more discussion.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71125 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/ASTContext.cpp b/lib/AST/ASTContext.cpp
index a947fea..c1a232c 100644
--- a/lib/AST/ASTContext.cpp
+++ b/lib/AST/ASTContext.cpp
@@ -1296,15 +1296,12 @@
 /// list.  isVariadic indicates whether the argument list includes '...'.
 QualType ASTContext::getFunctionType(QualType ResultTy,const QualType *ArgArray,
                                      unsigned NumArgs, bool isVariadic,
-                                     unsigned TypeQuals, bool hasExceptionSpec,
-                                     bool hasAnyExceptionSpec, unsigned NumExs,
-                                     const QualType *ExArray) {
+                                     unsigned TypeQuals) {
   // Unique functions, to guarantee there is only one function of a particular
   // structure.
   llvm::FoldingSetNodeID ID;
   FunctionProtoType::Profile(ID, ResultTy, ArgArray, NumArgs, isVariadic,
-                             TypeQuals, hasExceptionSpec, hasAnyExceptionSpec,
-                             NumExs, ExArray);
+                             TypeQuals);
 
   void *InsertPos = 0;
   if (FunctionProtoType *FTP = 
@@ -1324,32 +1321,24 @@
     CanonicalArgs.reserve(NumArgs);
     for (unsigned i = 0; i != NumArgs; ++i)
       CanonicalArgs.push_back(getCanonicalType(ArgArray[i]));
-    llvm::SmallVector<QualType, 2> CanonicalExs;
-    CanonicalExs.reserve(NumExs);
-    for (unsigned i = 0; i != NumExs; ++i)
-      CanonicalExs.push_back(getCanonicalType(ExArray[i]));
-
+    
     Canonical = getFunctionType(getCanonicalType(ResultTy),
                                 &CanonicalArgs[0], NumArgs,
-                                isVariadic, TypeQuals, hasExceptionSpec,
-                                hasAnyExceptionSpec, NumExs, &CanonicalExs[0]);
-
+                                isVariadic, TypeQuals);
+    
     // Get the new insert position for the node we care about.
     FunctionProtoType *NewIP =
       FunctionProtoTypes.FindNodeOrInsertPos(ID, InsertPos);
     assert(NewIP == 0 && "Shouldn't be in the map!"); NewIP = NewIP;
   }
-
+  
   // FunctionProtoType objects are allocated with extra bytes after them
-  // for two variable size arrays (for parameter and exception types) at the
-  // end of them.
+  // for a variable size array (for parameter types) at the end of them.
   FunctionProtoType *FTP = 
-    (FunctionProtoType*)Allocate(sizeof(FunctionProtoType) +
-                                 NumArgs*sizeof(QualType) +
-                                 NumExs*sizeof(QualType), 8);
+    (FunctionProtoType*)Allocate(sizeof(FunctionProtoType) + 
+                                 NumArgs*sizeof(QualType), 8);
   new (FTP) FunctionProtoType(ResultTy, ArgArray, NumArgs, isVariadic,
-                              TypeQuals, hasExceptionSpec, hasAnyExceptionSpec,
-                              ExArray, NumExs, Canonical);
+                              TypeQuals, Canonical);
   Types.push_back(FTP);
   FunctionProtoTypes.InsertNode(FTP, InsertPos);
   return QualType(FTP, 0);
@@ -2916,8 +2905,6 @@
     allRTypes = false;
 
   if (lproto && rproto) { // two C99 style function prototypes
-    assert(!lproto->hasExceptionSpec() && !rproto->hasExceptionSpec() &&
-           "C++ shouldn't be here");
     unsigned lproto_nargs = lproto->getNumArgs();
     unsigned rproto_nargs = rproto->getNumArgs();
 
@@ -2956,7 +2943,6 @@
 
   const FunctionProtoType *proto = lproto ? lproto : rproto;
   if (proto) {
-    assert(!proto->hasExceptionSpec() && "C++ shouldn't be here");
     if (proto->isVariadic()) return QualType();
     // Check that the types are compatible with the types that
     // would result from default argument promotions (C99 6.7.5.3p15).
diff --git a/lib/AST/Type.cpp b/lib/AST/Type.cpp
index 9308288..d6cf4bd 100644
--- a/lib/AST/Type.cpp
+++ b/lib/AST/Type.cpp
@@ -920,26 +920,17 @@
 void FunctionProtoType::Profile(llvm::FoldingSetNodeID &ID, QualType Result,
                                 arg_type_iterator ArgTys,
                                 unsigned NumArgs, bool isVariadic,
-                                unsigned TypeQuals, bool hasExceptionSpec,
-                                bool anyExceptionSpec, unsigned NumExceptions,
-                                exception_iterator Exs) {
+                                unsigned TypeQuals) {
   ID.AddPointer(Result.getAsOpaquePtr());
   for (unsigned i = 0; i != NumArgs; ++i)
     ID.AddPointer(ArgTys[i].getAsOpaquePtr());
   ID.AddInteger(isVariadic);
   ID.AddInteger(TypeQuals);
-  ID.AddInteger(hasExceptionSpec);
-  if (hasExceptionSpec) {
-    ID.AddInteger(anyExceptionSpec);
-    for(unsigned i = 0; i != NumExceptions; ++i)
-      ID.AddPointer(Exs[i].getAsOpaquePtr());
-  }
 }
 
 void FunctionProtoType::Profile(llvm::FoldingSetNodeID &ID) {
   Profile(ID, getResultType(), arg_type_begin(), NumArgs, isVariadic(),
-          getTypeQuals(), hasExceptionSpec(), hasAnyExceptionSpec(),
-          getNumExceptions(), exception_begin());
+          getTypeQuals());
 }
 
 void ObjCQualifiedInterfaceType::Profile(llvm::FoldingSetNodeID &ID,