Support dependent extended vector types and template instantiation
thereof. Patch by Anders Johnsen!


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73641 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/ASTContext.cpp b/lib/AST/ASTContext.cpp
index d97d215..660b30a 100644
--- a/lib/AST/ASTContext.cpp
+++ b/lib/AST/ASTContext.cpp
@@ -1269,6 +1269,18 @@
   return QualType(New, 0);
 }
 
+QualType ASTContext::getDependentSizedExtVectorType(QualType vecType, 
+                                                    Expr *SizeExpr,
+                                                    SourceLocation AttrLoc) {
+  DependentSizedExtVectorType *New =
+      new (*this,8) DependentSizedExtVectorType(vecType, QualType(), 
+                                                SizeExpr, AttrLoc);
+
+  DependentSizedExtVectorTypes.push_back(New);
+  Types.push_back(New);
+  return QualType(New, 0);
+}
+
 /// getFunctionNoProtoType - Return a K&R style C function type like 'int()'.
 ///
 QualType ASTContext::getFunctionNoProtoType(QualType ResultTy) {
diff --git a/lib/AST/Type.cpp b/lib/AST/Type.cpp
index 40a997c..55a0952 100644
--- a/lib/AST/Type.cpp
+++ b/lib/AST/Type.cpp
@@ -50,6 +50,13 @@
   C.Deallocate(this);
 }
 
+void DependentSizedExtVectorType::Destroy(ASTContext& C) {
+  if (SizeExpr)
+    SizeExpr->Destroy(C);
+  this->~DependentSizedExtVectorType();
+  C.Deallocate(this);
+}
+
 /// getArrayElementTypeNoTypeQual - If this is an array type, return the
 /// element type of the array, potentially with type qualifiers missing.
 /// This method should never be used when type qualifiers are meaningful.
@@ -1356,6 +1363,19 @@
   getElementType().getAsStringInternal(S, Policy);
 }
 
+void DependentSizedExtVectorType::getAsStringInternal(std::string &S, const PrintingPolicy &Policy) const {
+  getElementType().getAsStringInternal(S, Policy);
+
+  S += " __attribute__((ext_vector_  type(";
+  if (getSizeExpr()) {
+    std::string SStr;
+    llvm::raw_string_ostream s(SStr);
+    getSizeExpr()->printPretty(s, 0, Policy);
+    S += s.str();
+  }
+  S += ")))";
+}
+
 void VectorType::getAsStringInternal(std::string &S, const PrintingPolicy &Policy) const {
   // FIXME: We prefer to print the size directly here, but have no way
   // to get the size of the type.