Moving this function to a permanent home to prevent a dependency cycle created

by the inline heuristic.  Was preventing llvm-gcc4 from building.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29278 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 19 insertions, 0 deletions

diff --git a/lib/VMCore/Type.cpp b/lib/VMCore/Type.cpp
index a393556bc6..1fdec943c4 100644
--- a/lib/VMCore/Type.cpp
+++ b/lib/VMCore/Type.cpp
@@ -33,6 +33,25 @@ using namespace llvm;
 
 AbstractTypeUser::~AbstractTypeUser() {}
 
+
+//===----------------------------------------------------------------------===//
+//                         Type PATypeHolder Implementation
+//===----------------------------------------------------------------------===//
+
+// This routine was moved here to resolve a cyclic dependency caused by
+// inline heuristics.
+
+/// get - This implements the forwarding part of the union-find algorithm for
+/// abstract types.  Before every access to the Type*, we check to see if the
+/// type we are pointing to is forwarding to a new type.  If so, we drop our
+/// reference to the type.
+///
+Type* PATypeHolder::get() const {
+  const Type *NewTy = Ty->getForwardedType();
+  if (!NewTy) return const_cast<Type*>(Ty);
+  return *const_cast<PATypeHolder*>(this) = NewTy;
+}
+
 //===----------------------------------------------------------------------===//
 //                         Type Class Implementation
 //===----------------------------------------------------------------------===//