Implement a constant pointer value

llvm-svn: 667

1 files changed, 9 insertions, 0 deletions

diff --git a/llvm/lib/VMCore/ConstPoolVals.cpp b/llvm/lib/VMCore/ConstPoolVals.cpp
index d53130d6012..152209dcc7d 100644
--- a/llvm/lib/VMCore/ConstPoolVals.cpp
+++ b/llvm/lib/VMCore/ConstPoolVals.cpp
@@ -43,6 +43,9 @@ ConstPoolVal *ConstPoolVal::getNullConstant(const Type *Ty) {
 
   case Type::FloatTyID:
   case Type::DoubleTyID: return ConstPoolFP::get(Ty, 0);
+
+  case Type::PointerTyID: 
+    return ConstPoolPointer::getNullPointer(Ty->castPointerType());
   default:
     return 0;
   }
@@ -98,6 +101,8 @@ ConstPoolStruct::ConstPoolStruct(const StructType *T,
   }
 }
 
+ConstPoolPointer::ConstPoolPointer(const PointerType *T) : ConstPoolVal(T) {}
+
 
 //===----------------------------------------------------------------------===//
 //                          getStrValue implementations
@@ -144,6 +149,10 @@ string ConstPoolStruct::getStrValue() const {
   return Result + " }";
 }
 
+string ConstPoolPointer::getStrValue() const {
+  return "null";
+}
+
 //===----------------------------------------------------------------------===//
 //                      isValueValidForType implementations