Introduce and use convenience methods for getting pointer types
where the element is of a basic builtin type.  For example, to get
an i8* use getInt8PtrTy.

llvm-svn: 83379
diff --git a/llvm/lib/Transforms/IPO/ExtractGV.cpp b/llvm/lib/Transforms/IPO/ExtractGV.cpp
index 3dd3a80..191100c 100644
--- a/llvm/lib/Transforms/IPO/ExtractGV.cpp
+++ b/llvm/lib/Transforms/IPO/ExtractGV.cpp
@@ -102,7 +102,7 @@
       {
         std::vector<Constant *> AUGs;
         const Type *SBP=
-              PointerType::getUnqual(Type::getInt8Ty(M.getContext()));
+              Type::getInt8PtrTy(M.getContext());
         for (std::vector<GlobalValue*>::iterator GI = Named.begin(), 
                GE = Named.end(); GI != GE; ++GI) {
           (*GI)->setLinkage(GlobalValue::ExternalLinkage);