rebase, add Type* overloads

Created using spr 1.3.7-beta.1

Author: arichardson

llvm/include/llvm/IR/DataLayout.h

@@ -404,6 +404,10 @@ class DataLayout {
   bool hasUnstableRepresentation(unsigned AddrSpace) const {
     return getPointerSpec(AddrSpace).HasUnstableRepresentation;
   }
+  bool hasUnstableRepresentation(Type *Ty) const {
+    auto *PTy = dyn_cast<PointerType>(Ty->getScalarType());
+    return PTy && hasUnstableRepresentation(PTy->getPointerAddressSpace());
+  }
 
   /// Returns whether this address space has external state (implies having
   /// a non-integral pointer representation).
@@ -416,6 +420,10 @@ class DataLayout {
   bool hasExternalState(unsigned AddrSpace) const {
     return getPointerSpec(AddrSpace).HasExternalState;
   }
+  bool hasExternalState(Type *Ty) const {
+    auto *PTy = dyn_cast<PointerType>(Ty->getScalarType());
+    return PTy && hasExternalState(PTy->getPointerAddressSpace());
+  }
 
   /// Returns whether passes should avoid introducing `inttoptr` instructions
   /// for this address space.