Re-add DataLayout pointer size convenience functions.

These were reverted in r167222 along with the rest
of the last different address space pointer size attempt.
These will be used in later commits.

llvm-svn: 187223

1 files changed, 10 insertions, 0 deletions

diff --git a/llvm/lib/IR/DataLayout.cpp b/llvm/lib/IR/DataLayout.cpp
index adb2d7a62ac..d1096d74242 100644
--- a/llvm/lib/IR/DataLayout.cpp
+++ b/llvm/lib/IR/DataLayout.cpp
@@ -507,6 +507,16 @@ std::string DataLayout::getStringRepresentation() const {
   return OS.str();
 }
 
+unsigned DataLayout::getPointerTypeSizeInBits(Type *Ty) const {
+  assert(Ty->isPtrOrPtrVectorTy() &&
+         "This should only be called with a pointer or pointer vector type");
+
+  if (Ty->isPointerTy())
+    return getTypeSizeInBits(Ty);
+
+  Type *EleTy = cast<VectorType>(Ty)->getElementType();
+  return getTypeSizeInBits(EleTy);
+}
 
 /*!
   \param abi_or_pref Flag that determines which alignment is returned. true