[IR] Remove unnecessary pointer type check (NFC)

With opaque pointers, the address spaces will only be the same if
the types are the same, in which case this would have been handled
at the start of the method already.

1 files changed, 3 insertions, 10 deletions

diff --git a/llvm/lib/IR/Type.cpp b/llvm/lib/IR/Type.cpp
index 3d2e203..a185ca3 100644
--- a/llvm/lib/IR/Type.cpp
+++ b/llvm/lib/IR/Type.cpp
@@ -141,16 +141,9 @@ bool Type::canLosslesslyBitCastTo(Type *Ty) const {
       Ty->getPrimitiveSizeInBits().getFixedValue() == 8192)
     return true;
 
-  // At this point we have only various mismatches of the first class types
-  // remaining and ptr->ptr. Just select the lossless conversions. Everything
-  // else is not lossless. Conservatively assume we can't losslessly convert
-  // between pointers with different address spaces.
-  if (auto *PTy = dyn_cast<PointerType>(this)) {
-    if (auto *OtherPTy = dyn_cast<PointerType>(Ty))
-      return PTy->getAddressSpace() == OtherPTy->getAddressSpace();
-    return false;
-  }
-  return false;  // Other types have no identity values
+  // Conservatively assume we can't losslessly convert between pointers with
+  // different address spaces.
+  return false;
 }
 
 bool Type::isEmptyTy() const {