Fix load alignment being applied to referenced value

Author: sapir

src/builder.rs

@@ -948,15 +948,15 @@ impl<'a, 'gcc, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'gcc, 'tcx> {
         // NOTE: instead of returning the dereference here, we have to assign it to a variable in
         // the current basic block. Otherwise, it could be used in another basic block, causing a
         // dereference after a drop, for instance.
+        let ptr = self.context.new_cast(self.location, ptr, pointee_ty.make_pointer());
+        let deref = ptr.dereference(self.location).to_rvalue();
         // FIXME(antoyo): this check that we don't call get_aligned() a second time on a type.
         // Ideally, we shouldn't need to do this check.
         let aligned_type = if pointee_ty == self.cx.u128_type || pointee_ty == self.cx.i128_type {
             pointee_ty
         } else {
             pointee_ty.get_aligned(align.bytes())
         };
-        let ptr = self.context.new_cast(self.location, ptr, aligned_type.make_pointer());
-        let deref = ptr.dereference(self.location).to_rvalue();
         let loaded_value = function.new_local(
             self.location,
             aligned_type,