Auto merge of rust-lang#135994 - 1c3t3a:rename-unsafe-ptr, r=oli-obk

Rename rustc_middle::Ty::is_unsafe_ptr to is_raw_ptr

The wording unsafe pointer is less common and not mentioned in a lot of places, instead this is usually called a "raw pointer". For the sake of uniformity, we rename this method.
This came up during the review of
rust-lang#134424.

r? `@Noratrieb`

Author: bors

src/base.rs

@@ -900,8 +900,8 @@ fn codegen_stmt<'tcx>(
                     };
                     let data = codegen_operand(fx, data);
                     let meta = codegen_operand(fx, meta);
-                    assert!(data.layout().ty.is_unsafe_ptr());
-                    assert!(layout.ty.is_unsafe_ptr());
+                    assert!(data.layout().ty.is_raw_ptr());
+                    assert!(layout.ty.is_raw_ptr());
                     let ptr_val = if meta.layout().is_zst() {
                         data.cast_pointer_to(layout)
                     } else {

src/vtable.rs

@@ -48,7 +48,7 @@ pub(crate) fn get_ptr_and_method_ref<'tcx>(
 ) -> (Pointer, Value) {
     let (ptr, vtable) = 'block: {
         if let BackendRepr::Scalar(_) = arg.layout().backend_repr {
-            while !arg.layout().ty.is_unsafe_ptr() && !arg.layout().ty.is_ref() {
+            while !arg.layout().ty.is_raw_ptr() && !arg.layout().ty.is_ref() {
                 let (idx, _) = arg
                     .layout()
                     .non_1zst_field(fx)