Let InstCombine remove Clone shims inside Clone shims

saethlin · scottmcm · saethlin · commit 92c0ad77d5d6 · 2024-07-25T15:14:42.000-04:00
Co-authored-by: scottmcm &lt;scottmcm@users.noreply.github.com&gt;
diff --git a/rtstartup/rsbegin.rs b/rtstartup/rsbegin.rs
@@ -29,6 +29,8 @@ trait Copy {}
 #[lang = "freeze"]
 auto trait Freeze {}
 
+impl<T: ?Sized> Copy for *mut T {}
+
 #[lang = "drop_in_place"]
 #[inline]
 #[allow(unconditional_recursion)]
diff --git a/rtstartup/rsend.rs b/rtstartup/rsend.rs
@@ -17,6 +17,8 @@ trait Copy {}
 #[lang = "freeze"]
 auto trait Freeze {}
 
+impl<T: ?Sized> Copy for *mut T {}
+
 #[lang = "drop_in_place"]
 #[inline]
 #[allow(unconditional_recursion)]
