Update match branches

This updates all places where match branches check on StatementKind or UseContext.
This doesn't properly implement them, but adds TODOs where they are, and also adds some best
guesses to what they should be in some cases.

Author: JulianKnodt

clippy_utils/src/qualify_min_const_fn.rs

@@ -210,14 +210,21 @@ fn check_statement(tcx: TyCtxt<'tcx>, body: &Body<'tcx>, def_id: DefId, statemen
         StatementKind::Assign(box (place, rval)) => {
             check_place(tcx, *place, span, body)?;
             check_rvalue(tcx, body, def_id, rval, span)
-        },
+        }
 
         StatementKind::FakeRead(_, place) |
         // just an assignment
         StatementKind::SetDiscriminant { place, .. } => check_place(tcx, **place, span, body),
 
         StatementKind::LlvmInlineAsm { .. } => Err((span, "cannot use inline assembly in const fn".into())),
 
+        StatementKind::CopyNonOverlapping(box rustc_middle::mir::CopyNonOverlapping{
+          dst, src, size,
+        }) => {
+          check_operand(tcx, dst, span, body)?;
+          check_operand(tcx, src, span, body)?;
+          check_operand(tcx, size, span, body)
+        },
         // These are all NOPs
         StatementKind::StorageLive(_)
         | StatementKind::StorageDead(_)