a simple refactoring and removing comment.

rust-lang · Mar 15, 2019 · a8fa1a1 · a8fa1a1
1 parent 50af62d
commit a8fa1a1
Showing 1 changed file with 1 addition and 2 deletions.
diff --git a/src/librustc_mir/hair/pattern/_match.rs b/src/librustc_mir/hair/pattern/_match.rs
@@ -678,10 +678,9 @@ fn all_constructors<'a, 'tcx: 'a>(cx: &mut MatchCheckCtxt<'a, 'tcx>,
             ]
         }
         ty::Int(ity) => {
-            // FIXME(49937): refactor these bit manipulations into interpret.
             let bits = Integer::from_attr(&cx.tcx, SignedInt(ity)).size().bits() as u128;
             let min = 1u128 << (bits - 1);
-            let max = (1u128 << (bits - 1)) - 1;
+            let max = min - 1;
             vec![ConstantRange(min, max, pcx.ty, RangeEnd::Included)]
         }
         ty::Uint(uty) => {