The lint doesn't improve perf (yet)

diff --git a/clippy_lints/src/bit_mask.rs b/clippy_lints/src/bit_mask.rs
index 889f74d52e79a6211094631f3225a3dea86c94fd..f56c0b2aeb33002e1420179caef91df4b1fc8f6c 100644 (file)
--- a/clippy_lints/src/bit_mask.rs
+++ b/clippy_lints/src/bit_mask.rs
@@ -76,7 +76,7 @@
 ///
 /// **Why is this bad?** `x.trailing_zeros() > 4` is much clearer than `x & 15 == 0`
 ///
-/// **Known problems:** None
+/// **Known problems:** llvm generates better code for `x & 15 == 0` on x86
 ///
 /// **Example:**
 /// ```rust