The lint doesn't improve perf (yet)

2017-07-10 09:50:36 +02:00 · 2017-07-10 09:50:36 +02:00 · a5fe4bed0e
commit a5fe4bed0e
parent 7102442a4b
1 changed files with 1 additions and 1 deletions
--- a/clippy_lints/src/bit_mask.rs
+++ b/clippy_lints/src/bit_mask.rs
@ -76,7 +76,7 @@ declare_lint! {
 ///
 /// **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