From abbc6ddf240b0c868f18eaa43a310a3da858ced8 Mon Sep 17 00:00:00 2001
From: Dan Gohman <sunfish@mozilla.com>
Date: Thu, 31 Aug 2017 11:40:18 -0700
Subject: [PATCH] Use is_empty() instead of comparing len() with 0.

https://github.com/rust-lang-nursery/rust-clippy/wiki#len_zero
---
 lib/frontend/src/frontend.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/frontend/src/frontend.rs b/lib/frontend/src/frontend.rs
index 60b427b715..3c92e24bcc 100644
--- a/lib/frontend/src/frontend.rs
+++ b/lib/frontend/src/frontend.rs
@@ -530,7 +530,7 @@ where
 
     fn ebb_args_adjustement(&mut self, dest_ebb: Ebb, jump_args: &[Type]) {
         let ty_to_append: Option<Vec<Type>> =
-            if self.builder.ssa.predecessors(dest_ebb).len() == 0 ||
+            if self.builder.ssa.predecessors(dest_ebb).is_empty() ||
                 self.builder.ebbs[dest_ebb].pristine
             {
                 // This is the first jump instruction targeting this Ebb