use is_empty() instead of len() == x to determine if structs are empty.

2 files changed, 8 insertions, 8 deletions

diff --git a/src/librustc_codegen_ssa/back/link.rs b/src/librustc_codegen_ssa/back/link.rs
index 78aacc56ea4..90601521b19 100644
--- a/src/librustc_codegen_ssa/back/link.rs
+++ b/src/librustc_codegen_ssa/back/link.rs
@@ -1524,12 +1524,12 @@ fn add_upstream_rust_crates<'a, B: ArchiveBuilder<'a>>(
     for &(cnum, _) in deps.iter().rev() {
         if let Some(missing) = info.missing_lang_items.get(&cnum) {
             end_with.extend(missing.iter().cloned());
-            if end_with.len() > 0 && group_end.is_none() {
+            if !end_with.is_empty() && group_end.is_none() {
                 group_end = Some(cnum);
             }
         }
         end_with.retain(|item| info.lang_item_to_crate.get(item) != Some(&cnum));
-        if end_with.len() == 0 && group_end.is_some() {
+        if end_with.is_empty() && group_end.is_some() {
             group_start = Some(cnum);
             break;
         }
diff --git a/src/librustc_codegen_ssa/back/write.rs b/src/librustc_codegen_ssa/back/write.rs
index 92f795acc54..bc20ed6f6c5 100644
--- a/src/librustc_codegen_ssa/back/write.rs
+++ b/src/librustc_codegen_ssa/back/write.rs
@@ -1244,10 +1244,10 @@ fn start_executing_work<B: ExtraBackendMethods>(
         while !codegen_done
             || running > 0
             || (!codegen_aborted
-                && (work_items.len() > 0
-                    || needs_fat_lto.len() > 0
-                    || needs_thin_lto.len() > 0
-                    || lto_import_only_modules.len() > 0
+                && (!work_items.is_empty()
+                    || !needs_fat_lto.is_empty()
+                    || !needs_thin_lto.is_empty()
+                    || !lto_import_only_modules.is_empty()
                     || main_thread_worker_state != MainThreadWorkerState::Idle))
         {
             // While there are still CGUs to be codegened, the coordinator has
@@ -1289,7 +1289,7 @@ fn start_executing_work<B: ExtraBackendMethods>(
                 // Perform the serial work here of figuring out what we're
                 // going to LTO and then push a bunch of work items onto our
                 // queue to do LTO
-                if work_items.len() == 0
+                if work_items.is_empty()
                     && running == 0
                     && main_thread_worker_state == MainThreadWorkerState::Idle
                 {
@@ -1354,7 +1354,7 @@ fn start_executing_work<B: ExtraBackendMethods>(
 
             // Spin up what work we can, only doing this while we've got available
             // parallelism slots and work left to spawn.
-            while !codegen_aborted && work_items.len() > 0 && running < tokens.len() {
+            while !codegen_aborted && !work_items.is_empty() && running < tokens.len() {
                 let (item, _) = work_items.pop().unwrap();
 
                 maybe_start_llvm_timer(prof, cgcx.config(item.module_kind()), &mut llvm_start_time);