Auto merge of #78874 - m-ou-se:rollup-3jp1ijj, r=m-ou-se

Rollup of 19 pull requests

Successful merges:

 - #76097 (Stabilize hint::spin_loop)
 - #76227 (Stabilize `Poll::is_ready` and `is_pending` as const)
 - #78065 (make concurrency helper more pleasant to read)
 - #78570 (Remove FIXME comment in print_type_sizes ui test suite)
 - #78572 (Use SOCK_CLOEXEC and accept4() on more platforms.)
 - #78658 (Add a tool to run `x.py` from any subdirectory)
 - #78706 (Fix run-make tests running when LLVM is disabled)
 - #78728 (Constantify `UnsafeCell::into_inner` and related)
 - #78775 (Bump Rustfmt and RLS)
 - #78788 (Correct unsigned equivalent of isize to be usize)
 - #78811 (Make some std::io functions `const`)
 - #78828 (use single char patterns for split() (clippy::single_char_pattern))
 - #78841 (Small cleanup in `TypeFoldable` derive macro)
 - #78842 (Honor the rustfmt setting in config.toml)
 - #78843 (Less verbose debug logging from inlining integrator)
 - #78852 (Convert a bunch of intra-doc links)
 - #78860 (rustc_resolve: Use `#![feature(format_args_capture)]`)
 - #78861 (typo and formatting)
 - #78865 (Don't fire `CONST_ITEM_MUTATION` lint when borrowing a deref)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

1 files changed, 4 insertions, 4 deletions

diff --git a/compiler/rustc_mir/src/transform/coverage/debug.rs b/compiler/rustc_mir/src/transform/coverage/debug.rs
index cc697dfd7fe..ffa795134e2 100644
--- a/compiler/rustc_mir/src/transform/coverage/debug.rs
+++ b/compiler/rustc_mir/src/transform/coverage/debug.rs
@@ -147,8 +147,8 @@ impl DebugOptions {
         let mut counter_format = ExpressionFormat::default();
 
         if let Ok(env_debug_options) = std::env::var(RUSTC_COVERAGE_DEBUG_OPTIONS) {
-            for setting_str in env_debug_options.replace(" ", "").replace("-", "_").split(",") {
-                let mut setting = setting_str.splitn(2, "=");
+            for setting_str in env_debug_options.replace(" ", "").replace("-", "_").split(',') {
+                let mut setting = setting_str.splitn(2, '=');
                 match setting.next() {
                     Some(option) if option == "allow_unused_expressions" => {
                         allow_unused_expressions = bool_option_val(option, setting.next());
@@ -210,7 +210,7 @@ fn bool_option_val(option: &str, some_strval: Option<&str>) -> bool {
 
 fn counter_format_option_val(strval: &str) -> ExpressionFormat {
     let mut counter_format = ExpressionFormat { id: false, block: false, operation: false };
-    let components = strval.splitn(3, "+");
+    let components = strval.splitn(3, '+');
     for component in components {
         match component {
             "id" => counter_format.id = true,
@@ -695,7 +695,7 @@ pub(crate) fn dump_coverage_graphviz(
         let from_bcb_data = &basic_coverage_blocks[from_bcb];
         let from_terminator = from_bcb_data.terminator(mir_body);
         let mut edge_labels = from_terminator.kind.fmt_successor_labels();
-        edge_labels.retain(|label| label.to_string() != "unreachable");
+        edge_labels.retain(|label| label != "unreachable");
         let edge_counters = from_terminator
             .successors()
             .map(|&successor_bb| graphviz_data.get_edge_counter(from_bcb, successor_bb));