Also use the inferred display name in the check stamp

This changes the spelling of the stamp name to include more hyphens in some
cases, but that should make no functional difference.

Author: Zalathar

src/bootstrap/src/core/build_steps/check.rs

@@ -428,7 +428,7 @@ macro_rules! tool_check_step {
 
             fn run(self, builder: &Builder<'_>) {
                 let Self { target } = self;
-                run_tool_check_step(builder, target, stringify!($name), $path, $source_type);
+                run_tool_check_step(builder, target, $path, $source_type);
             }
         }
     }
@@ -438,7 +438,6 @@ macro_rules! tool_check_step {
 fn run_tool_check_step(
     builder: &Builder<'_>,
     target: TargetSelection,
-    step_type_name: &str,
     path: &str,
     source_type: SourceType,
 ) {
@@ -466,7 +465,7 @@ fn run_tool_check_step(
 
     let stamp = builder
         .cargo_out(compiler, Mode::ToolRustc, target)
-        .join(format!(".{}-check.stamp", step_type_name.to_lowercase()));
+        .join(format!(".{display_name}-check.stamp"));
 
     let _guard = builder.msg_check(&format!("{display_name} artifacts"), target);
     run_cargo(builder, cargo, builder.config.free_args.clone(), &stamp, vec![], true, false);