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Avoid a collection and iteration on empty passes

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blyxyas 2024-02-09 19:15:40 +01:00
parent 8fb67fb37f
commit e59d9b171e
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1 changed files with 6 additions and 6 deletions
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12
compiler/rustc_lint/src/late.rs
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@ -364,14 +364,14 @@ pub fn late_lint_mod<'tcx, T: LateLintPass<'tcx> + 'tcx>(
// Note: `passes` is often empty. In that case, it's faster to run
// `builtin_lints` directly rather than bundling it up into the
// `RuntimeCombinedLateLintPass`.
let mut passes: Vec<_> = unerased_lint_store(tcx.sess)
.late_module_passes
.iter()
.map(|mk_pass| (mk_pass)(tcx))
.collect();
if passes.is_empty() {
let late_module_passes = &unerased_lint_store(tcx.sess).late_module_passes;
if late_module_passes.is_empty() {
late_lint_mod_inner(tcx, module_def_id, context, builtin_lints);
} else {
let mut passes: Vec<_> = late_module_passes
.iter()
.map(|mk_pass| (mk_pass)(tcx))
.collect();
passes.push(Box::new(builtin_lints));
let pass = RuntimeCombinedLateLintPass { passes: &mut passes[..] };
late_lint_mod_inner(tcx, module_def_id, context, pass);