rustdoc: Only look at blanket impls in get_blanket_impls

[jyn514]

The idea here is that all the work in

rust/compiler/rustc_middle/src/ty/trait_def.rs

Lines 172 to 186 in 16156fb

	if let Some(simp) = fast_reject::simplify_type(self, self_ty, true) {
	if let Some(impls) = impls.non_blanket_impls.get(&simp) {
	for &impl_def_id in impls {
	if let result @ Some(_) = f(impl_def_id) {
	return result;
	}
	}
	}
	} else {
	for &impl_def_id in impls.non_blanket_impls.values().flatten() {
	if let result @ Some(_) = f(impl_def_id) {
	return result;
	}
	}
	}

doesn't matter for get_blanket_impls - Rustdoc will already pick up on those blocks when it documents the item.

[rust-highfive]

r? @estebank

(rust-highfive has picked a reviewer for you, use r? to override)

[jyn514]

@bors try @rust-timer queue

[rust-timer]

Awaiting bors try build completion.

@rustbot label: +S-waiting-on-perf

[bors]

⌛ Trying commit 6f06b76 with merge 6cc75dacbffa90ef0bd6ee35dcdaf2046809c837...

[bors]

☀️ Try build successful - checks-actions
Build commit: 6cc75dacbffa90ef0bd6ee35dcdaf2046809c837 (6cc75dacbffa90ef0bd6ee35dcdaf2046809c837)

[rust-timer]

Queued 6cc75dacbffa90ef0bd6ee35dcdaf2046809c837 with parent 16156fb, future comparison URL.

[rust-timer]

Finished benchmarking try commit (6cc75dacbffa90ef0bd6ee35dcdaf2046809c837): comparison url.

Benchmarking this pull request likely means that it is perf-sensitive, so we're automatically marking it as not fit for rolling up. Please note that if the perf results are neutral, you should likely undo the rollup=never given below by specifying rollup- to bors.

Importantly, though, if the results of this run are non-neutral do not roll this PR up -- it will mask other regressions or improvements in the roll up.

@bors rollup=never
@rustbot label: +S-waiting-on-review -S-waiting-on-perf

[jyn514]

Nice, up to -19% on get_blanket impls and up to -3% overall. Not sure who should review - maybe

r? @Aaron1011

[Aaron1011]

@bors r+

[bors]

📌 Commit 6f06b76 has been approved by Aaron1011

[bors]

⌛ Testing commit 6f06b76 with merge 2a32abb...

[bors]

☀️ Test successful - checks-actions
Approved by: Aaron1011
Pushing 2a32abb to master...