Tweaks to stable hashing

[cjgillot]

No description provided.

[rust-highfive]

r? @Mark-Simulacrum

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[cjgillot]

@bors try @rust-timer queue

[rust-timer]

Awaiting bors try build completion.

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

[bors]

⌛ Trying commit 34e92bb with merge 652124724cf46466b3f672dcf38d1e4f16eae05b...

[bors]

☀️ Try build successful - checks-actions
Build commit: 652124724cf46466b3f672dcf38d1e4f16eae05b (652124724cf46466b3f672dcf38d1e4f16eae05b)

[rust-timer]

Queued 652124724cf46466b3f672dcf38d1e4f16eae05b with parent b3e19a2, future comparison URL.

[rust-timer]

Finished benchmarking try commit (652124724cf46466b3f672dcf38d1e4f16eae05b): 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

[jackh726]

Nice. Slight regression in ctfe-stress full, but big wins in incr patched. Looks like mostly just #[inline]s.

r? @jackh726
@bors r+

[bors]

📌 Commit 34e92bb has been approved by jackh726

[bors]

⌛ Testing commit 34e92bb with merge acca818...

[bors]

☀️ Test successful - checks-actions
Approved by: jackh726
Pushing acca818 to master...