Move global analyses from lowering to resolution

[cjgillot]

Split off #87234

r? @petrochenkov

[cjgillot]

@bors try @rust-timer queue

[rust-timer]

Awaiting bors try build completion.

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

[bors]

⌛ Trying commit f8efe5d with merge 55a2679034dcd10e43a84a540a604d67e8e26cbe...

[bors]

☀️ Try build successful - checks-actions
Build commit: 55a2679034dcd10e43a84a540a604d67e8e26cbe (55a2679034dcd10e43a84a540a604d67e8e26cbe)

[rust-timer]

Queued 55a2679034dcd10e43a84a540a604d67e8e26cbe with parent fcce644, future comparison URL.

[rust-timer]

Finished benchmarking try commit (55a2679034dcd10e43a84a540a604d67e8e26cbe): comparison url.

Summary: This change led to moderate relevant mixed results 🤷 in compiler performance.

• Moderate improvement in instruction counts (up to -1.6% on incr-unchanged builds of keccak)
• Small regression in instruction counts (up to 0.6% on full builds of deep-vector)

If you disagree with this performance assessment, please file an issue in rust-lang/rustc-perf.

Benchmarking this pull request likely means that it is perf-sensitive, so we're automatically marking it as not fit for rolling up. While you can manually mark this PR as fit for rollup, we strongly recommend not doing so since this PR led to changes in compiler perf.

Next Steps: If you can justify the regressions found in this perf run, please indicate this with @rustbot label: +perf-regression-triaged along with sufficient written justification. If you cannot justify the regressions please fix the regressions and do another perf run. If the next run shows neutral or positive results, the label will be automatically removed.

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

[petrochenkov]

@bors r+

[bors]

📌 Commit 5e3cd6a has been approved by petrochenkov

[bors]

⌛ Testing commit 5e3cd6a with merge 577a76f...

[bors]

☀️ Test successful - checks-actions
Approved by: petrochenkov
Pushing 577a76f to master...

[pnkfelix]

This was identified as yielding a moderate improvement in instruction counts (up to -1.6% on incr-unchanged builds of keccak) during weekly performance triage. Thanks and good job! 🎉

[Mark-Simulacrum]

Small regressions are limited to stress tests -- marking as triaged, the benefits here outweigh the relatively small regressions.