Leave from CopyProp early when there are no replacements

[tmiasko]

r? cjgillot

[rustbot]

Some changes occurred to MIR optimizations

cc @rust-lang/wg-mir-opt

[cjgillot]

@bors try @rust-timer queue

[bors]

⌛ Trying commit c353539 with merge fb8fc2c...

[bors]

☀️ Try build successful - checks-actions
Build commit: fb8fc2c (fb8fc2c158d909df693abe433f3aa7da3b68db9e)

[rust-timer]

Finished benchmarking commit (fb8fc2c): comparison URL.

Overall result: no relevant changes - no action needed

Benchmarking this pull request means it may be perf-sensitive – we'll automatically label it not fit for rolling up. You can override this, but we strongly advise not to, due to possible changes in compiler perf.

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

Instruction count

This benchmark run did not return any relevant results for this metric.

Max RSS (memory usage)

Results (secondary -2.1%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-2.1%	[-3.2%, -1.6%]	3
All ❌✅ (primary)	-	-	0

Cycles

This benchmark run did not return any relevant results for this metric.

Binary size

This benchmark run did not return any relevant results for this metric.

Bootstrap: 689.082s -> 689.371s (0.04%)
Artifact size: 371.89 MiB -> 371.87 MiB (-0.01%)

[cjgillot]

@bors r+

[bors]

📌 Commit c353539 has been approved by cjgillot

It is now in the queue for this repository.