Remove borrowck Upvar duplication

[Mark-Simulacrum]

This cuts out an extra allocation and copying over from the already cached closure capture information.

[Mark-Simulacrum]

@bors try @rust-timer queue

[rustbot]

r? @cjgillot

(rustbot has picked a reviewer for you, use r? to override)

[bors]

⌛ Trying commit 7d63175 with merge 9f304a6...

[bors]

☀️ Try build successful - checks-actions
Build commit: 9f304a6 (9f304a62cb20b0ea8f6e11f5d64ba5143a1a71d8)

[cjgillot]

R=me with one nit.

[cjgillot]

@bors r+

[bors]

📌 Commit d920dd8 has been approved by cjgillot

It is now in the queue for this repository.

[rust-timer]

Finished benchmarking commit (9f304a6): comparison URL.

Overall result: no relevant changes - no action needed

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 may lead to 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

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	3.0%	[1.8%, 4.9%]	4
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
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: 675.058s -> 674.703s (-0.05%)
Artifact size: 313.35 MiB -> 313.38 MiB (0.01%)

[bors]

⌛ Testing commit d920dd8 with merge 6cf0888...

[bors]

☀️ Test successful - checks-actions
Approved by: cjgillot
Pushing 6cf0888 to master...

[rust-timer]

Finished benchmarking commit (6cf0888): comparison URL.

Overall result: no relevant changes - no action needed

@rustbot label: -perf-regression

Instruction count

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

Max RSS (memory usage)

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	3.9%	[2.3%, 5.1%]	3
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-3.7%	[-4.6%, -2.8%]	2
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: 676.261s -> 673.544s (-0.40%)
Artifact size: 313.37 MiB -> 313.34 MiB (-0.01%)