Add a regression test for argument copies with DestinationPropagation

[saethlin]

This example, as a codegen test: #105813 (comment)

r? @tmiasko

[tmiasko]

@bors r+ rollup=never codegen test

[bors]

📌 Commit 1801611b314a4205ff89580ab7a4f05dceb929af has been approved by tmiasko

It is now in the queue for this repository.

[bors]

⌛ Testing commit 1801611b314a4205ff89580ab7a4f05dceb929af with merge a4bdc47796082ecd6160777c17fcca83c424a64c...

[bors]

💔 Test failed - checks-actions

[saethlin]

The alignment of u64 is 8 on 64-bit systems but 4 on 32-bit, so the codegen test failed on a 32-bit target. I switched T to [u8; 256].

[tmiasko]

@bors r+

[bors]

📌 Commit aa5e6c2a7b3edec0fb9534b45164fc2a7a62e5c5 has been approved by tmiasko

It is now in the queue for this repository.

[bors]

🌲 The tree is currently closed for pull requests below priority 999. This pull request will be tested once the tree is reopened.

[JohnTitor]

A test file now has to be added to the tests dir on the root, see #106458
@bors r-

[tmiasko]

@bors delegate=saethlin

[bors]

✌️ @saethlin can now approve this pull request

[saethlin]

@bors r=tmiasko rollup=never codegen test

[bors]

📌 Commit 13eec69 has been approved by tmiasko

It is now in the queue for this repository.

[bors]

⌛ Testing commit 13eec69 with merge 1e4f900...

[bors]

☀️ Test successful - checks-actions
Approved by: tmiasko
Pushing 1e4f900 to master...

[rust-timer]

Finished benchmarking commit (1e4f900): 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)	3.4%	[2.0%, 4.6%]	10
Regressions ❌ (secondary)	2.3%	[0.6%, 4.4%]	89
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-3.4%	[-3.4%, -3.4%]	1
All ❌✅ (primary)	3.4%	[2.0%, 4.6%]	10

Cycles

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)	23.0%	[23.0%, 23.0%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0