2023-10-10 Triage Log

A quiet week, with few regressions and improvements.

Triage done by @simulacrum. Revision range: 9998f4add08c3d09c82e00975cf3a293b30160ec..84d44dd1d8ec1e98fff94272ba4f96b2a1f044ca

Summary:

(instructions:u)	mean	range	count
Regressions ❌ (primary)	0.8%	[0.3%, 2.9%]	47
Regressions ❌ (secondary)	1.1%	[0.2%, 4.8%]	19
Improvements ✅ (primary)	-2.0%	[-3.6%, -0.4%]	2
Improvements ✅ (secondary)	-0.5%	[-0.7%, -0.4%]	11
All ❌✅ (primary)	0.7%	[-3.6%, 2.9%]	49

1 Regressions, 2 Improvements, 4 Mixed; 1 of them in rollups 68 artifact comparisons made in total

Regressions

Rollup of 7 pull requests #116492 (Comparison Link)

(instructions:u)	mean	range	count
Regressions ❌ (primary)	0.9%	[0.7%, 1.0%]	2
Regressions ❌ (secondary)	2.3%	[1.2%, 3.6%]	4
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	0.9%	[0.7%, 1.0%]	2

This is likely due to better ability to optimize, see comment.

Improvements

Rollup of 5 pull requests #116455 (Comparison Link)

(instructions:u)	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-0.7%	[-0.9%, -0.5%]	3
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-0.7%	[-0.9%, -0.5%]	3

Generalize small dominators optimization #116454 (Comparison Link)

(instructions:u)	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-0.5%	[-0.8%, -0.3%]	7
Improvements ✅ (secondary)	-0.9%	[-1.1%, -0.7%]	7
All ❌✅ (primary)	-0.5%	[-0.8%, -0.3%]	7

Mixed

Make subtyping explicit in MIR #115025 (Comparison Link)

(instructions:u)	mean	range	count
Regressions ❌ (primary)	0.6%	[0.4%, 0.8%]	2
Regressions ❌ (secondary)	0.5%	[0.1%, 1.1%]	17
Improvements ✅ (primary)	-0.5%	[-0.6%, -0.5%]	2
Improvements ✅ (secondary)	-0.5%	[-0.5%, -0.5%]	1
All ❌✅ (primary)	0.0%	[-0.6%, 0.8%]	4

Remove mir::LocalDecl::internal. #116427 (Comparison Link)

(instructions:u)	mean	range	count
Regressions ❌ (primary)	0.6%	[0.4%, 0.8%]	4
Regressions ❌ (secondary)	0.1%	[0.1%, 0.1%]	1
Improvements ✅ (primary)	-0.4%	[-0.4%, -0.4%]	1
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	0.4%	[-0.4%, 0.8%]	5

Remove is global hack #116417 (Comparison Link)

(instructions:u)	mean	range	count
Regressions ❌ (primary)	0.4%	[0.1%, 1.4%]	22
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-0.7%	[-0.9%, -0.2%]	7
All ❌✅ (primary)	0.4%	[0.1%, 1.4%]	22

Always preserve DebugInfo in DeadStoreElimination. #116183 (Comparison Link)

(instructions:u)	mean	range	count
Regressions ❌ (primary)	0.7%	[0.2%, 3.1%]	30
Regressions ❌ (secondary)	1.4%	[0.1%, 2.3%]	13
Improvements ✅ (primary)	-1.1%	[-3.1%, -0.2%]	4
Improvements ✅ (secondary)	-0.3%	[-0.3%, -0.3%]	1
All ❌✅ (primary)	0.5%	[-3.1%, 3.1%]	34