[benchmark] Janitor Duty: Sisyphus Legacy

[palimondo]

This PR follows-up #20861, #21413, #21516, #21794 and #22026 in clean-up efforts to enable robust performance measurements by adjusting workloads to run in reasonable time (< 1000 μs), minimizing the accumulated error. To maintain long-term performance tracking, it applies legacy factor where necessary.

This one's just the remainder of benchmarks wading through the rest of the alphabet. (There still might be some loose ends to tie later on...)

[palimondo]

@swift-ci Please benchmark

[palimondo]

@swift-ci Please smoke test

[palimondo]

@eeckstein Please review 🙏

[swift-ci]

Build comment file:

Performance: -O

TEST	OLD	NEW	DELTA	RATIO
Improvement
ObjectiveCBridgeStubToNSDate2	1346	1247	-7.4%	1.08x (?)

Code size: -O

TEST	OLD	NEW	DELTA	RATIO
Improvement
StackPromo.o	2327	1895	-18.6%	1.23x
SequenceAlgos.o	20482	19930	-2.7%	1.03x

Performance: -Osize

TEST	OLD	NEW	DELTA	RATIO
Regression
NopDeinit	42600	46500	+9.2%	0.92x (?)

Code size: -Osize

TEST	OLD	NEW	DELTA	RATIO
Improvement
StackPromo.o	2373	1909	-19.6%	1.24x
SequenceAlgos.o	20970	20386	-2.8%	1.03x

How to read the data

The tables contain differences in performance which are larger than 8% and differences in code size which are larger than 1%.

If you see any unexpected regressions, you should consider fixing the
regressions before you merge the PR.

Noise: Sometimes the performance results (not code size!) contain false
alarms. Unexpected regressions which are marked with '(?)' are probably noise.
If you see regressions which you cannot explain you can try to run the
benchmarks again. If regressions still show up, please consult with the
performance team (@eeckstein).

Hardware Overview

  Model Name: Mac Pro
  Model Identifier: MacPro6,1
  Processor Name: 8-Core Intel Xeon E5
  Processor Speed: 3 GHz
  Number of Processors: 1
  Total Number of Cores: 8
  L2 Cache (per Core): 256 KB
  L3 Cache: 25 MB
  Memory: 64 GB

--------------

[palimondo]

@gottesmm Could you review this in Erik's stead, while he's away please?

[gottesmm]

Sorry, I am not available for review for this code.

[palimondo]

@atrick Would you be available to review this, please? 🙏

[palimondo]

@eeckstein Thank you!