Feat/inline always+target feature #2 no callsite

[Jamesbarford]

I've branched off my actually branch for inline_always + target_features to see what removing a rather odd application of adding inline attributes to the callsite and definition impact on perf is

r? @ghost

[Jamesbarford]

@bors try @rust-timer queue

[rust-bors]

☀️ Try build successful (CI)
Build commit: 2a0e52c (2a0e52cc8ff87a8847f8576945d327e73b4f1385)
Base parent: c999cef (c999cef531ea9059e189e82fe0e82c5daf249bc9)

[rust-timer]

Finished benchmarking commit (2a0e52c): comparison URL.

Overall result: ✅ improvements - no action needed

Benchmarking means the PR may be perf-sensitive. It's automatically marked not fit for rolling up. Overriding is possible but disadvised: it risks changing compiler perf.

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

Instruction count

Our most reliable metric. Used to determine the overall result above. However, even this metric can be noisy.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-0.3%	[-0.4%, -0.1%]	14
All ❌✅ (primary)	-	-	0

Max RSS (memory usage)

Results (primary 0.2%, secondary -1.3%)

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

	mean	range	count
Regressions ❌ (primary)	2.8%	[1.5%, 4.0%]	2
Regressions ❌ (secondary)	3.1%	[3.1%, 3.1%]	1
Improvements ✅ (primary)	-2.3%	[-2.3%, -2.2%]	2
Improvements ✅ (secondary)	-2.4%	[-3.1%, -1.9%]	4
All ❌✅ (primary)	0.2%	[-2.3%, 4.0%]	4

Cycles

Results (secondary 0.5%)

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)	4.1%	[4.1%, 4.1%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-3.0%	[-3.0%, -3.0%]	1
All ❌✅ (primary)	-	-	0

Binary size

This perf run didn't have relevant results for this metric.

Bootstrap: 500.132s -> 499.359s (-0.15%)
Artifact size: 406.81 MiB -> 408.76 MiB (0.48%)