[perf] Don't normalize self ty potentially 2 times

[compiler-errors]

This potentially does not do anything perf-wise... This is a preparation for a more involved test for doing less work when computing the proven_via.

[compiler-errors]

@bors2 try @rust-timer queue

[rust-bors]

⌛ Trying commit 2650a28 with merge 2303972…

To cancel the try build, run the command @bors2 try cancel.

[rust-bors]

☀️ Try build successful (CI)
Build commit: 2303972 (23039727a600350fd2c505e80349a9e05d43c647, parent: 706f244db581212cabf2e619e0113d70999b2bbe)

[rust-timer]

Finished benchmarking commit (2303972): comparison URL.

Overall result: no relevant changes - no action needed

Benchmarking this pull request means it may be perf-sensitive – we'll automatically label it not fit for rolling up. You can override this, but we strongly advise not to, due to possible 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 (primary -1.2%, secondary 5.9%)

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)	5.9%	[5.9%, 5.9%]	1
Improvements ✅ (primary)	-1.2%	[-1.2%, -1.2%]	1
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-1.2%	[-1.2%, -1.2%]	1

Cycles

Results (secondary -2.9%)

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)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-2.9%	[-8.0%, -2.0%]	12
All ❌✅ (primary)	-	-	0

Binary size

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

Bootstrap: 688.989s -> 690.646s (0.24%)
Artifact size: 371.96 MiB -> 372.01 MiB (0.01%)