Move THIR printing to rustc_mir_build.

[cjgillot]

#107451 increased the compilation time of rustc_middle by 10% = 3s.

As #107006 adds quite a lot of code to rustc_middle, I suspect it to be the cause.

This PR moves the THIR printing code to rustc_mir_build, where the query provider lives, in order to benefit from higher parallelism when compiling rustc.

[rustbot]

r? @oli-obk

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[cjgillot]

@bors try @rust-timer queue

[bors]

⌛ Trying commit 380ca0c with merge efe988676fe0b79db5fd33ef6e99ea0986738ba9...

[bors]

☀️ Try build successful - checks-actions
Build commit: efe988676fe0b79db5fd33ef6e99ea0986738ba9 (efe988676fe0b79db5fd33ef6e99ea0986738ba9)

[rust-timer]

Finished benchmarking commit (efe988676fe0b79db5fd33ef6e99ea0986738ba9): comparison URL.

Overall result: ❌ regressions - no action needed

Benchmarking this pull request likely means that it is perf-sensitive, so we're automatically marking it as not fit for rolling up. While you can manually mark this PR as fit for rollup, we strongly recommend not doing so since this PR may lead to changes in compiler perf.

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

Instruction count

This is a highly reliable metric that was used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	0.3%	[0.3%, 0.3%]	1
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	0.3%	[0.3%, 0.3%]	1

Max RSS (memory usage)

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

Cycles

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

[compiler-errors]

Cool, makes sense. Thanks!

r? @compiler-errors @bors r+

[bors]

📌 Commit 380ca0c has been approved by compiler-errors

It is now in the queue for this repository.

[bors]

⌛ Testing commit 380ca0c with merge f540a25...

[bors]

☀️ Test successful - checks-actions
Approved by: compiler-errors
Pushing f540a25 to master...

[bors]

☀️ Test successful - checks-actions
Approved by: compiler-errors
Pushing f540a25 to master...

[rust-timer]

Finished benchmarking commit (f540a25): comparison URL.

Overall result: ❌ regressions - no action needed

@rustbot label: -perf-regression

Instruction count

This is a highly reliable metric that was used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	0.3%	[0.3%, 0.3%]	1
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	0.3%	[0.3%, 0.3%]	1

Max RSS (memory usage)

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

Cycles

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