Add type flags support for Ty and Const late-bound variables

[compiler-errors]

I've been working on for<T> binders, and these will eventually be useful.

[rustbot]

r? @cjgillot

(rustbot has picked a reviewer for you, use r? to override)

[compiler-errors]

@bors try @rust-timer queue

[bors]

⌛ Trying commit d2ef902bd7dbc6ee89ea5efc685a6b3aa37149de with merge 0bc47f1d657456dfa37c363688b7d3f1b19ac8a0...

[bors]

☀️ Try build successful - checks-actions
Build commit: 0bc47f1d657456dfa37c363688b7d3f1b19ac8a0 (0bc47f1d657456dfa37c363688b7d3f1b19ac8a0)

[rust-timer]

Finished benchmarking commit (0bc47f1d657456dfa37c363688b7d3f1b19ac8a0): comparison URL.

Overall result: no relevant changes - 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 benchmark run did not return any relevant results for this metric.

Max RSS (memory usage)

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	3.3%	[3.3%, 3.3%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

Cycles

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

[cjgillot]

Could you elaborate the use case for these for<T> binders? Predicates only, or do you have plans to have them in types too?

[compiler-errors]

@cjgillot yeah, predicates are probably the only place they make sense in the language currently.

[cjgillot]

r=me with @fbstj's suggestion applied.

[compiler-errors]

@bors r=cjgillot

[bors]

📌 Commit 3c41003 has been approved by cjgillot

It is now in the queue for this repository.

[bors]

⌛ Testing commit 3c41003 with merge a8686e450a79735ad18881a34475383b5dcd059f...

[rust-log-analyzer]

A job failed! Check out the build log: (web) (plain)

Click to see the possible cause of the failure (guessed by this bot)

[bors]

💥 Test timed out

[compiler-errors]

@bors retry

That test timeout looks spurious?

[bors]

⌛ Testing commit 3c41003 with merge e6485ed...

[bors]

☀️ Test successful - checks-actions
Approved by: cjgillot
Pushing e6485ed to master...

[rust-timer]

Finished benchmarking commit (e6485ed): comparison URL.

Overall result: ✅ improvements - 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
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-1.3%	[-1.3%, -1.3%]	1
All ❌✅ (primary)	-	-	0

Max RSS (memory usage)

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

Cycles

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-2.6%	[-3.0%, -2.1%]	3
All ❌✅ (primary)	-	-	0