bors f9b644636f Auto merge of #117435 - SparrowLii:nightly_parallel, r=oli-obk,davidtwco ...

enable parallel rustc front end in nightly builds

Refers to the [MCP](https://github.com/rust-lang/compiler-team/issues/681), this pr does:
1. Enable the parallel front end in nightly builds, and keep the default number of threads as 1. Then users can use the parallel rustc front end via -Z threads=n option.

2. Set it up to serial front end for beta/stable builds via bootstrap.

3. Switch over the alt builders from parallel rustc to serial, so we have artifacts without parallel to test against the artifacts with parallel.

r? `@oli-obk`

cc `@cjgillot` `@nnethercote` `@bjorn3` `@Kobzol`

2023-11-06 07:41:22 +00:00

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base_n

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binary_search_util

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fingerprint

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flock

added support for GNU/Hurd

2023-09-21 17:31:25 +02:00

graph

Remove unused dominator iterator

2023-10-10 21:39:59 +02:00

intern

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obligation_forest

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owned_slice

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profiling

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sip128

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small_c_str

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snapshot_map

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sorted_map

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sso

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stable_hasher

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sync

Use filter_map in try_par_for_each_in

2023-11-03 09:17:16 -07:00

tagged_ptr

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tiny_list

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transitive_relation

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aligned.rs

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atomic_ref.rs

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base_n.rs

[rustc_data_structures][base_n][perf] Remove unnecessary utf8 check.

2023-08-01 11:10:17 -07:00

captures.rs

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fingerprint.rs

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flat_map_in_place.rs

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flock.rs

Initiate the inner usage of cfg_match

2023-10-19 20:18:51 -03:00

frozen.rs

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fx.rs

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hashes.rs

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intern.rs

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jobserver.rs

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lib.rs

Initiate the inner usage of cfg_match

2023-10-19 20:18:51 -03:00

macros.rs

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marker.rs

use portable AtomicU64 for powerPC and MIPS

2023-11-06 09:58:51 +08:00

memmap.rs

elaborate a bit on the (lack of) safety in 'Mmap::map'

2023-08-19 12:50:26 +02:00

owned_slice.rs

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profiling.rs

Initiate the inner usage of cfg_match

2023-10-19 20:18:51 -03:00

sharded.rs

Remove the LockMode enum and dispatch

2023-09-08 10:15:12 +02:00

sip128.rs

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small_c_str.rs

Add OwnedTargetMachine to manage llvm:TargetMachine. Uses pointers

2023-09-24 21:11:37 +02:00

sorted_map.rs

[rustc_data_structures] Simplify SortedMap::insert.

2023-07-31 16:58:04 -07:00

stable_hasher.rs

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stack.rs

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steal.rs

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svh.rs

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sync.rs

use portable AtomicU64 for powerPC and MIPS

2023-11-06 09:58:51 +08:00

tagged_ptr.rs

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temp_dir.rs

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tiny_list.rs

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transitive_relation.rs

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unhash.rs

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unord.rs

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vec_linked_list.rs

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work_queue.rs

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