Significant increase in compilation time on new version

[zirill]

I noticed that there is a dramatic increase in time with each update.

rustc 1.59.0-nightly (928783d 2021-12-11) (or 1.57.0 ~)
Finished release [optimized] target(s) in 25m 28s opt-level=s
Finished release [unoptimized] target(s) in 24m 45s opt-level=0

(in docker 1.56.0)
Finished release [unoptimized] target(s) in 9m 45s opt-level=0
Finished release [unoptimized] target(s) in 8m 42s opt-level=0
Finished release [optimized] target(s) in 10m 16s opt-level=s

+--------------------------------------------------+-----------+-----------------+----------+------------+---------------------------------+
| Item                                             | Self time | % of total time | Time     | Item count | Incremental result hashing time |
+--------------------------------------------------+-----------+-----------------+----------+------------+---------------------------------+
| evaluate_obligation                              | 1082.39s  | 83.132          | 1082.48s | 18959      | 3.64ms                          |
+--------------------------------------------------+-----------+-----------------+----------+------------+---------------------------------+
| codegen_fulfill_obligation                       | 110.69s   | 8.501           | 1179.24s | 6414       | 4.21ms                          |
+--------------------------------------------------+-----------+-----------------+----------+------------+---------------------------------+
| normalize_projection_ty                          | 63.77s    | 4.898           | 63.81s   | 3456       | 10.11ms                         |
+--------------------------------------------------+-----------+-----------------+----------+------------+---------------------------------+
| LLVM_passes                                      | 17.57s    | 1.350           | 17.57s   | 1          | 0.00ns                          |
+--------------------------------------------------+-----------+-----------------+----------+------------+---------------------------------+
| LLVM_module_codegen_emit_obj                     | 9.86s     | 0.757           | 9.86s    | 257        | 0.00ns                          |
+--------------------------------------------------+-----------+-----------------+----------+------------+---------------------------------+
| run_linker                                       | 5.76s     | 0.443           | 5.76s    | 1          | 0.00ns                          |

#91809 (comment)

[Aaron1011]

PR #90423 was just merged, so tomorrow's nightly should have better performance

[zirill]

Thank you fantastic!
when will the version be released?

nightly-x86_64-unknown-linux-gnu unchanged - rustc 1.59.0-nightly (6bda5b3 2021-12-12)
Finished release [optimized] target(s) in 2m 57s opt-level=s

[Aaron1011]

It should be included in the 1.59.0 release (which will be released on February 24).

[apiraino]

removing prioritization label as per Zulip discussion.

@rustbot label -I-prioritize

[apiraino]

I assume this is now fixed 🙂 so closing