Performance issue when analysing project with prinsfrank/standards

[ondrejmirtes]

Bug report

Repository: https://github.com/h4kuna/phpstan-long-run

Analysed file: https://github.com/h4kuna/phpstan-long-run/blob/main/src/test.php

Steps:

// 1. composer install
// 2. composer phpstan
//      - wait long time

// 3. let's comment part A
// 4. uncomment part B
// 5. remove phpstan cache
// 6. composer phpstan
//      - much faster!

Takes about 98 seconds on my machine.

Code snippet that reproduces the problem

No response

Expected output

Should be instant.

Did PHPStan help you today? Did it make you happy in any way?

No response

[ondrejmirtes]

/cc @staabm You might want to look into this :) Why exactly is it slow.

[mergeable]

This bug report is missing a link to reproduction at phpstan.org/try.

It will most likely be closed after manual review.

[staabm]

I can have a look this afternoon

[ondrejmirtes]

Thanks :)

[staabm]

the root cause of the problem is a explosion in enum-case-union-elements. still investigating...

https://blackfire.io/profiles/a352df89-1520-44e1-a5e7-1f031fffbc82/graph

[staabm]

6-8% faster by roave upstream change: Roave/BetterReflection#1410

[ondrejmirtes]

Fixed phpstan/phpstan-src#2985

[github-actions]

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