-
Notifications
You must be signed in to change notification settings - Fork 348
New issue
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.
Already on GitHub? Sign in to your account
Miri subtree instructions #2561
Conversation
Wouldn't it be easier to make this a regular Miri PR? |
|
||
Every time: | ||
|
||
Note: the first time you run this, `git subtree` builds a cache and this command may thusly take an hour or so. |
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
An hour?!??? :(
I have many rustc checkouts. How can I make it share the cache between my checkouts?
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
I have no idea, this worked faster for clippy and other repos...
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
If you use git worktree
for creating the extra git checkouts I believe the subtree cache is shared. Not entirely sure though.
I have no idea, this worked faster for clippy and other repos...
The first common commit between rust and miri is from 2018 (when rust-lang/rust#46882 merged it into rustc as const eval engine). Git subtree has to walk all commits since then I believe.
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
yea, that's not really useful... why doesn't it just walk the subtree_add_commit..HEAD
range and rewrite those commits...
git remote add miri https://github.com/rust-lang/miri.git | ||
``` | ||
|
||
Every time: |
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
Does this also need that cache or is this always fast(er)?
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
this is always fast, just a few seconds at most, does not get slower with time
it is a regular miri PR, there was just a collision with the miri subtree push that has been running for 3h now 😱 idk what's going on (yes I do have the patch). And that push was started with the same name as the previous branch name, and would have failed at the end. I am currently figuring out what the perf issue is, and why I didn't see it while working on the PR |
@rustbot author |
☔ The latest upstream changes (presumably #2568) made this pull request unmergeable. Please resolve the merge conflicts. |
supercedes #2560 (sorry for all the PRs, I needed the branch clean as I was git subtree pushing to it)