Update to LLVM head and mark various ptrs as nonnull. #14306
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These also need to be marked in trans/callee.rs for indirect calls. It seems marking the out pointer as |
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Does this help with #11751 at all? (I'd guess not, since the pointers are all nested there.) |
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I think it might help if LLVM learned to leveraged the |
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(actually it's not going to help either way) |
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I do think that there are many more venues of optimization possible here, but this should hopefully be a clear win in at least some situations. For example, this doesn't look like this handles structs which contain non-null pointers. Things like trait objects, tuples, slices, etc, will all benefit from that, but just attaching to a parameter may not be sufficient. This is merged upstream, however, and this definitely isn't detrimental, so let's push forward and see how far we can get with these optimizations! |
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cc #9546 |
src/librustc/middle/trans/base.rs
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This case doesn't get nocapture, but sometimes it may be able to?
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Nice cleanup! |
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r=me with a squash of the last three commits (they all seem very closely related) |
…uments and returns.
We can now mark arguments and returns as `nonnull` in LLVM. It's still somewhat limited by the fact that LLVM loses this information after inlining but it might help in certain cases.
fix block with no termination in or patterns fix rust-lang#14298
The `has_eligible_receiver()` function had been adapted *a minima* when the `sym::ControlFlow` diagnostic item has been added to rustc. This refactors the function content to make its meaning clearer. changelog: none
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We can now mark arguments and returns as
nonnullin LLVM. It's still somewhat limited by the fact that LLVM loses this information after inlining but it might help in certain cases.