Rollup of 8 pull requests #105760
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Rollup of 8 pull requests #105760
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This option will output some stats from the monomorphization collection pass to a file, to show estimated sizes from each instantiation.
It's unused.
`SimplifiedTypeGen<DefId>` is the only instantiation used, so we don't need the generic parameter.
When `with_forced_trimmed_paths` is used, only print filename and start of the closure's span, to reduce their verbosity.
Do not say "Type changed to X here" when the only difference is caused by lifetimes.
Start improving monomorphization items stats As described in [this zulip discussion](https://rust-lang.zulipchat.com/#narrow/stream/247081-t-compiler.2Fperformance/topic/Compile-time.20case-study.3A.20AWS.20crates/near/314560832), some stats about monomorphization collection would be interesting to have, in a different form than `-Zprint-mono-items`: to have some visibility into the cost of the mono items, we'd like to know how many are instantiated and what is their estimated size. That can be a proxy to analyze sources of slow compile times, although in the future, we'd also like to add more realistic stats from the actual backend's lowering. This PR adds a new `-Z dump-mono-stats` flag which will output some stats in a `{crate_name}.mono-items.md` file (the flag optionally takes an output directory parameter, for easier use within a workspace than printing to stdout). For example, ```rust fn compute<T>(collection: Vec<T>) -> usize { collection.len() + 19 - 0 * 9 - 18 - 1 * 1 // random code to increase the function's size } fn main() { dbg!(compute(vec![0u8, 1, 2])); dbg!(compute(vec![0u64, 1, 2])); dbg!(compute(vec!["0", "1", "2", "3"])); } ``` will output a file with this markdown table (abridged for readability), for a debug build: | Item | Instantiation count | Estimated Cost Per Instantiation | Total Estimated Cost | | --- | ---: | ---: | ---: | | alloc::alloc::box_free | 3 | 122 | 366 | | std::alloc::Global::alloc_impl | 1 | 284 | 284 | | alloc::raw_vec::RawVec::<T, A>::current_memory | 3 | 82 | 246 | | std::ptr::align_offset | 1 | 222 | 222 | | std::slice::hack::into_vec | 3 | 67 | 201 | | <std::vec::Vec<T, A> as std::ops::Drop>::drop | 3 | 66 | 198 | | std::ptr::mut_ptr::<impl *mut T>::is_null | 4 | 47 | 188 | | main | 1 | 163 | 163 | | std::ptr::NonNull::<T>::new_unchecked | 4 | 37 | 148 | ... <details> <summary>Click for full output</summary> | Item | Instantiation count | Estimated Cost Per Instantiation | Total Estimated Cost | | --- | ---: | ---: | ---: | | alloc::alloc::box_free | 3 | 122 | 366 | | std::alloc::Global::alloc_impl | 1 | 284 | 284 | | alloc::raw_vec::RawVec::<T, A>::current_memory | 3 | 82 | 246 | | std::ptr::align_offset | 1 | 222 | 222 | | std::slice::hack::into_vec | 3 | 67 | 201 | | <std::vec::Vec<T, A> as std::ops::Drop>::drop | 3 | 66 | 198 | | std::ptr::mut_ptr::<impl *mut T>::is_null | 4 | 47 | 188 | | main | 1 | 163 | 163 | | std::ptr::NonNull::<T>::new_unchecked | 4 | 37 | 148 | | std::boxed::Box::<T, A>::into_unique | 3 | 48 | 144 | | std::boxed::Box::<T, A>::leak | 3 | 39 | 117 | | std::alloc::Layout::array::inner | 1 | 107 | 107 | | std::ptr::align_offset::mod_inv | 1 | 103 | 103 | | std::boxed::Box::<T, A>::into_raw_with_allocator | 3 | 31 | 93 | | std::fmt::Arguments::<'a>::new_v1 | 1 | 80 | 80 | | <alloc::raw_vec::RawVec<T, A> as std::ops::Drop>::drop | 3 | 26 | 78 | | alloc::raw_vec::RawVec::<T, A>::from_raw_parts_in | 3 | 26 | 78 | | alloc::alloc::exchange_malloc | 1 | 75 | 75 | | std::ptr::const_ptr::<impl *const T>::is_null | 1 | 75 | 75 | | std::ptr::const_ptr::<impl *const T>::is_aligned_to | 1 | 64 | 64 | | compute | 3 | 20 | 60 | | std::ptr::const_ptr::<impl *const T>::align_offset | 1 | 55 | 55 | | std::ptr::read | 1 | 52 | 52 | | <std::alloc::Global as std::alloc::Allocator>::deallocate | 1 | 50 | 50 | | std::ptr::mut_ptr::<impl *mut T>::guaranteed_eq | 1 | 48 | 48 | | std::fmt::ArgumentV1::<'a>::new_display | 2 | 22 | 44 | | std::ptr::Alignment::new_unchecked | 1 | 42 | 42 | | core::fmt::num::<impl std::fmt::Debug for usize>::fmt | 1 | 40 | 40 | | std::result::Result::<T, E>::unwrap_unchecked | 1 | 37 | 37 | | std::cmp::Ord::min | 1 | 32 | 32 | | std::cmp::impls::<impl std::cmp::Ord for usize>::cmp | 1 | 31 | 31 | | std::intrinsics::is_aligned_and_not_null | 1 | 27 | 27 | | std::rt::lang_start | 1 | 27 | 27 | | std::ptr::NonNull::<T>::new | 1 | 24 | 24 | | std::fmt::ArgumentV1::<'a>::new_debug | 1 | 22 | 22 | | std::fmt::Arguments::<'a>::new_v1_formatted | 1 | 19 | 19 | | std::rt::lang_start::{closure#0} | 1 | 17 | 17 | | std::sys_common::backtrace::__rust_begin_short_backtrace | 1 | 16 | 16 | | std::slice::<impl [T]>::into_vec | 3 | 5 | 15 | | <std::ptr::NonNull<T> as std::convert::From<std::ptr::Unique<T>>>::from | 1 | 14 | 14 | | <&T as std::fmt::Debug>::fmt | 1 | 12 | 12 | | <&T as std::fmt::Display>::fmt | 1 | 12 | 12 | | std::vec::Vec::<T, A>::len | 3 | 2 | 6 | | <T as std::convert::Into<U>>::into | 1 | 5 | 5 | | <T as std::convert::From<T>>::from | 1 | 2 | 2 | | <() as std::process::Termination>::report | 1 | 2 | 2 | | std::hint::unreachable_unchecked | 1 | 2 | 2 | | core::fmt::UnsafeArg::new | 1 | 1 | 1 | </details> Since we discussed it together, r? `@wesleywiser.`
Point at method chains on `E0271` errors Follow up to rust-lang#105332. Fix rust-lang#33941. CC rust-lang#9082. r? `@oli-obk`
…-errors Suggest constraining type parameter with `Clone` Fix rust-lang#34896.
Don't create dummy if val has escaping bounds var Skips creating/pushing obligations if val has escaping bounds vars. Fixes rust-lang#105689
Tweak output for bare `dyn Trait` in arguments Fix rust-lang#35825.
…-link-to-css-var, r=notriddle Migrate Jump to def links background to CSS variable It's already tested in `src/test/rustdoc-gui/jump-to-def-background.goml`. r? `@notriddle`
…s, r=lcnr `SimplifiedType` cleanups r? `@lcnr`
…mpiler-errors Move `TypeckResults` to separate module `ty::context` is really big and the typeck results aren't directly related to `TyCtxt`, so move them to a separate module. Also contains a small drive-by macro "improvement".
rustbot
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@bors r+ rollup=never p=8 |
bors
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☀️ Test successful - checks-actions |
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📌 Perf builds for each rolled up PR: previous master: ec56537c43 In the case of a perf regression, run the following command for each PR you suspect might be the cause: |
This was referenced Dec 16, 2022
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Finished benchmarking commit (7a6af27): comparison URL. Overall result: ❌✅ regressions and improvements - no action needed@rustbot label: -perf-regression Instruction countThis is a highly reliable metric that was used to determine the overall result at the top of this comment.
Max RSS (memory usage)ResultsThis is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.
CyclesThis benchmark run did not return any relevant results for this metric. |
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Successful merges:
E0271errors #105674 (Point at method chains onE0271errors)Clone#105679 (Suggest constraining type parameter withClone)dyn Traitin arguments #105727 (Tweak output for baredyn Traitin arguments)SimplifiedTypecleanups #105743 (SimplifiedTypecleanups)TypeckResultsto separate module #105758 (MoveTypeckResultsto separate module)Failed merges:
r? @ghost
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