Reduce compile time of rustbuild #92297
Merged
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
bjorn3
added
T-compiler
|
(rust-highfive has picked a reviewer for you, use r? to override) |
rust-highfive
added
the
S-waiting-on-review
jyn514
approved these changes
Dec 27, 2021
Mark-Simulacrum
added
S-waiting-on-author
|
☔ The latest upstream changes (presumably #92465) made this pull request unmergeable. Please resolve the merge conflicts. |
Rustbuild already depends on once_cell which in the future can be replaced with std::lazy::Lazy.
The task of the macro is simple enough that a decl macro is almost ten times shorter than the original proc macro. The proc macro is 159 lines while the decl macro is just 18 lines. This reduces the amount of dependencies of rustbuild from 45 to 37. It also slight reduces compilation time from 47s to 44s for debug builds.
This slightly improves compilation time by reducing linking time (saving about a 1/10 of the the total compilation time after changing rustbuild) and slightly reduces disk usage (from 16MB for the rustc wrapper to 4MB).
bjorn3
force-pushed
the
smaller_bootstrap
branch
from
97f9282
to
947e948
Compare
|
Rebased and addressed review comments. |
bjorn3
added
S-waiting-on-review
|
Removed some dead code. |
|
@bors r+ rollup |
|
📌 Commit 7ea6e71 has been approved by |
bors
added
S-waiting-on-bors
bors
added a commit
to rust-lang-ci/rust
that referenced
this pull request
Jan 2, 2022
…askrgr Rollup of 7 pull requests Successful merges: - rust-lang#84083 (Clarify the guarantees that ThreadId does and doesn't make.) - rust-lang#91593 (Remove unnecessary bounds for some Hash{Map,Set} methods) - rust-lang#92297 (Reduce compile time of rustbuild) - rust-lang#92332 (Add test for where clause order) - rust-lang#92438 (Enforce formatting for rustc_codegen_cranelift) - rust-lang#92463 (Remove pronunciation guide from Vec<T>) - rust-lang#92468 (Emit an error for `--cfg=)`) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Best reviewed commit by commit. The
ignorecrate and it's dependencies are probably responsible for the majority of the compile time after this PR.cc @jyn514 as you got a couple of open rustbuild PR.