Speedup copy_src_dirs in bootstrap
#145460
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Seems okay, but I'll need to take a closer look tmrw/Sunday. |
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@bors r+ rollup |
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Aur naur this has conflicts, r=me after rebase |
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Hemlo? @bors ping |
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@bors r- |
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The target is removed by `copy_link` too, so no need to duplicate the syscall.
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This PR was rebased onto a different master commit! Check out the changes with our |
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@bors r=jieyouxu |
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Zalathar
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Aug 16, 2025
…dirs, r=jieyouxu Speedup `copy_src_dirs` in bootstrap I was kinda offended by how slow it was. Just the `copy_src_dirs` part took ~3s locally in the `x dist rustc-src` step. In release mode it was just 1s, but that's kind of cheating (I wonder if we should build bootstrap in release mode on CI though...). Did some basic optimizations to bring it down to ~1s also in debug mode. Maybe it's overkill, due to rust-lang#145455. Up to you whether we should merge it or close it :) r? `@jieyouxu`
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Rollup of 11 pull requests Successful merges: - #139345 (Extend `QueryStability` to handle `IntoIterator` implementations) - #144838 (Fix outdated doc comment) - #145206 (Port `#[custom_mir(..)]` to the new attribute system) - #145208 (Implement declarative (`macro_rules!`) derive macros (RFC 3698)) - #145309 (Fix `-Zregparm` for LLVM builtins) - #145355 (Add codegen test for issue 122734) - #145420 (cg_llvm: Use LLVM-C bindings for `LLVMSetTailCallKind`, `LLVMGetTypeKind`) - #145451 (Add static glibc to the nix dev shell) - #145460 (Speedup `copy_src_dirs` in bootstrap) - #145476 (Fix typo in doc for library/std/src/fs.rs#set_permissions) - #145485 (Fix deprecation attributes on foreign statics) r? `@ghost` `@rustbot` modify labels: rollup
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Aug 17, 2025
Rollup of 11 pull requests Successful merges: - #139345 (Extend `QueryStability` to handle `IntoIterator` implementations) - #144838 (Fix outdated doc comment) - #145206 (Port `#[custom_mir(..)]` to the new attribute system) - #145208 (Implement declarative (`macro_rules!`) derive macros (RFC 3698)) - #145309 (Fix `-Zregparm` for LLVM builtins) - #145355 (Add codegen test for issue 122734) - #145420 (cg_llvm: Use LLVM-C bindings for `LLVMSetTailCallKind`, `LLVMGetTypeKind`) - #145451 (Add static glibc to the nix dev shell) - #145460 (Speedup `copy_src_dirs` in bootstrap) - #145476 (Fix typo in doc for library/std/src/fs.rs#set_permissions) - #145485 (Fix deprecation attributes on foreign statics) r? `@ghost` `@rustbot` modify labels: rollup
Zalathar
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Aug 17, 2025
…dirs, r=jieyouxu Speedup `copy_src_dirs` in bootstrap I was kinda offended by how slow it was. Just the `copy_src_dirs` part took ~3s locally in the `x dist rustc-src` step. In release mode it was just 1s, but that's kind of cheating (I wonder if we should build bootstrap in release mode on CI though...). Did some basic optimizations to bring it down to ~1s also in debug mode. Maybe it's overkill, due to rust-lang#145455. Up to you whether we should merge it or close it :) r? ``@jieyouxu``
bors
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Aug 17, 2025
Rollup of 10 pull requests Successful merges: - #140794 (Add information about group a lint belongs to) - #144476 (rustdoc-search: search backend with partitioned suffix tree) - #144838 (Fix outdated doc comment) - #145206 (Port `#[custom_mir(..)]` to the new attribute system) - #145208 (Implement declarative (`macro_rules!`) derive macros (RFC 3698)) - #145420 (cg_llvm: Use LLVM-C bindings for `LLVMSetTailCallKind`, `LLVMGetTypeKind`) - #145451 (Add static glibc to the nix dev shell) - #145460 (Speedup `copy_src_dirs` in bootstrap) - #145476 (Fix typo in doc for library/std/src/fs.rs#set_permissions) - #145485 (Fix deprecation attributes on foreign statics) r? `@ghost` `@rustbot` modify labels: rollup
Zalathar
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Aug 17, 2025
…dirs, r=jieyouxu Speedup `copy_src_dirs` in bootstrap I was kinda offended by how slow it was. Just the `copy_src_dirs` part took ~3s locally in the `x dist rustc-src` step. In release mode it was just 1s, but that's kind of cheating (I wonder if we should build bootstrap in release mode on CI though...). Did some basic optimizations to bring it down to ~1s also in debug mode. Maybe it's overkill, due to rust-lang#145455. Up to you whether we should merge it or close it :) r? ```@jieyouxu```
Zalathar
added a commit
to Zalathar/rust
that referenced
this pull request
Aug 17, 2025
…dirs, r=jieyouxu Speedup `copy_src_dirs` in bootstrap I was kinda offended by how slow it was. Just the `copy_src_dirs` part took ~3s locally in the `x dist rustc-src` step. In release mode it was just 1s, but that's kind of cheating (I wonder if we should build bootstrap in release mode on CI though...). Did some basic optimizations to bring it down to ~1s also in debug mode. Maybe it's overkill, due to rust-lang#145455. Up to you whether we should merge it or close it :) r? `````@jieyouxu`````
bors
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Aug 17, 2025
Rollup of 10 pull requests Successful merges: - #144476 (rustdoc-search: search backend with partitioned suffix tree) - #144838 (Fix outdated doc comment) - #145206 (Port `#[custom_mir(..)]` to the new attribute system) - #145208 (Implement declarative (`macro_rules!`) derive macros (RFC 3698)) - #145420 (cg_llvm: Use LLVM-C bindings for `LLVMSetTailCallKind`, `LLVMGetTypeKind`) - #145451 (Add static glibc to the nix dev shell) - #145460 (Speedup `copy_src_dirs` in bootstrap) - #145476 (Fix typo in doc for library/std/src/fs.rs#set_permissions) - #145485 (Fix deprecation attributes on foreign statics) - #145489 (library: Migrate from `cfg_if` to `cfg_select`) r? `@ghost` `@rustbot` modify labels: rollup
bors
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Aug 17, 2025
Rollup of 9 pull requests Successful merges: - #144476 (rustdoc-search: search backend with partitioned suffix tree) - #144838 (Fix outdated doc comment) - #145206 (Port `#[custom_mir(..)]` to the new attribute system) - #145208 (Implement declarative (`macro_rules!`) derive macros (RFC 3698)) - #145420 (cg_llvm: Use LLVM-C bindings for `LLVMSetTailCallKind`, `LLVMGetTypeKind`) - #145451 (Add static glibc to the nix dev shell) - #145460 (Speedup `copy_src_dirs` in bootstrap) - #145476 (Fix typo in doc for library/std/src/fs.rs#set_permissions) - #145485 (Fix deprecation attributes on foreign statics) r? `@ghost` `@rustbot` modify labels: rollup
Zalathar
added a commit
to Zalathar/rust
that referenced
this pull request
Aug 17, 2025
…dirs, r=jieyouxu Speedup `copy_src_dirs` in bootstrap I was kinda offended by how slow it was. Just the `copy_src_dirs` part took ~3s locally in the `x dist rustc-src` step. In release mode it was just 1s, but that's kind of cheating (I wonder if we should build bootstrap in release mode on CI though...). Did some basic optimizations to bring it down to ~1s also in debug mode. Maybe it's overkill, due to rust-lang#145455. Up to you whether we should merge it or close it :) r? ``````@jieyouxu``````
bors
added a commit
that referenced
this pull request
Aug 17, 2025
Rollup of 10 pull requests Successful merges: - #144838 (Fix outdated doc comment) - #145206 (Port `#[custom_mir(..)]` to the new attribute system) - #145208 (Implement declarative (`macro_rules!`) derive macros (RFC 3698)) - #145309 (Fix `-Zregparm` for LLVM builtins) - #145355 (Add codegen test for issue 122734) - #145420 (cg_llvm: Use LLVM-C bindings for `LLVMSetTailCallKind`, `LLVMGetTypeKind`) - #145451 (Add static glibc to the nix dev shell) - #145460 (Speedup `copy_src_dirs` in bootstrap) - #145476 (Fix typo in doc for library/std/src/fs.rs#set_permissions) - #145485 (Fix deprecation attributes on foreign statics) r? `@ghost` `@rustbot` modify labels: rollup
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I was kinda offended by how slow it was. Just the
copy_src_dirspart took ~3s locally in thex dist rustc-srcstep. In release mode it was just 1s, but that's kind of cheating (I wonder if we should build bootstrap in release mode on CI though...).Did some basic optimizations to bring it down to ~1s also in debug mode.
Maybe it's overkill, due to #145455. Up to you whether we should merge it or close it :)
r? @jieyouxu