rustc_borrowck memory management tweaks#131225
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The `regioncx` and `borrow_set` fields can be references instead of `Rc`. They use the existing `'a` lifetime. This avoids some heap allocations and is a bit simpler.
Refcounting isn't needed.
It can own these two fields.
Either `&T` or `Rc<T>` is preferable.
By making it own two of its fields.
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klensy
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| infcx, | ||
| param_env, | ||
| implicit_region_bound, | ||
| universal_regions, |
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Rc clone()'s better be Rc::clone, so whenever field refactored out of Rc, compiler will warn, instead of wasting clone()'s.
Actually, i want lint for it :-) : https://rust-lang.github.io/rust-clippy/master/index.html#/clone_on_ref_ptr
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I’m aware and prefer Rc::clone, but it’s fine until the lint is used.
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Submitted #131375, but is some discussion required before enabling it in CI?
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…kingjubilee Rollup of 7 pull requests Successful merges: - rust-lang#128721 (Don't allow the `#[pointee]` attribute where it doesn't belong) - rust-lang#130479 (skip in-tree compiler build for llvm-bitcode-linker if ci-rustc is on) - rust-lang#130899 (Couple of changes to make it easier to compile rustc for wasm) - rust-lang#131225 (`rustc_borrowck` memory management tweaks) - rust-lang#131351 (Remove valgrind test suite and support from compiletest, bootstrap and opt-dist) - rust-lang#131359 (Fix used_underscore_binding in rustc_serialize) - rust-lang#131367 (Mark Boxy as on vacation) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup merge of rust-lang#131225 - nnethercote:rustc_borrowck-mm, r=lqd `rustc_borrowck` memory management tweaks Minor cleanups in `rustc_borrowck` relating to memory management. r? `@lqd`
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compiler: apply clippy::clone_on_ref_ptr for CI Apply lint https://rust-lang.github.io/rust-clippy/master/index.html#/clone_on_ref_ptr for compiler, also see rust-lang#131225 (comment). Some Arc's can be misplaced with Lrc's, sorry. https://rust-lang.zulipchat.com/#narrow/channel/131828-t-compiler/topic/enable.20more.20clippy.20lints.20for.20compiler.20.28and.5Cor.20std.29
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compiler: apply clippy::clone_on_ref_ptr for CI Apply lint https://rust-lang.github.io/rust-clippy/master/index.html#/clone_on_ref_ptr for compiler, also see rust-lang#131225 (comment). Some Arc's can be misplaced with Lrc's, sorry. https://rust-lang.zulipchat.com/#narrow/channel/131828-t-compiler/topic/enable.20more.20clippy.20lints.20for.20compiler.20.28and.5Cor.20std.29
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compiler: apply clippy::clone_on_ref_ptr for CI Apply lint https://rust-lang.github.io/rust-clippy/master/index.html#/clone_on_ref_ptr for compiler, also see rust-lang#131225 (comment). Some Arc's can be misplaced with Lrc's, sorry. https://rust-lang.zulipchat.com/#narrow/channel/131828-t-compiler/topic/enable.20more.20clippy.20lints.20for.20compiler.20.28and.5Cor.20std.29
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compiler: apply clippy::clone_on_ref_ptr for CI Apply lint https://rust-lang.github.io/rust-clippy/master/index.html#/clone_on_ref_ptr for compiler, also see rust-lang#131225 (comment). Some Arc's can be misplaced with Lrc's, sorry. https://rust-lang.zulipchat.com/#narrow/channel/131828-t-compiler/topic/enable.20more.20clippy.20lints.20for.20compiler.20.28and.5Cor.20std.29
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Rollup merge of rust-lang#131375 - klensy:clone_on_ref_ptr, r=cjgillot compiler: apply clippy::clone_on_ref_ptr for CI Apply lint https://rust-lang.github.io/rust-clippy/master/index.html#/clone_on_ref_ptr for compiler, also see rust-lang#131225 (comment). Some Arc's can be misplaced with Lrc's, sorry. https://rust-lang.zulipchat.com/#narrow/channel/131828-t-compiler/topic/enable.20more.20clippy.20lints.20for.20compiler.20.28and.5Cor.20std.29
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compiler: apply clippy::clone_on_ref_ptr for CI Apply lint https://rust-lang.github.io/rust-clippy/master/index.html#/clone_on_ref_ptr for compiler, also see rust-lang/rust#131225 (comment). Some Arc's can be misplaced with Lrc's, sorry. https://rust-lang.zulipchat.com/#narrow/channel/131828-t-compiler/topic/enable.20more.20clippy.20lints.20for.20compiler.20.28and.5Cor.20std.29
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compiler: apply clippy::clone_on_ref_ptr for CI Apply lint https://rust-lang.github.io/rust-clippy/master/index.html#/clone_on_ref_ptr for compiler, also see rust-lang/rust#131225 (comment). Some Arc's can be misplaced with Lrc's, sorry. https://rust-lang.zulipchat.com/#narrow/channel/131828-t-compiler/topic/enable.20more.20clippy.20lints.20for.20compiler.20.28and.5Cor.20std.29
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Minor cleanups in
rustc_borrowckrelating to memory management.r? @lqd