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Implement return-by-reference #918

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marijnh opened this issue Sep 14, 2011 · 0 comments
Closed

Implement return-by-reference #918

marijnh opened this issue Sep 14, 2011 · 0 comments

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@marijnh
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marijnh commented Sep 14, 2011

See https://mail.mozilla.org/pipermail/rust-dev/2011-July/000634.html for context. Opening this to track progress on the feature.
@ghost ghost assigned marijnh Sep 14, 2011
marijnh added a commit that referenced this issue Sep 14, 2011
@marijnh
Add support for basic return-by-alias to trans
93d2a4f 
Issue #918
marijnh added a commit that referenced this issue Sep 14, 2011
@marijnh
Disallow implicit arg copying when the function returns a ref
7d69712 
Issue #918
marijnh added a commit that referenced this issue Sep 14, 2011
@marijnh
Accept returning refs rooted in an arg from a by-ref funtion
c6619f9 
Issue #918
marijnh added a commit that referenced this issue Sep 14, 2011
@marijnh
Prevent memory errors when returning references to temp args.
1cabe37 
Issue #918
marijnh added a commit that referenced this issue Sep 14, 2011
@marijnh
Add syntax and representation for return-by-mutably-rooted-ref
93de2f0 
This will be used in the near future to decide what can safely
be done with the returned reference.

Issue #918
marijnh added a commit that referenced this issue Sep 15, 2011
@marijnh
Add representation for by-ref let bindings
1cda74d 
Issue #918
marijnh added a commit that referenced this issue Sep 15, 2011
@marijnh
Implement basic checking of by-reference bindings
8aad161 
Issue #918
marijnh added a commit that referenced this issue Sep 15, 2011
@marijnh
Make trans understand by-ref bindings
d7a1d6a 
Issue #918
marijnh added a commit that referenced this issue Sep 15, 2011
@marijnh
Forbid assignment to by-reference bindings
25787bd 
Issue #918
marijnh added a commit that referenced this issue Sep 15, 2011
@marijnh
Make storing returned references in a by-reference local work
87fa389 
    fn f(a: {x: str}) -> &str {
        ret a.x;
    }

    fn main() {
        let x = {x: "hi"};
        let &y = f(x); // Look ma, no copy!
        log_err y;
    }

Issue #918.
marijnh added a commit that referenced this issue Sep 15, 2011
@marijnh
Overhaul alias-checking of blocks
75eee8b 
The set of active bindings has to be updated as by-reference locals are
encountered.

Issue #918
marijnh added a commit that referenced this issue Sep 15, 2011
@marijnh
Require the parameter that will be referenced to be noted
3abe367 
Issue #918
marijnh added a commit that referenced this issue Sep 15, 2011
@marijnh
Add tests for returning by reference
2917786 
Issue #918
marijnh added a commit that referenced this issue Sep 15, 2011
@marijnh
Generalize expression roots in alias analysis
b843cf2 
This allows calls-returning-a-reference to count as expression roots,
making it possible to return the result of such a call by reference.

Issue #918
marijnh added a commit that referenced this issue Sep 16, 2011
@marijnh
Change convention for specifying referenced argument
d7587c1 
It is now 1-based, rather than 0 based. (Seems more natural, and allows 0 to
be used to refer to self and maybe to closure.)

Also allows non-referenced args to be implicitly copied again.

Issue #918
@marijnh marijnh removed their assignment Jun 16, 2014
bors pushed a commit to rust-lang-ci/rust that referenced this issue Oct 26, 2020
@bjorn3
Merge pull request rust-lang#918 from bjorn3/incr_cache
c2962a6 
Implement incremental caching of object files
ZuseZ4 pushed a commit to EnzymeAD/rust that referenced this issue Mar 7, 2023
@wsmoses
Add forward bundle for allocations (rust-lang#918)
442f31d
coastalwhite pushed a commit to coastalwhite/rust that referenced this issue Aug 5, 2023
@dgbo @maomao194313
Implement prefetch hints for aarch64 (rust-lang#918)
b422b01 
Co-authored-by: Wang Maozhang <wangmaozhang@huawei.com>
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