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Matthias Krüger 713c852a2f
Rollup merge of #117671 - kjetilkjeka:nvptx_c_abi_avoid_direct, r=davidtwco 
NVPTX: Avoid PassMode::Direct for args in C abi

Fixes #117480

I must admit that I'm confused about `PassMode` altogether, is there a good sum-up threads for this anywhere? I'm especially confused about how "indirect" and "byval" goes together. To me it seems like "indirect" basically means "use a indirection through a pointer", while "byval" basically means "do not use indirection through a pointer".

The return used to keep `PassMode::Direct` for small aggregates. It turns out that `make_indirect` messes up the tests and one way to fix it is to keep `PassMode::Direct` for all aggregates. I have mostly seen this PassMode mentioned for args. Is it also a problem for returns? When experimenting with `byval` as an alternative i ran into [this assert](61a3eea804/compiler/rustc_codegen_llvm/src/abi.rs (L463C22-L463C22))

I have added tests for the same kind of types that is already tested for the "ptx-kernel" abi. The tests cannot be enabled until something like #117458 is completed and merged.

CC: ``@RalfJung`` since you seem to be the expert on this and have already helped me out tremendously

CC: ``@RDambrosio016`` in case this influence your work on `rustc_codegen_nvvm`

``@rustbot`` label +O-NVPTX
2024-05-28 18:04:31 +02:00
.github Rollup merge of #123492 - lcnr:master, r=davidtwco 2024-05-21 20:28:47 +02:00
.reuse std: move Once implementations to sys 2024-03-12 15:41:06 +01:00
compiler Rollup merge of #117671 - kjetilkjeka:nvptx_c_abi_avoid_direct, r=davidtwco 2024-05-28 18:04:31 +02:00
library Rollup merge of #125647 - tspiteri:track-lazy_cell_consume, r=workingjubilee 2024-05-28 02:07:49 -07:00
LICENSES Add missing CC-BY-SA-4.0. 2023-11-27 11:03:53 +00:00
src Create const block DefIds in typeck instead of ast lowering 2024-05-28 13:38:43 +00:00
tests Rollup merge of #117671 - kjetilkjeka:nvptx_c_abi_avoid_direct, r=davidtwco 2024-05-28 18:04:31 +02:00
.editorconfig Only use max_line_length = 100 for *.rs 2023-07-10 15:18:36 -07:00
.git-blame-ignore-revs Ignore compiletest test directive migration commits 2024-02-22 18:55:02 +00:00
.gitattributes Rename config.toml.example to config.example.toml 2023-03-11 14:10:00 -08:00
.gitignore don't globally ignore rustc-ice files 2023-09-16 09:44:44 +02:00
.gitmodules refactor: add rustc-perf submodule to src/tools 2024-05-20 14:56:49 +00:00
.mailmap Rollup merge of #123873 - cuviper:mailmap, r=lqd 2024-04-13 00:18:47 -04:00
Cargo.lock Rollup merge of #125089 - Urgau:non_local_def-suggestions, r=estebank 2024-05-28 02:07:47 -07:00
Cargo.toml Remove the expand-yaml-anchors tool 2024-04-29 21:33:17 +02:00
CODE_OF_CONDUCT.md Remove the code of conduct; instead link https://www.rust-lang.org/conduct.html 2019-10-05 22:55:19 +02:00
config.example.toml Remove deprecated field dist.missing-tools 2024-05-25 10:35:07 +03:00
configure Ensure ./configure works when configure.py path contains spaces 2024-02-16 18:57:22 +00:00
CONTRIBUTING.md fix: Update CONTRIBUTING.md recommend -> recommended 2023-11-16 23:57:09 +05:30
COPYRIGHT Update COPYRIGHT file 2022-10-30 10:23:14 -04:00
INSTALL.md chore: fix some comments 2024-03-27 22:32:53 +08:00
LICENSE-APACHE Remove appendix from LICENCE-APACHE 2019-12-30 14:25:53 +00:00
LICENSE-MIT LICENSE-MIT: Remove inaccurate (misattributed) copyright notice 2017-07-26 16:51:58 -07:00
README.md Use SVG logos in the README.md. 2024-04-03 19:48:20 +02:00
RELEASES.md release notes 1.78: add link to interior-mut breaking change 2024-05-03 14:56:05 +02:00
rust-bors.toml Increase timeout for new bors bot 2024-03-13 08:31:07 +01:00
rustfmt.toml refactor: add rustc-perf submodule to src/tools 2024-05-20 14:56:49 +00:00
triagebot.toml Rollup merge of #125566 - camelid:notify-accepted, r=GuillaumeGomez 2024-05-26 15:28:29 -07:00
x Make x capable of resolving symlinks 2023-10-14 17:53:33 +03:00
x.ps1 use & instead of start-process in x.ps1 2023-12-09 09:46:16 -05:00
x.py Fix recent python linting errors 2023-08-02 04:40:28 -04:00

README.md

This is the main source code repository for Rust. It contains the compiler, standard library, and documentation.

Why Rust?

  • Performance: Fast and memory-efficient, suitable for critical services, embedded devices, and easily integrate with other languages.

  • Reliability: Our rich type system and ownership model ensure memory and thread safety, reducing bugs at compile-time.

  • Productivity: Comprehensive documentation, a compiler committed to providing great diagnostics, and advanced tooling including package manager and build tool (Cargo), auto-formatter (rustfmt), linter (Clippy) and editor support (rust-analyzer).

Quick Start

Read "Installation" from The Book.

Installing from Source

If you really want to install from source (though this is not recommended), see INSTALL.md.

Getting Help

See https://www.rust-lang.org/community for a list of chat platforms and forums.

Contributing

See CONTRIBUTING.md.

License

Rust is primarily distributed under the terms of both the MIT license and the Apache License (Version 2.0), with portions covered by various BSD-like licenses.

See LICENSE-APACHE, LICENSE-MIT, and COPYRIGHT for details.

Trademark

The Rust Foundation owns and protects the Rust and Cargo trademarks and logos (the "Rust Trademarks").

If you want to use these names or brands, please read the media guide.

Third-party logos may be subject to third-party copyrights and trademarks. See Licenses for details.