https://github.com/rust-lang/rust http://git.dreamy.place/mirrors/rust/atom?h=master 2018-09-06T11:00:26+00:00 2018-09-06T11:00:26+00:00 Felix S. Klock II pnkfelix@pnkfx.org 2018-08-30T11:16:59+00:00 urn:sha1:7834c2284801766f9925576e8f4d05d7cb7b23dd 2017-11-20T05:07:41+00:00 Alex Crichton alex@alexcrichton.com 2017-10-23T03:01:00+00:00 urn:sha1:80ff0f74b0c4a8d384160af81a1b21f53622d8af This commit adds a new target to the compiler: wasm32-unknown-unknown. This target is a reimagining of what it looks like to generate WebAssembly code from Rust. Instead of using Emscripten which can bring with it a weighty runtime this instead is a target which uses only the LLVM backend for WebAssembly and a "custom linker" for now which will hopefully one day be direct calls to lld. Notable features of this target include: * There is zero runtime footprint. The target assumes nothing exists other than the wasm32 instruction set. * There is zero toolchain footprint beyond adding the target. No custom linker is needed, rustc contains everything. * Very small wasm modules can be generated directly from Rust code using this target. * Most of the standard library is stubbed out to return an error, but anything related to allocation works (aka `HashMap`, `Vec`, etc). * Naturally, any `#[no_std]` crate should be 100% compatible with this new target. This target is currently somewhat janky due to how linking works. The "linking" is currently unconditional whole program LTO (aka LLVM is being used as a linker). Naturally that means compiling programs is pretty slow! Eventually though this target should have a linker. This target is also intended to be quite experimental. I'm hoping that this can act as a catalyst for further experimentation in Rust with WebAssembly. Breaking changes are very likely to land to this target, so it's not recommended to rely on it in any critical capacity yet. We'll let you know when it's "production ready". --- Currently testing-wise this target is looking pretty good but isn't complete. I've got almost the entire `run-pass` test suite working with this target (lots of tests ignored, but many passing as well). The `core` test suite is still getting LLVM bugs fixed to get that working and will take some time. Relatively simple programs all seem to work though! --- It's worth nothing that you may not immediately see the "smallest possible wasm module" for the input you feed to rustc. For various reasons it's very difficult to get rid of the final "bloat" in vanilla rustc (again, a real linker should fix all this). For now what you'll have to do is: cargo install --git https://github.com/alexcrichton/wasm-gc wasm-gc foo.wasm bar.wasm And then `bar.wasm` should be the smallest we can get it! --- In any case for now I'd love feedback on this, particularly on the various integration points if you've got better ideas of how to approach them! 2015-03-23T21:40:26+00:00 Brian Anderson banderson@mozilla.com 2015-03-22T20:13:15+00:00 urn:sha1:8c93a79e387f5197e8b8fe73b3d87d2b101b7c4a Now that features must be declared expanded source often does not compile. This adds 'pretty-expanded' to a bunch of test cases that still work. 2015-03-23T21:40:26+00:00 Brian Anderson banderson@mozilla.com 2015-03-06T02:33:58+00:00 urn:sha1:df290f127e923e0aacfe8223dd77f0fa222f0bc8 2015-03-06T01:29:38+00:00 Brian Anderson banderson@mozilla.com 2015-03-06T01:29:38+00:00 urn:sha1:8655e94abf530b3e9cb10e6acc5e39e21d3c19a3 2014-06-28T18:53:58+00:00 Alex Crichton alex@alexcrichton.com 2014-06-25T19:47:34+00:00 urn:sha1:0dfc90ab15475aa64bea393671463a8e9784ae3f 2014-04-04T16:31:44+00:00 Corey Richardson corey@octayn.net 2014-02-26T17:58:41+00:00 urn:sha1:0459ee77d0c764cc27950465cb19053e1456cc95 2014-03-12T22:01:25+00:00 lpy pylaurent1314@gmail.com 2014-03-11T13:39:26+00:00 urn:sha1:aac6e317639140a149d97116d43e66b5bd76bce3 2013-10-14T12:33:05+00:00 Steve Klabnik steve@steveklabnik.com 2013-10-14T12:33:05+00:00 urn:sha1:309ab958e6cf78caf188f6dcbf9ce35d9ba62468 as per https://github.com/mozilla/rust/pull/9606#discussion_r6930872 2013-10-14T11:10:36+00:00 Steve Klabnik steve@steveklabnik.com 2013-09-29T14:46:26+00:00 urn:sha1:16fc6a694cac35ce962e98e180354cbce6a72f54 They've been replaced by putting the name on the extern block. #[abi = "foo"] goes to extern "foo" { } Closes #9483.