{"action":"created","issue":{"url":"https://api.github.com/repos/rust-lang/rust/issues/34096","repository_url":"https://api.github.com/repos/rust-lang/rust","labels_url":"https://api.github.com/repos/rust-lang/rust/issues/34096/labels{/name}","comments_url":"https://api.github.com/repos/rust-lang/rust/issues/34096/comments","events_url":"https://api.github.com/repos/rust-lang/rust/issues/34096/events","html_url":"https://github.com/rust-lang/rust/pull/34096","id":158562473,"number":34096,"title":"Switch to MIR-based translation by default.","user":{"login":"eddyb","id":77424,"avatar_url":"https://avatars.githubusercontent.com/u/77424?v=3","gravatar_id":"","url":"https://api.github.com/users/eddyb","html_url":"https://github.com/eddyb","followers_url":"https://api.github.com/users/eddyb/followers","following_url":"https://api.github.com/users/eddyb/following{/other_user}","gists_url":"https://api.github.com/users/eddyb/gists{/gist_id}","starred_url":"https://api.github.com/users/eddyb/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/eddyb/subscriptions","organizations_url":"https://api.github.com/users/eddyb/orgs","repos_url":"https://api.github.com/users/eddyb/repos","events_url":"https://api.github.com/users/eddyb/events{/privacy}","received_events_url":"https://api.github.com/users/eddyb/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/rust-lang/rust/labels/relnotes","name":"relnotes","color":"fad8c7"}],"state":"open","locked":false,"assignee":{"login":"pnkfelix","id":173127,"avatar_url":"https://avatars.githubusercontent.com/u/173127?v=3","gravatar_id":"","url":"https://api.github.com/users/pnkfelix","html_url":"https://github.com/pnkfelix","followers_url":"https://api.github.com/users/pnkfelix/followers","following_url":"https://api.github.com/users/pnkfelix/following{/other_user}","gists_url":"https://api.github.com/users/pnkfelix/gists{/gist_id}","starred_url":"https://api.github.com/users/pnkfelix/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/pnkfelix/subscriptions","organizations_url":"https://api.github.com/users/pnkfelix/orgs","repos_url":"https://api.github.com/users/pnkfelix/repos","events_url":"https://api.github.com/users/pnkfelix/events{/privacy}","received_events_url":"https://api.github.com/users/pnkfelix/received_events","type":"User","site_admin":false},"milestone":null,"comments":5,"created_at":"2016-06-05T16:32:19Z","updated_at":"2016-06-05T16:48:50Z","closed_at":null,"pull_request":{"url":"https://api.github.com/repos/rust-lang/rust/pulls/34096","html_url":"https://github.com/rust-lang/rust/pull/34096","diff_url":"https://github.com/rust-lang/rust/pull/34096.diff","patch_url":"https://github.com/rust-lang/rust/pull/34096.patch"},"body":"This patch makes `-Z orbit` default to \"on\", which means that by default, functions will be translated from Rust to LLVM IR through the upcoming MIR backend, instead of the antiquated AST backend.\r\n\r\nThis switch is made possible by the recently merged #33622 and #33905.\r\nTwo known MIR fixes are yet unmerged (#33989, #34006), however, neither of them affects whether code compiles, just `f32` constant rounding and debugging arguments in function preludes, respectively.\r\n\r\nIf you experience any issues, please file a report for each of them. You can switch to the old backend to work around problems by either setting `RUSTFLAGS=\"-Zorbit=off\"` or by annotating specific functions with `#[rustc_no_mir]` (which requires `#![feature(rustc_attrs)]` at the crate-level).\r\n\r\nI would like this PR to get into this nightly (2016-06-06) so that we can get early feedback in this release cycle and focus on correctness fixes and performance improvements, with the potential for removing the old backend implementation before beta branches off.\r\n\r\ncc @rust-lang/compiler"},"comment":{"url":"https://api.github.com/repos/rust-lang/rust/issues/comments/223823594","html_url":"https://github.com/rust-lang/rust/pull/34096#issuecomment-223823594","issue_url":"https://api.github.com/repos/rust-lang/rust/issues/34096","id":223823594,"user":{"login":"bors","id":3372342,"avatar_url":"https://avatars.githubusercontent.com/u/3372342?v=3","gravatar_id":"","url":"https://api.github.com/users/bors","html_url":"https://github.com/bors","followers_url":"https://api.github.com/users/bors/followers","following_url":"https://api.github.com/users/bors/following{/other_user}","gists_url":"https://api.github.com/users/bors/gists{/gist_id}","starred_url":"https://api.github.com/users/bors/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/bors/subscriptions","organizations_url":"https://api.github.com/users/bors/orgs","repos_url":"https://api.github.com/users/bors/repos","events_url":"https://api.github.com/users/bors/events{/privacy}","received_events_url":"https://api.github.com/users/bors/received_events","type":"User","site_admin":false},"created_at":"2016-06-05T16:48:50Z","updated_at":"2016-06-05T16:48:50Z","body":":pushpin: Commit ce179ea has been approved by `nagisa`\n\n<!-- @bors r=nagisa ce179ea17aa83ad8ccef87038648bd57a768083c -->"}}
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