bors b583ede652 Auto merge of #99767 - LeSeulArtichaut:stable-target-feature-11, r=estebank ... Stabilize `#![feature(target_feature_11)]` ## Stabilization report ### Summary Allows for safe functions to be marked with `#[target_feature]` attributes. Functions marked with `#[target_feature]` are generally considered as unsafe functions: they are unsafe to call, cannot be assigned to safe function pointers, and don't implement the `Fn*` traits. However, calling them from other `#[target_feature]` functions with a superset of features is safe. ```rust // Demonstration function #[target_feature(enable = "avx2")] fn avx2() {} fn foo() { // Calling `avx2` here is unsafe, as we must ensure // that AVX is available first. unsafe { avx2(); } } #[target_feature(enable = "avx2")] fn bar() { // Calling `avx2` here is safe. avx2(); } ``` ### Test cases Tests for this feature can be found in [`src/test/ui/rfcs/rfc-2396-target_feature-11/`](b67ba9ba20/src/test/ui/rfcs/rfc-2396-target_feature-11/). ### Edge cases - https://github.com/rust-lang/rust/issues/73631 Closures defined inside functions marked with `#[target_feature]` inherit the target features of their parent function. They can still be assigned to safe function pointers and implement the appropriate `Fn*` traits. ```rust #[target_feature(enable = "avx2")] fn qux() { let my_closure = || avx2(); // this call to `avx2` is safe let f: fn() = my_closure; } ``` This means that in order to call a function with `#[target_feature]`, you must show that the target-feature is available while the function executes *and* for as long as whatever may escape from that function lives. ### Documentation - Reference: https://github.com/rust-lang/reference/pull/1181 --- cc tracking issue #69098 r? `@ghost`		2023-02-28 01:14:56 +00:00
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assembly
auxiliary
codegen	Auto merge of #107921 - cjgillot:codegen-overflow-check, r=tmiasko	2023-02-19 18:17:26 +00:00
codegen-units
debuginfo
incremental
mir-opt	Auto merge of #99767 - LeSeulArtichaut:stable-target-feature-11, r=estebank	2023-02-28 01:14:56 +00:00
pretty
run-make	errors: fix translation's run-make test	2023-02-22 09:15:54 +00:00
run-make-fulldeps	various: translation resources from cg backend	2023-02-22 09:15:54 +00:00
run-pass-valgrind
rustdoc	rustdoc: avoid including <li> tags in item table short desc	2023-02-23 13:53:27 -07:00
rustdoc-gui	No need for the wait-for anymore to go around browser navigation bug	2023-02-23 22:04:38 +01:00
rustdoc-js
rustdoc-js-std	rustdoc: hide reference methods in search index	2023-02-16 17:21:57 -07:00
rustdoc-json	Add regression test for #107677	2023-02-18 18:28:17 +01:00
rustdoc-ui	Auto merge of #108473 - matthiaskrgr:rollup-qjyae58, r=matthiaskrgr	2023-02-26 02:04:23 +00:00
ui	Auto merge of #99767 - LeSeulArtichaut:stable-target-feature-11, r=estebank	2023-02-28 01:14:56 +00:00
ui-fulldeps	Auto merge of #108233 - ChrisDenton:move-std-tests, r=thomcc	2023-02-25 10:26:57 +00:00
COMPILER_TESTS.md