bors 4940dd483a Auto merge of #80962 - jhpratt:const_int_fn-stabilization, r=dtolnay ... Stabilize remaining integer methods as `const fn` This pull request stabilizes the following methods as `const fn`: - `i*::checked_div` - `i*::checked_div_euclid` - `i*::checked_rem` - `i*::checked_rem_euclid` - `i*::div_euclid` - `i*::overflowing_div` - `i*::overflowing_div_euclid` - `i*::overflowing_rem` - `i*::overflowing_rem_euclid` - `i*::rem_euclid` - `i*::wrapping_div` - `i*::wrapping_div_euclid` - `i*::wrapping_rem` - `i*::wrapping_rem_euclid` - `u*::checked_div` - `u*::checked_div_euclid` - `u*::checked_rem` - `u*::checked_rem_euclid` - `u*::div_euclid` - `u*::overflowing_div` - `u*::overflowing_div_euclid` - `u*::overflowing_rem` - `u*::overflowing_rem_euclid` - `u*::rem_euclid` - `u*::wrapping_div` - `u*::wrapping_div_euclid` - `u*::wrapping_rem` - `u*::wrapping_rem_euclid` These can all be implemented on the current stable (1.49). There are two unstable details: const likely/unlikely and unchecked division/remainder. Both of these are for optimizations, and are in no way required to make the methods function; there is no exposure of these details publicly. Per comments below, it seems best practice is to stabilize the intrinsics. As such, `intrinsics::unchecked_div` and `intrinsics::unchecked_rem` have been stabilized as `const` as part of this pull request as well. The methods themselves remain unstable. I believe part of the reason these were not stabilized previously was the behavior around division by 0 and modulo 0. After testing on nightly, the diagnostic for something like `const _: i8 = 5i8 % 0i8;` is similar to that of `const _: i8 = 5i8.rem_euclid(0i8);` (assuming the appropriate feature flag is enabled). As such, I believe these methods are ready to be stabilized as `const fn`. This pull request represents the final methods mentioned in #53718. As such, this PR closes #53718. `@rustbot` modify labels to +A-const-fn, +T-libs		2021-02-08 05:05:55 +00:00
..
alloc	Rollup merge of #81526 - ojeda:btree-use-unwrap_unchecked, r=scottmcm	2021-02-07 14:45:46 +01:00
backtrace@af078ecc0b	std: Update the backtrace crate submodule	2020-11-20 11:56:07 -08:00
core	Auto merge of #80962 - jhpratt:const_int_fn-stabilization, r=dtolnay	2021-02-08 05:05:55 +00:00
panic_abort	slightly more typed interface to panic implementation	2020-12-21 13:37:59 +01:00
panic_unwind	Revert stabilizing integer::BITS.	2021-02-03 22:23:58 +01:00
proc_macro	Bump bootstrap compiler to 1.50 beta	2020-12-30 09:27:19 -05:00
profiler_builtins	Fix warning whe building profiler_builtins crate	2020-09-04 15:10:29 +02:00
rtstartup	Bump bootstrap compiler to 1.50 beta	2020-12-30 09:27:19 -05:00
rustc-std-workspace-alloc	mv std libs to library/	2020-07-27 19:51:13 -05:00
rustc-std-workspace-core	Fix rustc-std-workspace-core documentation	2020-12-20 15:23:21 +08:00
rustc-std-workspace-std	mv std libs to library/	2020-07-27 19:51:13 -05:00
std	expand/resolve: Turn #[derive] into a regular macro attribute	2021-02-07 20:08:45 +03:00
stdarch@9c732a56f6	Update stdarch submodule	2020-12-21 00:00:00 +00:00
term	Allow/fix non_fmt_panic in tests.	2021-02-03 23:15:45 +01:00
test	Auto merge of #81821 - nikic:update-wasm32, r=sanxiyn	2021-02-07 02:36:08 +00:00
unwind	Support AArch64 ILP32 in libunwind bindings	2021-01-27 22:47:57 +00:00