bors 6cdd42f9f8 Auto merge of #88988 - Mark-Simulacrum:avoid-into-ok, r=nagisa ...

Avoid codegen for Result::into_ok in lang_start

This extra codegen seems to be the cause for the regressions in max-rss on #86034. While LLVM will certainly optimize the dead code away, avoiding it's generation in the first place seems good, particularly when it is so simple.

#86034 produced this [diff](https://gist.github.com/Mark-Simulacrum/95c7599883093af3b960c35ffadf4dab#file-86034-diff) for a simple `fn main() {}`. With this PR, that diff [becomes limited to just a few extra IR instructions](https://gist.github.com/Mark-Simulacrum/95c7599883093af3b960c35ffadf4dab#file-88988-from-pre-diff) -- no extra functions.

Note that these are pre-optimization; LLVM surely will eliminate this during optimization. However, that optimization can end up generating more work and bump memory usage, and this eliminates that.

2021-09-18 09:15:40 +00:00

..

backtrace

Add Frames iterator for Backtrace

2021-01-23 11:56:33 -06:00

collections

Fix typo in docs for iterators

2021-09-09 19:21:56 -07:00

env

std: move "mod tests/benches" to separate files

2020-08-31 02:56:59 +00:00

error

std: move "mod tests/benches" to separate files

2020-08-31 02:56:59 +00:00

f32

More lerp tests, altering lerp docs

2021-06-13 14:00:15 -04:00

f64

More lerp tests, altering lerp docs

2021-06-13 14:00:15 -04:00

ffi

docs(std): add docs for cof_from_cstr impls

2021-09-15 09:14:20 -07:00

fs

Fix may not to appropriate might not or must not

2021-07-29 01:15:20 -04:00

io

Rollup merge of #88667 - kraktus:patch-1, r=dtolnay

2021-09-10 08:23:21 -07:00

lazy

Upgrade wasm32 image to Ubuntu 20.04

2021-02-06 13:05:56 +01:00

net

Rollup merge of #88339 - piegamesde:master, r=joshtriplett

2021-09-17 14:09:45 +09:00

num

rustc_expand: Mark inner #![test] attributes as soft-unstable

2020-11-20 19:35:03 +03:00

os

Rollup merge of #88953 - joshtriplett:chown, r=dtolnay

2021-09-17 17:41:18 +02:00

panic

review: fix nits and move panic safety tests to the correct place

2020-09-25 23:10:24 +02:00

path

Auto merge of #85166 - mbhall88:file-prefix, r=dtolnay

2021-08-22 05:19:48 +00:00

prelude

Move asm! and global_asm! to core::arch

2021-07-18 18:30:58 -04:00

process

Test that env_clear works on Windows

2021-06-24 09:32:24 +01:00

sync

Fix may not to appropriate might not or must not

2021-07-29 01:15:20 -04:00

sys

Add chown functions to std::os::unix::fs to change the owner and group of files

2021-09-14 19:10:05 -07:00

sys_common

add TcpStream::set_linger and TcpStream::linger

2021-08-30 13:42:52 -04:00

thread

removed references to parent/child from std::thread documentation

2021-08-07 11:33:18 -04:00

time

Fix typos “an”→“a” and a few different ones that appeared in the same search

2021-08-22 18:15:49 +02:00

alloc.rs

Rename rterr to rtprintpanic

2021-05-19 15:52:09 +02:00

ascii.rs

Convert many files to intra-doc links

2020-09-02 17:37:40 -04:00

backtrace.rs

Fix may not to appropriate might not or must not

2021-07-29 01:15:20 -04:00

env.rs

Document std::env::current_exe rename behaviour

2021-08-27 14:25:29 +01:00

error.rs

Rollup merge of #82179 - mbartlett21:patch-5, r=joshtriplett

2021-06-15 17:40:03 +09:00

f32.rs

Fix may not to appropriate might not or must not

2021-07-29 01:15:20 -04:00

f64.rs

Fix may not to appropriate might not or must not

2021-07-29 01:15:20 -04:00

fs.rs

Add comments about impls for File, TcpStream, ChildStdin, etc.

2021-08-19 12:02:40 -07:00

keyword_docs.rs

Fix typo in break docs

2021-09-16 14:51:14 +03:00

lazy.rs

Constified Default implementations

2021-08-17 07:15:54 +00:00

lib.rs

Allow panic!("{}", computed_str) in const fn.

2021-09-15 21:56:43 +01:00

macros.rs

bump bootstrap compiler to 1.55

2021-08-01 11:19:24 -04:00

num.rs

Add Saturating type (based on Wrapping type)

2021-08-10 19:27:01 +02:00

panic.rs

Allow panic!("{}", computed_str) in const fn.

2021-09-15 21:56:43 +01:00

panicking.rs

Bump stage0 compiler to 1.56

2021-09-08 20:51:05 -04:00

path.rs

Auto merge of #85166 - mbhall88:file-prefix, r=dtolnay

2021-08-22 05:19:48 +00:00

primitive_docs.rs

Add primitive documentation to libcore

2021-09-12 02:23:08 +00:00

process.rs

Add comments about impls for File, TcpStream, ChildStdin, etc.

2021-08-19 12:02:40 -07:00

rt.rs

Auto merge of #88988 - Mark-Simulacrum:avoid-into-ok, r=nagisa

2021-09-18 09:15:40 +00:00

time.rs

Adding examples to docs of std::time module

2021-08-29 23:59:35 -03:00