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26 Commits

Author SHA1 Message Date
Tyson Nottingham
d061fee177 Stable hashing: add comments and tests concerning platform-independence 
SipHasher128 implements short_write in an endian-independent way, yet
its write_xxx Hasher trait methods undo this endian-independence by byte
swapping the integer inputs on big-endian hardware. StableHasher then
adds endian-independence back by also byte-swapping on big-endian
hardware prior to invoking SipHasher128.

This double swap may have the appearance of being a no-op, but is in
fact by design. In particular, we really do want SipHasher128 to be
platform-dependent, in order to be consistent with the libstd SipHasher.
Try to clarify this intent. Also, add and update a couple of unit tests.
 2020-09-30 00:57:35 -07:00
est31
12187b7f86 Remove unused #[allow(...)] statements from compiler/ 2020-09-26 01:25:55 +02:00
Jonas Schievink
6f3da3d53f
Rollup merge of #77121 - duckymirror:html-root-url, r=jyn514 
Updated html_root_url for compiler crates

Closes #77103

r? @jyn514
 2020-09-25 02:29:45 +02:00
Erik Hofmayer
138a2e5eaa /nightly/nightly-rustc 2020-09-23 21:51:56 +02:00
Erik Hofmayer
dd66ea2d3d Updated html_root_url for compiler crates 2020-09-23 21:14:43 +02:00
Andreas Jonson
6586c37bec Move MiniSet to data_structures 
remove the need for T to be copy from MiniSet as was done for MiniMap
 2020-09-23 08:09:16 +02:00
bors
6d3acf5129 Auto merge of #76928 - lcnr:opaque-types-cache, r=tmandry 
cache types during normalization

partially fixes #75992

reduces the following test from 14 to 3 seconds locally.

cc `@Mark-Simulacrum` would it make sense to add that test to `perf`?
```rust
#![recursion_limit="2048"]
#![type_length_limit="112457564"]

pub async fn h0(v: &String, x: &u64) { println!("{} {}", v, x) }
pub async fn h1(v: &String, x: &u64) { h0(v, x).await }
pub async fn h2(v: &String, x: &u64) { h1(v, x).await }
pub async fn h3(v: &String, x: &u64) { h2(v, x).await }
pub async fn h4(v: &String, x: &u64) { h3(v, x).await }
pub async fn h5(v: &String, x: &u64) { h4(v, x).await }
pub async fn h6(v: &String, x: &u64) { h5(v, x).await }
pub async fn h7(v: &String, x: &u64) { h6(v, x).await }
pub async fn h8(v: &String, x: &u64) { h7(v, x).await }
pub async fn h9(v: &String, x: &u64) { h8(v, x).await }

pub async fn h10(v: &String, x: &u64) { h9(v, x).await }
pub async fn h11(v: &String, x: &u64) { h10(v, x).await }
pub async fn h12(v: &String, x: &u64) { h11(v, x).await }
pub async fn h13(v: &String, x: &u64) { h12(v, x).await }
pub async fn h14(v: &String, x: &u64) { h13(v, x).await }
pub async fn h15(v: &String, x: &u64) { h14(v, x).await }
pub async fn h16(v: &String, x: &u64) { h15(v, x).await }
pub async fn h17(v: &String, x: &u64) { h16(v, x).await }
pub async fn h18(v: &String, x: &u64) { h17(v, x).await }
pub async fn h19(v: &String, x: &u64) { h18(v, x).await }

macro_rules! async_recursive {
    (29, $inner:expr) => { async { async_recursive!(28, $inner) }.await };
    (28, $inner:expr) => { async { async_recursive!(27, $inner) }.await };
    (27, $inner:expr) => { async { async_recursive!(26, $inner) }.await };
    (26, $inner:expr) => { async { async_recursive!(25, $inner) }.await };
    (25, $inner:expr) => { async { async_recursive!(24, $inner) }.await };
    (24, $inner:expr) => { async { async_recursive!(23, $inner) }.await };
    (23, $inner:expr) => { async { async_recursive!(22, $inner) }.await };
    (22, $inner:expr) => { async { async_recursive!(21, $inner) }.await };
    (21, $inner:expr) => { async { async_recursive!(20, $inner) }.await };
    (20, $inner:expr) => { async { async_recursive!(19, $inner) }.await };

    (19, $inner:expr) => { async { async_recursive!(18, $inner) }.await };
    (18, $inner:expr) => { async { async_recursive!(17, $inner) }.await };
    (17, $inner:expr) => { async { async_recursive!(16, $inner) }.await };
    (16, $inner:expr) => { async { async_recursive!(15, $inner) }.await };
    (15, $inner:expr) => { async { async_recursive!(14, $inner) }.await };
    (14, $inner:expr) => { async { async_recursive!(13, $inner) }.await };
    (13, $inner:expr) => { async { async_recursive!(12, $inner) }.await };
    (12, $inner:expr) => { async { async_recursive!(11, $inner) }.await };
    (11, $inner:expr) => { async { async_recursive!(10, $inner) }.await };
    (10, $inner:expr) => { async { async_recursive!(9, $inner) }.await };

    (9, $inner:expr) => { async { async_recursive!(8, $inner) }.await };
    (8, $inner:expr) => { async { async_recursive!(7, $inner) }.await };
    (7, $inner:expr) => { async { async_recursive!(6, $inner) }.await };
    (6, $inner:expr) => { async { async_recursive!(5, $inner) }.await };
    (5, $inner:expr) => { async { async_recursive!(4, $inner) }.await };
    (4, $inner:expr) => { async { async_recursive!(3, $inner) }.await };
    (3, $inner:expr) => { async { async_recursive!(2, $inner) }.await };
    (2, $inner:expr) => { async { async_recursive!(1, $inner) }.await };
    (1, $inner:expr) => { async { async_recursive!(0, $inner) }.await };
    (0, $inner:expr) => { async { h19(&String::from("owo"), &0).await; $inner }.await };
}

async fn f() {
    async_recursive!(14, println!("hello"));
}

fn main() {
    let _ = f();
}
```
r? `@eddyb` requires a perf run.
 2020-09-22 22:52:07 +00:00
Ralf Jung
e177757a04
Rollup merge of #76963 - est31:remove_static_assert, r=oli-obk 
Remove unused static_assert macro
 2020-09-21 10:40:47 +02:00
Ralf Jung
048866bd6b
Rollup merge of #76958 - est31:ns, r=oli-obk 
Replace manual as_nanos and as_secs_f64 reimplementations
 2020-09-21 10:40:39 +02:00
Ralf Jung
50d56bc774
Rollup merge of #76825 - lcnr:array-windows-apply, r=varkor 
use `array_windows` instead of `windows` in the compiler

I do think these changes are beautiful, but do have to admit that using type inference for the window length
can easily be confusing. This seems like a general issue with const generics, where inferring constants adds an additional
complexity which users have to learn and keep in mind.
 2020-09-20 12:08:26 +02:00
Ralf Jung
4322e1b92d
Rollup merge of #76821 - est31:remove_redundant_nightly_features, r=oli-obk,Mark-Simulacrum 
Remove redundant nightly features

Removes a bunch of redundant/outdated nightly features. The first commit removes a `core_intrinsics` use for which a stable wrapper has been provided since. The second commit replaces the `const_generics` feature with `min_const_generics` which might get stabilized this year. The third commit is the result of a trial/error run of removing every single feature and then adding it back if compile failed. A bunch of unused features are the result that the third commit removes.
 2020-09-20 12:08:22 +02:00
est31
c2dad1c6b9 Remove unused static_assert macro 2020-09-20 11:40:51 +02:00
est31
43193dcb88 Use as_secs_f64 in profiling.rs 2020-09-20 10:27:14 +02:00
Bastian Kauschke
3435683fd5 use array_windows instead of windows in the compiler 2020-09-20 08:11:05 +02:00
Bastian Kauschke
1146c39da7 cache types during normalization 2020-09-19 17:27:13 +02:00
Mara Bos
1e2dba1e7c Use T::BITS instead of size_of::<T> * 8. 2020-09-19 06:54:42 +02:00
est31
ebdea01143 Remove redundant #![feature(...)] 's from compiler/ 2020-09-17 07:58:45 +02:00
est31
4fe6ca3789 Replace const_generics feature gate with min_const_generics 
The latter is on the path to stabilization.
 2020-09-17 07:08:53 +02:00
Flying-Toast
2799aec6ab Capitalize safety comments 2020-09-08 22:37:18 -04:00
Scott McMurray
59e37332b0 Add BREAK too, and improve the comments 2020-09-04 16:28:23 -07:00
Scott McMurray
fac272688e Use ops::ControlFlow in graph::iterate 2020-09-04 01:45:10 -07:00
bors
51f79b618d Auto merge of #76233 - cuviper:unhasher, r=Mark-Simulacrum 
Avoid rehashing Fingerprint as a map key

This introduces a no-op `Unhasher` for map keys that are already hash-
like, for example `Fingerprint` and its wrapper `DefPathHash`. For these
we can directly produce the `u64` hash for maps. The first use of this
is `def_path_hash_to_def_id: Option<UnhashMap<DefPathHash, DefId>>`.

cc #56308
r? @eddyb
 2020-09-02 22:16:22 +00:00
Josh Stone
469ca379d6 Avoid rehashing Fingerprint as a map key 
This introduces a no-op `Unhasher` for map keys that are already hash-
like, for example `Fingerprint` and its wrapper `DefPathHash`. For these
we can directly produce the `u64` hash for maps. The first use of this
is `def_path_hash_to_def_id: Option<UnhashMap<DefPathHash, DefId>>`.
 2020-09-01 18:27:02 -07:00
marmeladema
1b650d0fea datastructures: replace lazy_static by SyncLazy from std 2020-09-01 22:06:47 +01:00
marmeladema
68500ffacb datastructures: replace once_cell crate with an impl from std 2020-08-30 20:06:14 +01:00
mark
9e5f7d5631 mv compiler to compiler/ 2020-08-30 18:45:07 +03:00