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140 Commits

Author SHA1 Message Date
bjorn3
99e112d282 Inline the rest of box_region 2021-06-08 19:24:16 +02:00
Santiago Pastorino
aa7024b0c7
Add VecMap to rustc_data_structures 2021-06-07 19:03:51 -03:00
bjorn3
312f964478 Remove unused feature gates 2021-05-31 13:55:43 +02:00
bjorn3
b4ed7114bd Remove unnecessary unboxed_closures feature usage 
It has been possible to clone closures for a while now
 2021-05-31 12:13:47 +02:00
bjorn3
8331dbe6d0 Add an Mmap wrapper to rustc_data_structures 
This wrapper implements StableAddress and falls back to directly reading
the file on wasm32
 2021-03-30 18:57:03 +02:00
Mara Bos
81932be5e7 Revert "Revert stabilizing integer::BITS." 2021-03-24 22:34:36 +01:00
Dylan DPC
cabe97272d
Rollup merge of #82057 - upsuper-forks:cstr, r=davidtwco,wesleywiser 
Replace const_cstr with cstr crate

This PR replaces the `const_cstr` macro inside `rustc_data_structures` with `cstr` macro from [cstr](https://crates.io/crates/cstr) crate.

The two macros basically serve the same purpose, which is to generate `&'static CStr` from a string literal. `cstr` is better because it validates the literal at compile time, while the existing `const_cstr` does it at runtime when `debug_assertions` is enabled. In addition, the value `cstr` generates can be used in constant context (which is seemingly not needed anywhere currently, though).
 2021-02-27 02:34:21 +01:00
Joshua Nelson
3733275854 Update the bootstrap compiler 
Note this does not change `core::derive` since it was merged after the
beta bump.
 2021-02-20 17:19:30 -05:00
Xidorn Quan
38e4233a32 Replace const_cstr with cstr crate 2021-02-14 09:45:35 +11:00
Mara Bos
89882388d9 Revert stabilizing integer::BITS. 2021-02-03 22:23:58 +01:00
Ashley Mannix
8940a2652e stabilize int_bits_const 2021-01-31 21:50:47 +10:00
Mark Rousskov
fe031180d0 Bump bootstrap compiler to 1.50 beta 2020-12-30 09:27:19 -05:00
Bastian Kauschke
06cc9c26da stabilize min_const_generics 2020-12-26 18:24:10 +01:00
Camelid
810324d1f3 Rename optin_builtin_traits to auto_traits 
They were originally called "opt-in, built-in traits" (OIBITs), but
people realized that the name was too confusing and a mouthful, and so
they were renamed to just "auto traits". The feature flag's name wasn't
updated, though, so that's what this PR does.

There are some other spots in the compiler that still refer to OIBITs,
but I don't think changing those now is worth it since they are internal
and not particularly relevant to this PR.

Also see <https://rust-lang.zulipchat.com/#narrow/stream/131828-t-compiler/topic/opt-in.2C.20built-in.20traits.20(auto.20traits).20feature.20name>.
 2020-11-23 14:14:06 -08:00
Tyson Nottingham
142932ab19 Set unaligned_references lint to deny in rustc_data_structures 
To detect misuse of private packed field in `PackedFingerprint`.
 2020-11-20 01:13:15 -08:00
Bastian Kauschke
2bf93bd852 compiler: fold by value 2020-11-16 22:34:57 +01:00
Jonas Schievink
ae1916b3b4
Rollup merge of #79058 - dtolnay:likelymacro, r=Mark-Simulacrum 
Move likely/unlikely argument outside of invisible unsafe block

The previous `likely!`/`unlikely!` macros were unsound because it permits the caller's expr to contain arbitrary unsafe code.

```rust
pub fn huh() -> bool {
    likely!(std::ptr::read(&() as *const () as *const bool))
}
```

**Before:** compiles cleanly.
**After:**

```console
error[E0133]: call to unsafe function is unsafe and requires unsafe function or block
   |
70 |     likely!(std::ptr::read(&() as *const () as *const bool))
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function
   |
   = note: consult the function's documentation for information on how to avoid undefined behavior
```
 2020-11-15 13:40:03 +01:00
David Tolnay
afb817054c
Move likely/unlikely argument outside of invisible unsafe block 
The previous `likely!`/`unlikely!` macros were unsound because it
permits the caller's expr to contain arbitrary unsafe code.

    pub fn huh() -> bool {
        likely!(std::ptr::read(&() as *const () as *const bool))
    }

Before: compiles cleanly.
After:

    error[E0133]: call to unsafe function is unsafe and requires unsafe function or block
       |
    70 |     likely!(std::ptr::read(&() as *const () as *const bool))
       |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function
       |
       = note: consult the function's documentation for information on how to avoid undefined behavior
 2020-11-14 14:03:57 -08:00
Camille GILLOT
41c44b498f Move Steal to rustc_data_structures. 2020-11-14 01:30:56 +01:00
bors
5171cc76c2 Auto merge of #77476 - tgnottingham:buffered_siphasher128, r=nnethercote 
perf: buffer SipHasher128

This is an attempt to improve Siphasher128 performance by buffering input. Although it reduces instruction count, I'm not confident the effect on wall times, or lack-thereof, is worth the change.

---

Additional notes not reflected in source comments:

* Implementation choices were guided by a combination of results from rustc-perf and micro-benchmarks, mostly the former.
* ~~I tried a couple of different struct layouts that might be more cache friendly with no obvious effect.~~ Update: a particular struct layout was chosen, but it's not critical to performance. See comments in source and discussion below.
* I suspect that buffering would be important to a SIMD-accelerated algorithm, but from what I've read and my own tests, SipHash does not seem very amenable to SIMD acceleration, at least by SSE.
 2020-10-25 09:23:45 +00:00
bors
ea7e131435 Auto merge of #77171 - VFLashM:better_sso_structures, r=oli-obk 
Better sso structures

This change greatly expands interface of MiniSet/MiniMap and renames them because they are no longer "Mini".
 2020-10-05 17:18:01 +00:00
Tyson Nottingham
f6f96e2a87 perf: buffer SipHasher128 2020-10-03 10:03:30 -07:00
Valerii Lashmanov
5c224a484d MiniSet/MiniMap moved and renamed into SsoHashSet/SsoHashMap 
It is a more descriptive name and with upcoming changes
there will be nothing "mini" about them.
 2020-09-26 14:30:05 -05:00
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
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
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
Scott McMurray
fac272688e Use ops::ControlFlow in graph::iterate 2020-09-04 01:45:10 -07:00
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
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