lu-zero

// Standalone memcpy-to-WC benchmark — x86 and AArch64.
// Compile: clang++ -O3 -march=native bench_memcpy_x86_neon.cpp -o bench && ./bench
//
// Tests streaming-store variants vs libc memcpy.
// On x86 the comparison is: AVX2 stream with/without prefetch.
// On AArch64 the comparison is: STNP with/without software prefetch.
// Also: NEON intrinsics and inline assembly variants.
// Run multiple times; the best-of-7 is reported.

#include <cstdint>

lu-zero

enum Error<T> {
  ..
  Again(T),
}
  

  fn send<T: AsRef<[u8]>>(buf: T, ...) -> Result<(), Error<T>> { ... }
  
  let mut buf = ...;
  

lu-zero

# install the system toolchain (see https://docs.brew.sh/Installation)
xcode-select --install

# install homebrew
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

# get the rust base toolchain
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

# make sure to have all the PATHs set, this depends on your shell

lu-zero

5dc771f6c999eda25ec182720d27c78716f08376	refs/heads/0.1
bda611057e18b2a4302745c5679b22c7e8438ae0	refs/heads/0.2
727571e9e88068cbdcf6158006be0671da7a6071	refs/heads/0.3
bfaeeeb01f6341756193904830b45bc94ff8ada5	refs/heads/0.4
d40304b3a13b7f5165e31c5ab35e36a513f37e8a	refs/heads/bugfix/build-grep
31fc0a4da6f35dc3bdcc0ea3b1b0cdb7f121edbd	refs/heads/bugfix/cdef-disabled-cost
2c97c0fcb0ebc17ed3a19456bfcfb9c0dd8984c8	refs/heads/bugfix/non-fatal-distclean
b42905636adadce4cfcacfe6bca7ed3a9ac94c56	refs/heads/bugfix/reference
aef01444ad5e5091817105adefcf99d1e54c3058	refs/heads/cdef-rebase-f5890e3
91af948fdbd26b2f86bd87ac6ae3ec0bf1c86bb6	refs/heads/cleanup/no-wx

lu-zero

./src/libdav1d.5.dylib.p/mc16_avx2.obj:	file format Mach-O 64-bit x86-64


Disassembly of section __TEXT,__text:

0000000000000000 _dav1d_put_8tap_regular_16bpc_avx2:
       0: 41 ba 2d 00 00 00            	movl	$45, %r10d
       6: 41 bb 2d 00 00 00            	movl	$45, %r11d
       c: e9 8f 00 00 00               	jmp	143 <_dav1d_put_8tap_16bpc_avx2>

lu-zero

diff --git a/src/unix/linux_like/linux/musl/b64/aarch64/align.rs b/src/unix/linux_like/linux/musl/b64/aarch64/align.rs
index e114eaecd..637ea4e5a 100644
--- a/src/unix/linux_like/linux/musl/b64/aarch64/align.rs
+++ b/src/unix/linux_like/linux/musl/b64/aarch64/align.rs
@@ -1,25 +1,27 @@
 s_no_extra_traits! {
     #[allow(missing_debug_implementations)]
     #[repr(align(16))]
     pub struct max_align_t {
         priv_: [f32; 8]

lu-zero

/* automatically generated by rust-bindgen */

#[repr(C)]
#[derive(Debug, Copy, Clone)]
pub struct FooA {
    pub a: ::std::os::raw::c_int,
}
#[test]
fn bindgen_test_layout_FooA() {
    assert_eq!(

lu-zero

use rayon::prelude::*;
use std::{thread, time};

fn process(data: usize) -> usize {
    (0..100usize)
        .into_par_iter()
        .map(|v| {
            thread::sleep(time::Duration::from_millis(1));
            data + v
        })

lu-zero

https://github.com/sapir/gcc-rust/issues
https://github.com/philberty/gccrs

lu-zero

warning: function cannot return without recursing
  --> src/main.rs:8:5
   |
8  |     fn default() -> Self {
   |     ^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
...
11 |             .. Default::default()
   |                ------------------ recursive call site
   |
   = note: `#[warn(unconditional_recursion)]` on by default