Folkert de Vries folkertdev

folkertdev / cargo-config.toml

Created January 12, 2025 16:00

use of the `stfle` instruction for s390x targets, to get the extended facility list

	[build]
	target = "s390x-unknown-linux-gnu"

	[target.s390x-unknown-linux-gnu]
	# runner = "qemu-s390x -cpu max -L /usr/s390x-linux-gnu"
	runner = "qemu-s390x -cpu qemu,vx=on,vxeh=on,vxeh2=off -L /usr/s390x-linux-gnu"
	# runner = "qemu-s390x -cpu z10EC -L /usr/s390x-linux-gnu"

	linker = "s390x-linux-gnu-gcc"

folkertdev / comrak_benchmark.rs

Created March 4, 2025 13:35

comrak_benchmark.rs

	```rust
	pub fn main() {
	for _ in 0..100000 {
	for email in INPUT {
	let result = autolink_email(core::hint::black_box(email.as_bytes()));
	}
	}
	}

	const INPUT: &[&str] = &[

folkertdev / main.rs

Created April 16, 2025 14:40

Profiling SIMD saturating subtract

	const N: usize = 10000;

	fn main() {
	let mut args = std::env::args().skip(1); // skip the program name

	// just get a bunch of arbitrary values cheaply
	const INPUT: &[u8] = include_bytes!(
	"/home/folkertdev/.cargo/registry/cache/github.com-1ecc6299db9ec823/clap-4.2.7.crate"
	);
	let (_, table, _) = unsafe { INPUT.align_to() };

folkertdev / cortex-m-macro.rs

Created April 25, 2025 09:25

cfg macro example

	#[unsafe(naked)]
	extern "C" fn Reset() {
	core::arch::naked_asm!(
	// debug info
	".cfi_sections .debug_frame",
	".cfi_startproc",
	// If enabled, initialise the SP. This is normally initialised by the CPU itself or by a
	// bootloader, but some debuggers fail to set it when resetting the target, leading to
	// stack corruptions.
	#[cfg(feature = "set-sp")]

folkertdev / Cargo.toml

Created May 21, 2025 14:29

benchmark `compare256` performance