Hacker News: icelusxlhttps://news.ycombinator.com/user?id=icelusxlHacker News RSShttps://hnrss.org/hnrss v2.1.1Thu, 09 Apr 2026 11:30:24 +0000<![CDATA[New comment by icelusxl in "Microsoft hasn't had a coherent GUI strategy since Petzold"]]>The "Performance Improvements in .NET" blog lists the new JIT support for instruction sets each year.

https://devblogs.microsoft.com/dotnet/performance-improvemen...

]]>Mon, 06 Apr 2026 18:02:17 +0000https://news.ycombinator.com/item?id=47664513icelusxlhttps://news.ycombinator.com/item?id=47664513https://news.ycombinator.com/item?id=47664513<![CDATA[New comment by icelusxl in "AVX Bitwise ternary logic instruction busted"]]>Also supported in .NET 9

* https://devblogs.microsoft.com/dotnet/performance-improvemen...

* https://github.com/dotnet/runtime/pull/91227

]]>Mon, 07 Oct 2024 06:07:14 +0000https://news.ycombinator.com/item?id=41763199icelusxlhttps://news.ycombinator.com/item?id=41763199https://news.ycombinator.com/item?id=41763199<![CDATA[New comment by icelusxl in "Bit Twiddling Hacks (2009)"]]>Maybe http://0x80.pl -- this site features mainly SIMD/SWAR code.

]]>Fri, 23 Aug 2024 09:19:39 +0000https://news.ycombinator.com/item?id=41327443icelusxlhttps://news.ycombinator.com/item?id=41327443https://news.ycombinator.com/item?id=41327443<![CDATA[New comment by icelusxl in "Chrome: Heap buffer overflow in WebP"]]>Seems to be reported by Apple and looks a lot like this security update: https://support.apple.com/en-us/HT213906

]]>Tue, 12 Sep 2023 09:46:47 +0000https://news.ycombinator.com/item?id=37478742icelusxlhttps://news.ycombinator.com/item?id=37478742https://news.ycombinator.com/item?id=37478742<![CDATA[New comment by icelusxl in "Popcount CPU instruction (2019)"]]>> "rotate and mask" series of instructions

Sounds a lot like the PowerPC's rlwinm instruction.

The PowerPC 600 series, part 5: Rotates and shifts

https://devblogs.microsoft.com/oldnewthing/20180810-00/?p=99...

]]>Sun, 13 Aug 2023 18:27:55 +0000https://news.ycombinator.com/item?id=37112668icelusxlhttps://news.ycombinator.com/item?id=37112668https://news.ycombinator.com/item?id=37112668<![CDATA[New comment by icelusxl in "RISC-V Instructions"]]>"rep stosb" has been optimized since Ivy Bridge CPUs.

> Beginning with processors based on Ivy Bridge microarchitecture, REP string operation using MOVSB and STOSB can provide both flexible and high-performance REP string operations for software in common situations like memory copy and set operations.

> Beginning with processors based on Ice Lake Client microarchitecture, REP MOVSB performance of short operations is enhanced. The enhancement applies to string lengths between 1 and 128 bytes long.

* https://www-ssl.intel.com/content/www/us/en/architecture-and...

* https://stackoverflow.com/a/33485055

]]>Mon, 10 Jul 2023 08:50:33 +0000https://news.ycombinator.com/item?id=36663658icelusxlhttps://news.ycombinator.com/item?id=36663658https://news.ycombinator.com/item?id=36663658<![CDATA[New comment by icelusxl in "Dynamic bit shuffle using AVX-512"]]>* Visualization: https://www.officedaytime.com/simd512e/

* Book: https://link.springer.com/book/10.1007/978-1-4842-4063-2

]]>Fri, 30 Jun 2023 13:47:21 +0000https://news.ycombinator.com/item?id=36534835icelusxlhttps://news.ycombinator.com/item?id=36534835https://news.ycombinator.com/item?id=36534835<![CDATA[New comment by icelusxl in "Amazon EC2 M1 Mac Instances"]]>€49/month at Hetzner.

https://www.hetzner.com/dedicated-rootserver/matrix-apple

]]>Thu, 02 Dec 2021 17:57:56 +0000https://news.ycombinator.com/item?id=29419756icelusxlhttps://news.ycombinator.com/item?id=29419756https://news.ycombinator.com/item?id=29419756