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I thought the Pentium Pro _was_ a 686? Wikipedia seems to correlate: https://en.wikipedia.org/wiki/Pentium_Pro https://en.wikipedia.org/wiki/Pentium_Pro, as do
by ShroudedNight 10mo ago
I thought the Pentium Pro _was_ a 686?
Wikipedia seems to correlate: https://en.wikipedia.org/wiki/Pentium_Pro https://en.wikipedia.org/wiki/Pentium_Pro, as do discussions on CMOV: https://stackoverflow.com/a/4429563 https://stackoverflow.com/a/4429563
- tyfon 10mo agoYes, sorry I remembered incorrectly. The rust compiler claims to be i686 and the CPU is i686 too, but the rust compiler is using Pentium 4 only instructions so it doesn't actually work for i686.
- ShroudedNight 10mo agoYeah, that sucks. I assume this is SSE2?
- tyfon 10mo agoThat is correct :) Edit: I see from the sister post that it is actually llvm and not rust, so I'm half barking up the wrong tree. But somehow this is not an issue with gcc and friends.
- ShroudedNight 10mo agoIt does look like there are legitimate issues with x87 floating-point: https://github.com/rust-lang/rust/issues/114479 https://github.com/rust-lang/rust/issues/114479
- gpm 10mo agoRelated from a couple of days ago: A time-traveling door bug in Half Life 2 https://mastodon.gamedev.place/@TomF/115589875974658415 https://mastodon.gamedev.place/@TomF/115589875974658415 https://news.ycombinator.com/item?id=46009962 https://news.ycombinator.com/item?id=46009962