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Recently I was reminded of x32 Linux ABI [0]. I read about it few years ago when it was being merged to Linux kernel, but not much afterwards. I understand that it did not become popular. It is not better enough to justify the hassle of yet another architecture. Of course there is also the chicken and the egg problem of library support.

I’m wondering if it would be a bit better for older machines. But problems stated earlier still stand. Maybe it would be useful for ChromeOS-like OS.

Nevertheless does anyone use it? Professionally or personally?

[0] https://en.wikipedia.org/wiki/X32_ABI

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    No. Saw it, but it never seemed worth installing a second copy of all my libraries for a questionable performance gain, particularly since the processes that most need a performance improvement tend to be precisely those that also need more than 4GB of memory.

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      If I had to guess I’d say definetly. Probably a lot of embeded DSP systems use it (if they are running Linux). That’s just a guess and I’d also be interested in hearing anything from people who’ve setup such systems.

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        The x32 ABI requires an amd64 processor. I don’t think most DSP systems run on that.