Fancy-memset Alternatives

fancy-memset reviews and mentions

• LLVM's Libc Gets Much Faster memcpy For RISC-V
  3 projects | news.ycombinator.com | 22 May 2023

  I only have experience with their amd64 code.

  > What problems do they have?

  Nothing in particular, just not particularly amazing performance. They work fine. One thing they have going for them is that they typically have separate versions for every interesting architecture feature level/set, whereas e.g. bionic only has sse code. I guess I can point at my own implementations of memset and memcmp (https://github.com/moon-chilled/fancy-memset https://github.com/moon-chilled/fancy-memcmp), both of which employ novel techniques not used by glibc; but I've not yet gotten around to doing proper benchmarks on either.

• Fast Memset and Memcpy implementations
  2 projects | /r/asm | 26 Nov 2021

  Going to plug my own implementation of the same ideas. Nearly half the branches and code size (gotta save that btb and icache!), similar speed except for <16 range (I am much slower; but these are empirically very rare); and 128~180 range (I am appreciably faster for some reason, this was weird).

• The Art of Picking Intel Registers (2003)
  1 project | news.ycombinator.com | 8 Feb 2021

  Not sure what you mean by 'part'. I reproduced this across two intel and two amd CPUs, comparing my own[0] memset implementation, glibc's, and bionic's.

  0. https://github.com/moon-chilled/fancy-memset

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