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travisstaloch / simdjzon

simdjson port to zig

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get rid of llvm_intrinsics.zig

travisstaloch opened this issue · comments

commented

convert all of the hacks found here and here to zig builtin calls. this will hopefully make it possible to build on mac and other platforms and close #1.

  1. try to use existing zig intrinsics if possible
  2. work toward implementing them in the zig compiler
  • saturating arithmetic - ziglang/zig#9619
  • carrylessMu()l (llvm.x86.pclmulqdq)
  • shuffleEpi8() (llvm.x86.avx2.pshuf.b)
  • shuffleEpi32() (llvm.x86.ssse3.pshuf.b.128)
  • vpalignr() (llvm.x86.vpalignr)
  • _mm256_movemask_epi8() (llvm.x86.avx2.pmovmskb)
  • _mm_maddubs_epi16() (llvm.x86.ssse3.pmadd.ub.sw.128)
  • _mm_madd_epi16() (llvm.x86.sse2.pmadd.wd)
  • _mm_packus_epi32() (llvm.x86.sse41.packusdw)
  • _prevN()
    • converted to @shuffle instruction in aarch64 branch