tzaeschke/phtree-cpp

Improve MSVC intrinsics

Closed this issue · 1 comments

tzaeschke commented

For MSVC we currently use bit scan forward/backward for lzcnt/tzcnt.
We should use lzcnt/tzcnt if available.

tzaeschke commented

These are not supported by MSVC. Also, it turns out that MSVC has no options for optimizing for any modern CPU instructions (e.g. nothing similar to gcc's -mavx, mbmi2, -march=haswell, ....)