Extracts original x87 FPU bytes from WoW.exe via Ghidra, mmaps them
executable, and benchmarks against our SSE replacements. Covers all 17
UnitXP polyfill functions with correctness validation and cycle counts.
Maps a page at 0x7ff000 for the float 1.0 constant referenced by
rotMat3x3/rotMat4x4/planeNormal via absolute address 0x7ff9d8.
Build: zig build bench / zig build run-bench