Revert "Jit64: use AVX instructions in some places" and the fixes afterwards This reverts commit ff917897731d400a8e71c1480425733e651126ee. This reverts commit bcefa880e4d062121df9ab8b831170ec3a689a50. This reverts commit 710a0ff435c8593914c6eb074b6bc4d1985ae8c5. This reverts commit ddaf29e039d1736be1ca48c1c0b6af1c8d4ec47d.