Write val to low 32 bits of a ZMM register; upper bits are preserved.
(wx32 reg val x86) → x86
Function: wx32$inline
(defun wx32$inline (reg val x86) (declare (xargs :stobjs (x86))) (declare (type (unsigned-byte 4) reg) (type (unsigned-byte 32) val)) (wz32 reg val x86 :regtype 1))