f1252996f5
v2: Make sure that asImm() is not NULL (Samuel Pitoiset) v3: Check the range of immediate in OP_SHFL (Ilia Mirkin) Signed-off-by: Boyan Ding <boyan.j.ding@gmail.com> Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>