}
-MemOperand::MemOperand(Register base, ptrdiff_t offset, AddrMode addrmode)
+MemOperand::MemOperand(Register base, int64_t offset, AddrMode addrmode)
: base_(base), regoffset_(NoReg), offset_(offset), addrmode_(addrmode),
shift_(NO_SHIFT), extend_(NO_EXTEND), shift_amount_(0) {
DCHECK(base.Is64Bits() && !base.IsZero());