R15
UINT64 R15;
UINT64 R15;
#define R16(P, S) R15(P,S##0) R15(P,S##1)
#define R17(P, S) R15(P,S##0) R15(P,S##1) R15(P,S##2) R15(P,S##3)
#define R18(P, S) R15(P,S##0) R15(P,S##1) R15(P,S##2) R15(P,S##3) R15(P,S##4) R15(P,S##5) R15(P,S##6) R15(P,S##7)