emitrxb           307 nanojit/NativeX64.cpp         emitrxb(op, r, x, b);
emitrxb           364 nanojit/NativeX64.h         void emitrxb(uint64_t op, Register r, Register x, Register b);\
emitrxb           365 nanojit/NativeX64.h         void emitxb(uint64_t op, Register x, Register b) { emitrxb(op, (Register)0, x, b); }\