BX               1068 src/arm/assembler-arm.cc   emit(cond | B24 | B21 | 15*B16 | 15*B12 | 15*B8 | BX | target.code());
BX                800 src/arm/disasm-arm.cc         case BX:
BX               2212 src/arm/simulator-arm.cc         case BX: