ADDU 1200 src/mips/assembler-mips.cc GenInstrRegister(SPECIAL, rs, rt, rd, 0, ADDU); ADDU 256 src/mips/constants-mips.cc case ADDU: ADDU 687 src/mips/disasm-mips.cc case ADDU: ADDU 1807 src/mips/simulator-mips.cc case ADDU: