Displaying 1 result from an estimated 1 matches for "iic_unary_reg".
2018 Mar 28
1
Taking over an x86 opcode for my own instruction
...conflict: NOT64r would overwrite CACHE_OPERAND_B64i
ModRM 215
Opcode 247
Context IC_64BIT_REXW
Which corresponds to the definition:
def NOT64r : RI<0xF7, MRM2r, (outs GR64:$dst), (ins GR64:$src1),
"not{q}\t$dst",
[(set GR64:$dst, (not GR64:$src1))], IIC_UNARY_REG>;
Again, why does 0xF7 conflict with 0xF1?
Thanks,
Gus Smith
P.S. If this looks hacky, that's because it is; I'm not sure what the
correct way to add an instruction into x86 is, if there even is one.
Pointers along that line are appreciated.
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