Extracting operands from rtl instructions

[Abdul Wahid Memon <engrwahidmemon@xxxxxxxxx>]

Considering the following rtl instructions:

(insn 104 457 458 2 (set (reg/v/f:DI 41 r12 [orig:590 dsth ] [590])
        (reg:DI 5 di [ dsth ])) foo.c:15 62 {*movdi_internal_rex64}
     (expr_list:REG_DEAD (reg:DI 5 di [ dsth ])
        (nil)))

Is there any function provided to extract the operands of this
instructions i.e. di and r12?

Regards

Abdul