2013/8/2 Abdul Wahid Memon <engrwahidmemon@xxxxxxxxx>:
> Considering the following rtx
>
> (insn 123 122 125 3 (set (reg:DI 531 [ pretmp.143 ])
> (sign_extend:DI (reg/v:SI 594 [ stride ]))) sum.c:19 126
> {*extendsidi2_rex64}
> (nil))
>
> Is there any function available in RTL API which could extract the
> instruction name i.e. extendsidi2_rex64?
>
AFAIK the API you require is get_insn_name() in insn-output.c,
which is generated automatically by the program 'genoutput' from
your machine description design during the building process.
You can refer to print_rtx() function in gcc/print-rtl.c for more
implementation detail.
Best regards,
jasonwucj
