IRA conflict graph, multiple alternatives and commutative operands

I'm looking at PR 42258. I have a question on IRA conflict graph and multiple alternatives. Below is an RTL insn just before register allocation pass: (insn 7 6 12 2 pr42258.c:2 (set (reg:SI 136) (mult:SI (reg:SI 137) (reg/v:SI 135 [ x ]))) 33 {*thumb_mulsi3}) IRA

Re: IRA conflict graph, multiple alternatives and commutative operands

Jie Zhang wrote: I'm looking at PR 42258. I have a question on IRA conflict graph and multiple alternatives. Below is an RTL insn just before register allocation pass: (insn 7 6 12 2 pr42258.c:2 (set (reg:SI 136) (mult:SI (reg:SI 137) (reg/v:SI 135 [ x ]))) 33