> I'll make the argument that stage 3 is when we fix stuff, including > performance regressions, and this patch is very clearly a fix. When we > have very obvious distortions like a case where costs from insn_rtx_cost > and seq_cost aren't comparable, it's impossible to arrive at sane solutions.
It would help to make a pass over the main architecture back-ends and evaluate the potential fallout and required adjustments, if any. -- Eric Botcazou
