Hi Lili > I collected performance data with this patch on an x86 machine, with SPEC > CPU2017/2026, there is no regression. Thanks for running the performance tests.
>I have a slight concern: Why is only the new sequence costed in parallel, and >not the original sequence? This leaves the comparison unfair. That sounds like a reasonable concern. I will experiment locally with changing how the serial costs of the then and else blocks are calculated, and then rerun the benchmarks to evaluate the performance impact. Best regards, Wang Jue
