> -----Original Message----- > From: wangjue <[email protected]> > Sent: Thursday, September 3, 2026 7:23 PM > To: Cui, Lili <[email protected]>; Jeff Law <[email protected]>; > gcc-patches <[email protected]> > Cc: rdapp.gcc <[email protected]>; wangjue.wangjue > <[email protected]> > Subject: Re: [PATCH v4] ifcvt: Account for parallelism when costing noce > sequences > > 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. > Sounds good, thanks!
BRs, Lili > > Best regards, > Wang Jue > >
