Re: [EXT] Re: GCC missing -flto optimizations? SPEC lbm benchmark

2019-02-16 Thread Jun Ma
Steve Ellcey 于2019年2月16日周六 上午1:53写道: > On Fri, 2019-02-15 at 17:48 +0800, Jun Ma wrote: > > > > ICC is doing much more than GCC in ipo, especially memory layout > > optimizations. See https://software.intel.com/en-us/node/522667. > > ICC is more aggressive in ar

Re: GCC missing -flto optimizations? SPEC lbm benchmark

2019-02-15 Thread Jun Ma
Bin.Cheng 于2019年2月15日周五 下午5:12写道: > On Fri, Feb 15, 2019 at 3:30 AM Steve Ellcey wrote: > > > > I have a question about SPEC CPU 2017 and what GCC can and cannot do > > with -flto. As part of some SPEC analysis I am doing I found that with > > -Ofast, ICC and GCC were not that far apart (especi