Messages in this thread | | | From | Pengfei Yuan <> | Date | Wed, 8 Apr 2015 09:00:37 +0800 | Subject | Re: Why not build kernel with -O3 |
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Could you please provide some examples that I can investigate? Thanks!
2015-04-08 2:05 GMT+08:00 Austin S Hemmelgarn <ahferroin7@gmail.com>: > On 2015-04-07 06:09, Mike Galbraith wrote: >> On Tue, 2015-04-07 at 15:56 +0800, Pengfei Yuan wrote: >>> I am trying legacy GCC versions. >>> But I am not able to try different architectures. >> >> The point of my reply wasn't to get you to actually test the world ;-) >> >> I was indirectly pointing out that "works for me" is not good enough >> justification. Much checking for safety/benefit required. >> > Safety especially, -O3 is known to cause perfectly standards-compliant > code to break in weird ways in user-space. > >
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