Ville Skyttä wrote:
On Friday 30 January 2009, Bill Nottingham wrote:
> Kevin Fenzi (kevin(a)scrye.com) said, in the FESCo meeting summary:
>> * Architecture Support
>>
https://fedoraproject.org/wiki/Features/ArchitectureSupport
> * 32-bit x86 would be built for i686 by default. 586-compatible processors
> would no longer be supported.
[...]
> * i386: -march=i586 -mtune=generic
Should the latter be -march=i686?
I was wondering this too but in the opposite direction -- why build
everything for i686 by default if we're only updating the compiler flags
to i586?
Jakub's email sparking this Feature listed the major benefit from
getting new instructions with -march=i486. He then listed additional
helpful instructions when using -march=i586. Nothing listed for
-march=i686.
-Toshio