automatically updating ulps -- any review needed ?

[Joseph S. Myers]

On Mon, 6 Jan 2014, Andreas Schwab wrote:

> "Joseph S. Myers" <joseph@codesourcery.com> writes:
> 
> > Note that the checked-in file should be truncated before running "make 
> > regen-ulps", so as to remove old ulps for tests for which errors have gone 
> > down or whose names have changed.
> 
> Shouldn't regen-ulps run the tests with --ignore-max-ulp=yes?

That would only work if the ulps were independent of the compiler and 
hardware in use.  For x86 and x86_64, for example, regeneration for a 
release involves one from-scratch regeneration after truncation, then 
subsequent incremental use of regen-ulps by people who see ulps because of 
different compilers or hardware in use (and similarly, outside of the 
freeze, from-scratch x86 / x86_64 regenerations would unnecessarily 
introduce ulps failures for people with hardware different from that used 
for the last regeneration).

-- 
Joseph S. Myers
joseph@codesourcery.com