Re: move constructors likely a requirement

[Carlo de Falco]

Il 05 set 2019 20:10, Carlo de Falco <address@hidden> ha scritto:

Il gio 5 set 2019, 19:55 John W. Eaton <address@hidden> ha scritto:

On 9/5/19 12:35 PM, Carlo De Falco wrote:



I'm surprised those are the only warnings, and that there is a warning
on line 122 but not also for line 107 in the same function.

My guess is that it is due to the  NoAlias wrapper which is applied to variable r being returned on line 122 but not on line 107.

I suppose returning a derived type prevents the compiler from applying optimization.

jwe

c.

Here is the definition of the NoAlias template class : 

https://hg.savannah.gnu.org/hgweb/octave/file/d171d356767b/liboctave/array/Array.h#l886

c.