This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: PATCH COMMITTED: Use conditional moves in groups of assignments


Joern RENNECKE <joern.rennecke@st.com> writes:

> Ian Lance Taylor wrote:
> 
> >  When branches are expensive and additions are cheap:
> >
> >if (a)
> >  {
> >    b = x + y;
> >    c = w + z;
> >
> Oh.  So when you said 'general operands' in your previous post, that did
> not refer to rtl as accepted by the general_operand predicate.
> Should this then be interpreted as: any assignment RHS that does not have
> side effects (including traps)?

Yes, I believe it should be possible to make that work.

Ian


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]