Re: how to check if target supports andnot instruction ?

2016-10-15 Thread Prathamesh Kulkarni
On 13 October 2016 at 13:22, Marc Glisse wrote: > On Thu, 13 Oct 2016, Prathamesh Kulkarni wrote: > >> On 12 October 2016 at 14:43, Richard Biener wrote: >>> >>> On Wed, 12 Oct 2016, Marc Glisse wrote: >>> On Wed, 12 Oct 2016, Prathamesh Kulkarni wrote: > I was having a look at PR71

Re: Question about sibling call epilogues & registers

2016-10-15 Thread Segher Boessenkool
Hi Daniel, On Sat, Oct 15, 2016 at 01:45:12AM -0500, Daniel Santos wrote: > The insn that's getting deleted is 75, where RCX is set. I'm starting > to think that maybe df_analyze() presumes that my call (to the stub) is > invalidating RCX, although it does not. It looks like you don't use add_