search for: r999

...tion first, because pretty much everything related to applymask depends on it :-). But if it is true, then we can say that instcombine's job is made easier by applymask. Instcombine primarily does very localized analysis, so it can look at something like this: %r0 = neg %r888 %r1 = neg %r999 %r2 = add %r0, %r1 and without knowing anything about r888 or r999 and whether or not there were applymasks involved in producing their value, it can safely do the transformation. A key rule in my initial email is that the operands of any operator must be under the same mask. The Verifier can...

On Tuesday 05 August 2008 13:27, David Greene wrote: > Neither solution eliminates the need for instcombine to be careful and > consult masks from time to time. > > Perhaps I'm totally missing something. Concrete examples would be helpful. Ok, so I took my own advice and thought about CSE and instcombine a bit. I wrote the code by hand in a sort of pseudo-llvm language, so