search for: d13076

Hi, I'm interested in implementing an InstCombine optimization that I discovered and verified with Alive-NJ (with the help of the authors of Alive-NJ). The optimization is described in Alive-NJ format as follows: Name: xor->fsub Pre: isSignBit(C) %x = bitcast %A %y = xor %x, C %z = bitcast %y => %z = fsub -0.0, %A Effectively the optimization targets code that casts a float to an int

...7, 2016, at 9:09 AM, Sanjay Patel via llvm-dev <llvm-dev at lists.llvm.org> wrote: > > Hi Carlos - > > That sounds like a good patch. > > Warning - following the link below may remove some of the educational joy for the immediate task at hand: > http://reviews.llvm.org/D13076 <http://reviews.llvm.org/D13076> > > ...but I wouldn't worry too much, there's plenty more opportunity where that came from. :) > > Feel free to post follow-up questions here or via a patch review on Phabricator: > http://llvm.org/docs/Phabricator.html <http://llvm...

...dev at lists.llvm.org> wrote: >>> >>> Hi Carlos - >>> >>> That sounds like a good patch. >>> >>> Warning - following the link below may remove some of the educational joy for the immediate task at hand: >>> http://reviews.llvm.org/D13076 >>> >>> ...but I wouldn't worry too much, there's plenty more opportunity where that came from. :) >>> >>> Feel free to post follow-up questions here or via a patch review on Phabricator: >>> http://llvm.org/docs/Phabricator.html >>>...

...016, at 9:09 AM, Sanjay Patel via llvm-dev <llvm-dev at lists.llvm.org<mailto:llvm-dev at lists.llvm.org>> wrote: Hi Carlos - That sounds like a good patch. Warning - following the link below may remove some of the educational joy for the immediate task at hand: http://reviews.llvm.org/D13076 ...but I wouldn't worry too much, there's plenty more opportunity where that came from. :) Feel free to post follow-up questions here or via a patch review on Phabricator: http://llvm.org/docs/Phabricator.html On Thu, Apr 7, 2016 at 7:17 AM, Carlos Liam via llvm-dev <llvm-dev at lists...