search for: canmacrofusecmp

I am attempting to implement a minor loop strength reduction optimization for targets that support compare and jump fusion, specifically TTI::canMacroFuseCmp(). My approach might be wrong; however, I am soliciting the idea for feedback, so that I can implement this correctly. My plan is to add a Supplemental LSR formula to LoopStrengthReduce.cpp that optimizes the following case, but perhaps this should stand alone as its own pass: // Example which...

...t: Wednesday, April 4, 2018 3:30 AM > To: llvm-dev at lists.llvm.org > Subject: [llvm-dev] SCEV and LoopStrengthReduction Formulae > > I am attempting to implement a minor loop strength reduction optimization for > targets that support compare and jump fusion, specifically > TTI::canMacroFuseCmp(). My approach might be wrong; however, I am > soliciting the idea for feedback, so that I can implement this correctly. My plan > is to add a Supplemental LSR formula to LoopStrengthReduce.cpp that optimizes > the following case, but perhaps this should stand alone as its own pass: &gt...