[PATCH] D89665: [LSR] ignore profitable chain optimization when instruction number is the major cost

[Qing Shan Zhang via Phabricator via llvm-commits]

steven.zhang added inline comments.


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Comment at: llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp:3097
   }
   // Remove any unprofitable chains.
   unsigned ChainIdx = 0;
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I am not familiar with the code logic. But it makes more sense to bail out here when the instruction is the major cost.


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  https://reviews.llvm.org/D89665/new/

https://reviews.llvm.org/D89665