[PATCH] D128302: [AArch64][CostModel] Detects that ExtractElement at index is not free in AArch64 when result is used as integer.

[Mingming Liu via Phabricator via llvm-commits]

mingmingl marked an inline comment as done.
mingmingl added inline comments.


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Comment at: llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp:1900
       return 0;
   }
 
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davidxl wrote:
> missing return instruction ?
This falls through to use `ST->getVectorInsertExtractBaseCost()` around line 1903. Basically, this patch reduces the case when extracting element at index 0 is considered free (using truck as a baseline).


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D128302/new/

https://reviews.llvm.org/D128302