[PATCH] D34458: [TTI] Refine the cost of EXT in getUserCost()

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

It looks like AArch64TargetLowering::isExtFreeImpl has some other special-cases which might be relevant here; could you add a test for `shl(sext(x))`?


Repository:
  rL LLVM

https://reviews.llvm.org/D34458