[PATCH] D126885: [SLP]Cost for a constant buildvector.

[Valeriy Dmitriev via Phabricator via llvm-commits]

vdmitrie added a comment.

F23306372: icost.ll <https://reviews.llvm.org/F23306372>

Test case for collection.



================
Comment at: llvm/lib/Target/X86/X86TargetTransformInfo.cpp:3787
+  case Instruction::AShr:
+    if (Idx == 1)
+      return TTI::TCC_Free;
----------------
Note that it is free for splat shift value only.
https://godbolt.org/z/KMf6sW5n3


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https://reviews.llvm.org/D126885