[PATCH] D132216: [CostModel][X86] RFC - Support cost kind specific look up tables

[Phoebe Wang via Phabricator via llvm-commits]

pengfei added inline comments.


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Comment at: llvm/lib/Target/X86/X86TargetTransformInfo.cpp:2727
     // slm pblendvb/blendvpd/blendvps throughput is 4
-    { ISD::SELECT,  MVT::v2f64,   4 }, // vblendvpd
-    { ISD::SELECT,  MVT::v4f32,   4 }, // vblendvps
-    { ISD::SELECT,  MVT::v2i64,   4 }, // pblendvb
-    { ISD::SELECT,  MVT::v8i32,   4 }, // pblendvb
-    { ISD::SELECT,  MVT::v8i16,   4 }, // pblendvb
-    { ISD::SELECT,  MVT::v16i8,   4 }, // pblendvb
+    { ISD::SELECT,  MVT::v2f64,   { 4, 4, 1, 3 } }, // vblendvpd
+    { ISD::SELECT,  MVT::v4f32,   { 4, 4, 1, 3 } }, // vblendvps
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Do we have a place to introduce the meaning of each elements, where they are used and how to get the correct value?
Besides, the previous comments are just for throughput? How can we explain the other values?


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D132216/new/

https://reviews.llvm.org/D132216