[llvm] ISel: introduce vector ISD::LRINT, ISD::LLRINT; custom RISCV lowering (PR #66924)

[Craig Topper via llvm-commits]

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@@ -662,6 +662,31 @@ static const CostTblEntry VectorIntrinsicCostTable[]{
     {Intrinsic::rint, MVT::nxv2f64, 7},
     {Intrinsic::rint, MVT::nxv4f64, 7},
     {Intrinsic::rint, MVT::nxv8f64, 7},
+    {Intrinsic::lrint, MVT::v2i32, 7},
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topperc wrote:

Why are these 7? It's 1 instruction isn't it?

https://github.com/llvm/llvm-project/pull/66924