[llvm] 8632605 - [RISCV][TTI] Simplify code using getRealVLen() [NFC]

[Philip Reames via llvm-commits]

Author: Philip Reames
Date: 2025-03-04T09:48:06-08:00
New Revision: 863260523f97069d4cc45f1876f49b3392526d07

URL: https://github.com/llvm/llvm-project/commit/863260523f97069d4cc45f1876f49b3392526d07
DIFF: https://github.com/llvm/llvm-project/commit/863260523f97069d4cc45f1876f49b3392526d07.diff

LOG: [RISCV][TTI] Simplify code using getRealVLen() [NFC]

Added: 
    

Modified: 
    llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp

Removed: 
    


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diff  --git a/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp b/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
index 6005c067428eb..4f9f09addb3ed 100644
--- a/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
+++ b/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
@@ -721,11 +721,9 @@ InstructionCost RISCVTTIImpl::getShuffleCost(TTI::ShuffleKind Kind,
     // TODO: Extend for scalable subvector types
     if (std::pair<InstructionCost, MVT> SubLT = getTypeLegalizationCost(SubTp);
         SubLT.second.isValid() && SubLT.second.isFixedLengthVector()) {
-      const unsigned MinVLen = ST->getRealMinVLen();
-      const unsigned MaxVLen = ST->getRealMaxVLen();
-      if (MinVLen == MaxVLen &&
-          SubLT.second.getScalarSizeInBits() * Index % MinVLen == 0 &&
-          SubLT.second.getSizeInBits() <= MinVLen)
+      if (std::optional<unsigned> VLen = ST->getRealVLen();
+          VLen && SubLT.second.getScalarSizeInBits() * Index % *VLen == 0 &&
+          SubLT.second.getSizeInBits() <= *VLen)
         return TTI::TCC_Free;
     }