[llvm-branch-commits] [llvm] [LoongArch] Add shuffle and vector element cost hooks (PR #233033)

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Fri Oct 16 23:48:18 PDT 2026


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<details>
<summary>
You can test this locally with the following command:
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``````````bash
git-clang-format --diff origin/main HEAD --extensions h,cpp -- llvm/lib/Target/LoongArch/LoongArchTargetTransformInfo.cpp llvm/lib/Target/LoongArch/LoongArchTargetTransformInfo.h --diff_from_common_commit
``````````

:warning:
The reproduction instructions above might return results for more than one PR
in a stack if you are using a stacked PR workflow. You can limit the results by
changing `origin/main` to the base branch/commit you want to compare against.
:warning:

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<details>
<summary>
View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Target/LoongArch/LoongArchTargetTransformInfo.cpp b/llvm/lib/Target/LoongArch/LoongArchTargetTransformInfo.cpp
index 6bd05ac6b..709c5f8d3 100644
--- a/llvm/lib/Target/LoongArch/LoongArchTargetTransformInfo.cpp
+++ b/llvm/lib/Target/LoongArch/LoongArchTargetTransformInfo.cpp
@@ -484,8 +484,7 @@ InstructionCost LoongArchTTIImpl::getVectorInstrCost(
   if (Opcode == Instruction::ExtractElement && Index == 0 &&
       Val->getScalarType()->isFloatingPointTy() && isSingleVRegType(ST, Val))
     return 0;
-  return BaseT::getVectorInstrCost(Opcode, Val, CostKind, Index, Op0, Op1,
-                                   VIC);
+  return BaseT::getVectorInstrCost(Opcode, Val, CostKind, Index, Op0, Op1, VIC);
 }
 
 InstructionCost LoongArchTTIImpl::getShuffleCost(
@@ -512,6 +511,6 @@ InstructionCost LoongArchTTIImpl::getShuffleCost(
       break;
     }
   }
-  return BaseT::getShuffleCost(Kind, DstTy, SrcTy, CostKind, Mask, Index,
-                               SubTp, Args, CxtI, VIC);
+  return BaseT::getShuffleCost(Kind, DstTy, SrcTy, CostKind, Mask, Index, SubTp,
+                               Args, CxtI, VIC);
 }

``````````

</details>


https://github.com/llvm/llvm-project/pull/233033


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