[llvm] [AArch64] Add constant pool load cost for non-uniform vector constant stores (PR #217402)

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Wed Aug 19 10:47:22 PDT 2026


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git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp --diff_from_common_commit
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``````````diff
diff --git a/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp b/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
index 96f10aa80..91db70473 100644
--- a/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
+++ b/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
@@ -5671,9 +5671,9 @@ InstructionCost AArch64TTIImpl::getMemoryOpCost(unsigned Opcode, Type *Ty,
   InstructionCost ConstMatCost = 0;
   if (Opcode == Instruction::Store && OpInfo.isConstant() &&
       !OpInfo.isUniform() && isa<FixedVectorType>(Ty))
-    ConstMatCost = getMemoryOpCost(Instruction::Load, Ty,
-                                   DL.getABITypeAlign(Ty),
-                                   /*AddressSpace=*/0, CostKind);
+    ConstMatCost =
+        getMemoryOpCost(Instruction::Load, Ty, DL.getABITypeAlign(Ty),
+                        /*AddressSpace=*/0, CostKind);
 
   if (ST->isMisaligned128StoreSlow() && Opcode == Instruction::Store &&
       LT.second.is128BitVector() && Alignment < Align(16)) {
@@ -5698,8 +5698,7 @@ InstructionCost AArch64TTIImpl::getMemoryOpCost(unsigned Opcode, Type *Ty,
       if (VT == MVT::v4i8)
         return ConstMatCost + 2;
       // Otherwise we need to scalarize.
-      return ConstMatCost +
-             cast<FixedVectorType>(Ty)->getNumElements() * 2;
+      return ConstMatCost + cast<FixedVectorType>(Ty)->getNumElements() * 2;
     }
     EVT EltVT = VT.getVectorElementType();
     unsigned EltSize = EltVT.getScalarSizeInBits();

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https://github.com/llvm/llvm-project/pull/217402


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