[llvm] Add [[maybe_unused]] to a variable used only in assert in VPlan.h (PR #124173)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-transforms

Author: Karlo Basioli (basioli-k)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/124173.diff


1 Files Affected:

- (modified) llvm/lib/Transforms/Vectorize/VPlan.h (+1-1) 


``````````diff
diff --git a/llvm/lib/Transforms/Vectorize/VPlan.h b/llvm/lib/Transforms/Vectorize/VPlan.h
index 42b35e8b57c07d..3dd9c139d8f8c7 100644
--- a/llvm/lib/Transforms/Vectorize/VPlan.h
+++ b/llvm/lib/Transforms/Vectorize/VPlan.h
@@ -2461,7 +2461,7 @@ class VPPartialReductionRecipe : public VPSingleDefRecipe {
       : VPSingleDefRecipe(VPDef::VPPartialReductionSC,
                           ArrayRef<VPValue *>({Op0, Op1}), ReductionInst),
         Opcode(Opcode) {
-    auto *AccumulatorRecipe = getOperand(1)->getDefiningRecipe();
+    [[maybe_unused]] auto *AccumulatorRecipe = getOperand(1)->getDefiningRecipe();
     assert((isa<VPReductionPHIRecipe>(AccumulatorRecipe) ||
             isa<VPPartialReductionRecipe>(AccumulatorRecipe)) &&
            "Unexpected operand order for partial reduction recipe");

``````````

</details>


https://github.com/llvm/llvm-project/pull/124173