[llvm] [NFC][AMDGPU] Fix unused-variable warning (PR #81040)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-amdgpu

Author: Pranav Kant (pranavk)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/81040.diff


1 Files Affected:

- (modified) llvm/lib/Target/AMDGPU/SIISelLowering.cpp (+1-1) 


``````````diff
diff --git a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
index 4faf808775112..a64a9e608f217 100644
--- a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
+++ b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
@@ -12016,7 +12016,7 @@ static SDValue getDWordFromOffset(SelectionDAG &DAG, SDLoc SL, SDValue Src,
 
 static SDValue matchPERM(SDNode *N, TargetLowering::DAGCombinerInfo &DCI) {
   SelectionDAG &DAG = DCI.DAG;
-  EVT VT = N->getValueType(0);
+  [[maybe_unused]] EVT VT = N->getValueType(0);
   SmallVector<ByteProvider<SDValue>, 8> PermNodes;
 
   // VT is known to be MVT::i32, so we need to provide 4 bytes.

``````````

</details>


https://github.com/llvm/llvm-project/pull/81040