diff --git a/llvm/lib/Target/AMDGPU/GCNHazardRecognizer.cpp b/llvm/lib/Target/AMDGPU/GCNHazardRecognizer.cpp
index 7086e86f6a8e..687076aabc89 100644
--- a/llvm/lib/Target/AMDGPU/GCNHazardRecognizer.cpp
+++ b/llvm/lib/Target/AMDGPU/GCNHazardRecognizer.cpp
@@ -399,6 +399,7 @@ int GCNHazardRecognizer::createsVALUHazard(const MachineInstr &MI) {
     int SRsrcIdx = AMDGPU::getNamedOperandIdx(Opcode, AMDGPU::OpName::srsrc);
     assert(SRsrcIdx != -1 &&
            AMDGPU::getRegBitWidth(Desc.OpInfo[SRsrcIdx].RegClass) == 256);
+    (void)SRsrcIdx;
   }
 
   if (TII->isFLAT(MI)) {