diff --git a/llvm/lib/Target/X86/X86EvexToVex.cpp b/llvm/lib/Target/X86/X86EvexToVex.cpp
index 540ad98b6d54..8155ce3d0bb6 100644
--- a/llvm/lib/Target/X86/X86EvexToVex.cpp
+++ b/llvm/lib/Target/X86/X86EvexToVex.cpp
@@ -250,7 +250,7 @@ bool EvexToVexInstPass::CompressEvexToVexImpl(MachineInstr &MI) const {
     (Desc.TSFlags & X86II::VEX_L) ? makeArrayRef(X86EvexToVex256CompressTable)
                                   : makeArrayRef(X86EvexToVex128CompressTable);
 
-  auto I = llvm::lower_bound(Table, MI.getOpcode());
+  const auto *I = llvm::lower_bound(Table, MI.getOpcode());
   if (I == Table.end() || I->EvexOpcode != MI.getOpcode())
     return false;