diff --git a/llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp b/llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp
index af5fd87a898e..7d2b40a02859 100644
--- a/llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp
@@ -316,6 +316,21 @@ adderGenerator(const int32_t From, const int32_t To, const int32_t StepSize) {
   };
 }
 
+// Move to the next generator if it is exhausted allowing to chain generators
+std::function<std::optional<int32_t>()> concatGenerators(
+    std::vector<std::function<std::optional<int32_t>()>> Generators) {
+  auto GeneratorIterator = Generators.cbegin();
+
+  return [GeneratorIterator, Generators]() mutable {
+    std::optional<int32_t> GenValue = (*GeneratorIterator)();
+    if (!GenValue.has_value() && GeneratorIterator != Generators.cend()) {
+      GeneratorIterator++;
+      GenValue = (*GeneratorIterator)();
+    }
+    return GenValue;
+  };
+}
+
 Register CombinerHelper::createUnmergeValue(MachineInstr &MI,
                                             const Register SrcReg,
                                             const Register DstReg,