diff --git a/include/llvm/CodeGen/GlobalISel/LegalizerInfo.h b/include/llvm/CodeGen/GlobalISel/LegalizerInfo.h
index d38dbf9e0d1..7b7c899e009 100644
--- a/include/llvm/CodeGen/GlobalISel/LegalizerInfo.h
+++ b/include/llvm/CodeGen/GlobalISel/LegalizerInfo.h
@@ -650,6 +650,13 @@ public:
   LegalizeRuleSet &customFor(std::initializer_list<LLT> Types) {
     return actionFor(LegalizeAction::Custom, Types);
   }
+
+  /// The instruction is custom when type indexes 0 and 1 is any type pair in the
+  /// given list.
+  LegalizeRuleSet &customFor(std::initializer_list<std::pair<LLT, LLT>> Types) {
+    return actionFor(LegalizeAction::Custom, Types);
+  }
+
   LegalizeRuleSet &customForCartesianProduct(std::initializer_list<LLT> Types) {
     return actionForCartesianProduct(LegalizeAction::Custom, Types);
   }