diff --git a/clang/lib/AST/Interp/ByteCodeExprGen.cpp b/clang/lib/AST/Interp/ByteCodeExprGen.cpp
index de02418076503..fcdfe19bd8443 100644
--- a/clang/lib/AST/Interp/ByteCodeExprGen.cpp
+++ b/clang/lib/AST/Interp/ByteCodeExprGen.cpp
@@ -865,6 +865,11 @@ bool ByteCodeExprGen<Emitter>::VisitMaterializeTemporaryExpr(
   const Expr *SubExpr = E->getSubExpr();
   std::optional<PrimType> SubExprT = classify(SubExpr);
 
+  // If we don't end up using the materialized temporary anyway, don't
+  // bother creating it.
+  if (DiscardResult)
+    return this->discard(SubExpr);
+
   if (E->getStorageDuration() == SD_Static) {
     if (std::optional<unsigned> GlobalIndex = P.createGlobal(E)) {
       const LifetimeExtendedTemporaryDecl *TempDecl =
diff --git a/clang/test/AST/Interp/literals.cpp b/clang/test/AST/Interp/literals.cpp
index ad0adc23b42e4..505ab8fc764f1 100644
--- a/clang/test/AST/Interp/literals.cpp
+++ b/clang/test/AST/Interp/literals.cpp
@@ -890,7 +890,9 @@ constexpr int ignoredExprs() {
 
   1 ? 0 : 1; // expected-warning {{unused}} \
              // ref-warning {{unused}}
-
+  /// Ignored MaterializeTemporaryExpr.
+  struct B{ const int &a; };
+  (void)B{12};
   return 0;
 }