[gn build] Port e665925

Author: llvmgnsyncbot

llvm/utils/gn/secondary/llvm/tools/llvm-reduce/BUILD.gn

@@ -47,9 +47,10 @@ executable("llvm-reduce") {
     "deltas/ReduceRegisterDefs.cpp",
     "deltas/ReduceRegisterMasks.cpp",
     "deltas/ReduceRegisterUses.cpp",
-    "deltas/ReduceTargetFeaturesAttr.cpp",
     "deltas/ReduceSpecialGlobals.cpp",
+    "deltas/ReduceTargetFeaturesAttr.cpp",
     "deltas/ReduceUsingSimplifyCFG.cpp",
+    "deltas/ReduceValuesToReturn.cpp",
     "deltas/ReduceVirtualRegisters.cpp",
     "deltas/RunIRPasses.cpp",
     "deltas/SimplifyInstructions.cpp",