diff --git a/llvm/lib/Target/AArch64/AArch64.td b/llvm/lib/Target/AArch64/AArch64.td
--- a/llvm/lib/Target/AArch64/AArch64.td
+++ b/llvm/lib/Target/AArch64/AArch64.td
@@ -816,8 +816,9 @@
                                      FeaturePostRAScheduler,
                                      FeaturePredictableSelectIsExpensive]>;
 
-def TuneExynosM4 : SubtargetFeature<"exynosm3", "ARMProcFamily", "ExynosM3",
-                                    "Samsung Exynos-M3 processors",
+// Re-uses some scheduling and tunings from the ExynosM3 proc family.
+def TuneExynosM4 : SubtargetFeature<"exynosm4", "ARMProcFamily", "ExynosM3",
+                                    "Samsung Exynos-M4 processors",
                                     [FeatureArithmeticBccFusion,
                                      FeatureArithmeticCbzFusion,
                                      FeatureExynosCheapAsMoveHandling,