Remove 'enableXXXClustering' methods from RISCVSubtarget.h

We can get the existing enableXXClustering methods to be
autogenerated by prefixing the enums with 'Enable', e.g.
'EnableMISchedLoadClustering', and an autogenerated
'enableMISchedLoadClustering' method will be created.

Author: danielhb

llvm/lib/Target/RISCV/RISCVFeatures.td

@@ -1701,16 +1701,16 @@ def TunePostRAScheduler : SubtargetFeature<"use-postra-scheduler",
     "UsePostRAScheduler", "true", "Schedule again after register allocation">;
 
 def TuneDisableMISchedLoadClustering : SubtargetFeature<"disable-misched-load-clustering",
-    "MISchedLoadClustering", "false", "Disable load clustering in the machine scheduler">;
+    "EnableMISchedLoadClustering", "false", "Disable load clustering in the machine scheduler">;
 
 def TuneDisableMISchedStoreClustering : SubtargetFeature<"disable-misched-store-clustering",
-    "MISchedStoreClustering", "false", "Disable store clustering in the machine scheduler">;
+    "EnableMISchedStoreClustering", "false", "Disable store clustering in the machine scheduler">;
 
 def TuneDisablePostMISchedLoadClustering : SubtargetFeature<"disable-postmisched-load-clustering",
-    "PostMISchedLoadClustering", "false", "Disable PostRA load clustering in the machine scheduler">;
+    "EnablePostMISchedLoadClustering", "false", "Disable PostRA load clustering in the machine scheduler">;
 
 def TuneDisablePostMISchedStoreClustering : SubtargetFeature<"disable-postmisched-store-clustering",
-    "PostMISchedStoreClustering", "false", "Disable PostRA store clustering in the machine scheduler">;
+    "EnablePostMISchedStoreClustering", "false", "Disable PostRA store clustering in the machine scheduler">;
 
 def TuneDisableLatencySchedHeuristic
     : SubtargetFeature<"disable-latency-sched-heuristic", "DisableLatencySchedHeuristic", "true",

llvm/lib/Target/RISCV/RISCVSubtarget.h

@@ -150,14 +150,6 @@ class RISCVSubtarget : public RISCVGenSubtargetInfo {
 
   bool enablePostRAScheduler() const override { return UsePostRAScheduler; }
 
-  bool enableMISchedLoadClustering() const { return MISchedLoadClustering; }
-
-  bool enableMISchedStoreClustering() const { return MISchedStoreClustering; }
-
-  bool enablePostMISchedLoadClustering() const { return PostMISchedLoadClustering; }
-
-  bool enablePostMISchedStoreClustering() const { return PostMISchedStoreClustering; }
-
   Align getPrefFunctionAlignment() const {
     return Align(TuneInfo->PrefFunctionAlignment);
   }