[X86] AMD Genoa (znver4) Scheduler model update

(cherry picked from commit ffdd5a3)

Author: ganeshgit

llvm/lib/Target/X86/X86.td

@@ -695,6 +695,7 @@ include "X86ScheduleSLM.td"
 include "X86ScheduleZnver1.td"
 include "X86ScheduleZnver2.td"
 include "X86ScheduleZnver3.td"
+include "X86ScheduleZnver4.td"
 include "X86ScheduleBdVer2.td"
 include "X86ScheduleBtVer2.td"
 include "X86SchedSkylakeClient.td"
@@ -1627,7 +1628,7 @@ def : ProcModel<"znver2", Znver2Model, ProcessorFeatures.ZN2Features,
                 ProcessorFeatures.ZN2Tuning>;
 def : ProcModel<"znver3", Znver3Model, ProcessorFeatures.ZN3Features,
                 ProcessorFeatures.ZN3Tuning>;
-def : Proc<"znver4",ProcessorFeatures.ZN4Features,
+def : ProcModel<"znver4", Znver4Model, ProcessorFeatures.ZN4Features,
            ProcessorFeatures.ZN4Tuning>;
 
 def : Proc<"geode",           [FeatureX87, FeatureCX8, Feature3DNowA],

llvm/lib/Target/X86/X86PfmCounters.td

@@ -290,4 +290,17 @@ def ZnVer3PfmCounters : ProcPfmCounters {
   ];
 }
 def : PfmCountersBinding<"znver3", ZnVer3PfmCounters>;
-def : PfmCountersBinding<"znver4", ZnVer3PfmCounters>;
+
+def ZnVer4PfmCounters : ProcPfmCounters {
+  let CycleCounter = PfmCounter<"cycles_not_in_halt">;
+  let UopsCounter = PfmCounter<"retired_ops">;
+  let IssueCounters = [
+    PfmIssueCounter<"Zn4Int", "ops_type_dispatched_from_decoder:int_disp_retire_mode">,
+    PfmIssueCounter<"Zn4FPU", "ops_type_dispatched_from_decoder:fp_disp_retire_mode">,
+    PfmIssueCounter<"Zn4Load", "ls_dispatch:ld_dispatch">,
+    PfmIssueCounter<"Zn4Store", "ls_dispatch:store_dispatch">,
+    PfmIssueCounter<"Zn4Divider", "div_op_count">,
+    PfmIssueCounter<"Zn4AGU", "ls_dispatch:ld_st_dispatch + ls_dispatch:ld_dispatch + ls_dispatch:store_dispatch">
+  ];
+}
+def : PfmCountersBinding<"znver4", ZnVer4PfmCounters>;