[AArch64] Add scheduling model for Neoverse N1

Add the scheduling model for Neoverse N1.

Differential revision: https://reviews.llvm.org/D152417

Author: ebahapo

llvm/lib/Target/AArch64/AArch64.td

@@ -747,6 +747,7 @@ include "AArch64SchedA64FX.td"
 include "AArch64SchedThunderX3T110.td"
 include "AArch64SchedTSV110.td"
 include "AArch64SchedAmpere1.td"
+include "AArch64SchedNeoverseN1.td"
 include "AArch64SchedNeoverseN2.td"
 include "AArch64SchedNeoverseV2.td"
 
@@ -1388,7 +1389,7 @@ def : ProcessorModel<"cortex-x3", NeoverseN2Model, ProcessorFeatures.X3,
                      [TuneX3]>;
 def : ProcessorModel<"neoverse-e1", CortexA53Model,
                      ProcessorFeatures.NeoverseE1, [TuneNeoverseE1]>;
-def : ProcessorModel<"neoverse-n1", CortexA57Model,
+def : ProcessorModel<"neoverse-n1", NeoverseN1Model,
                      ProcessorFeatures.NeoverseN1, [TuneNeoverseN1]>;
 def : ProcessorModel<"neoverse-n2", NeoverseN2Model,
                      ProcessorFeatures.NeoverseN2, [TuneNeoverseN2]>;