[clang] [llvm] [RISCV] Add processor definition for XiangShan-KunMingHu (PR #89359)

[Yingwei Zheng via llvm-commits]

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@@ -378,3 +378,30 @@ def XIANGSHAN_NANHU : RISCVProcessorModel<"xiangshan-nanhu",
                                             TuneZExtHFusion,
                                             TuneZExtWFusion,
                                             TuneShiftedZExtWFusion]>;
+def XIANGSHAN_KUNMINGHU : RISCVProcessorModel<"xiangshan-kunminghu",
+                                              NoSchedModel,
+                                              [Feature64Bit,
+                                               FeatureStdExtI,
+                                               FeatureStdExtZicsr,
+                                               FeatureStdExtZifencei,
+                                               FeatureStdExtM,
+                                               FeatureStdExtA,
+                                               FeatureStdExtF,
+                                               FeatureStdExtD,
+                                               FeatureStdExtC,
+                                               FeatureStdExtZba,
+                                               FeatureStdExtZbb,
+                                               FeatureStdExtZbc,
+                                               FeatureStdExtZbs,
+                                               FeatureStdExtZkn,
+                                               FeatureStdExtZksed,
+                                               FeatureStdExtZksh,
+                                               FeatureStdExtSvinval,
+                                               FeatureStdExtZicbom,
+                                               FeatureStdExtZicboz,
+                                               FeatureStdExtV,
+                                               FeatureStdExtZvl128b],
+                                               [TuneNoDefaultUnroll,
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dtcxzyw wrote:

Can you provide some performance data about these options?
IIRC KunMingHu core supports the `lui + addi` fusion.


https://github.com/llvm/llvm-project/pull/89359