[llvm] [clang] [RISCV] Add sifive-p670 processor (PR #79015)

[Craig Topper via llvm-commits]

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@@ -237,6 +237,43 @@ def SIFIVE_P450 : RISCVProcessorModel<"sifive-p450", SiFiveP400Model,
                                        TuneLUIADDIFusion,
                                        TuneAUIPCADDIFusion]>;
 
+def SIFIVE_P670 : RISCVProcessorModel<"sifive-p670", NoSchedModel,
+                                      [Feature64Bit,
+                                       FeatureStdExtZifencei,
+                                       FeatureStdExtM,
+                                       FeatureStdExtA,
+                                       FeatureStdExtF,
+                                       FeatureStdExtD,
+                                       FeatureStdExtC,
+                                       FeatureStdExtZa64rs,
+                                       FeatureStdExtZic64b,
+                                       FeatureStdExtZicbop,
+                                       FeatureStdExtZicbom,
+                                       FeatureStdExtZicboz,
+                                       FeatureStdExtZiccamoa,
+                                       FeatureStdExtZiccif,
+                                       FeatureStdExtZicclsm,
+                                       FeatureStdExtZiccrse,
+                                       FeatureStdExtZihintntl,
+                                       FeatureStdExtZihintpause,
+                                       FeatureStdExtZihpm,
+                                       FeatureStdExtZba,
+                                       FeatureStdExtZbb,
+                                       FeatureStdExtZbs,
+                                       FeatureStdExtZfhmin,
+                                       FeatureStdExtV,
+                                       FeatureStdExtZvl128b,
+                                       FeatureStdExtZvbb,
+                                       FeatureStdExtZvknc,
+                                       FeatureStdExtZvkng,
+                                       FeatureStdExtZvksc,
+                                       FeatureStdExtZvksg,
+                                       FeatureFastUnalignedAccess],
+                                      [TuneNoDefaultUnroll,
+                                       TuneConditionalCompressedMoveFusion,
+                                       TuneLUIADDIFusion,
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topperc wrote:

This should have AUIPC fusion like p450

https://github.com/llvm/llvm-project/pull/79015