[clang] [llvm] [MIPS] Add MIPS i6400 and i6500 processors (PR #130587)

[Mallikarjuna Gouda via cfe-commits]

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@@ -43,7 +43,7 @@ class MipsSubtarget : public MipsGenSubtargetInfo {
     Mips3, Mips4, Mips5, Mips64, Mips64r2, Mips64r3, Mips64r5, Mips64r6
   };
 
-  enum class CPU { P5600 };
+  enum class CPU { P5600, I6400 };
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mgoudar wrote:

Thanks for quick review!
yes. i6500 is multi-cluster version of i6400 and both are based on MIPS64 Release 6 ISA.
Hence I kept single subtarget I6400 and reused it in Mips.td for both i6400 and i6500.
I have added comments in the changed file Mips.td and MipsSubTarget.h

https://github.com/llvm/llvm-project/pull/130587