[clang] [llvm] [RISCV] Add MIPS extensions (PR #121394)

[Craig Topper via cfe-commits]

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@@ -1395,6 +1395,19 @@ def NoConditionalMoveFusion  : Predicate<"!Subtarget->hasConditionalMoveFusion()
 def TuneMIPSP8700
     : SubtargetFeature<"mips-p8700", "RISCVProcFamily", "MIPSP8700",
                        "MIPS p8700 processor">;
+def FeatureVendorMIPSCMove : SubtargetFeature<"xmipscmove", "HasVendorMIPSCMove",
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topperc wrote:

FeatureVendor* should be in the vendor extension section of this file not the tuning section.

https://github.com/llvm/llvm-project/pull/121394