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

[Craig Topper via llvm-commits]

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@@ -1448,3 +1448,18 @@ def FeatureTaggedGlobals : SubtargetFeature<"tagged-globals",
     "AllowTaggedGlobals",
     "true", "Use an instruction sequence for taking the address of a global "
     "that allows a memory tag in the upper address bits">;
+
+def FeatureVendorMIPSCMove : SubtargetFeature<"xmipscmove", "HasVendorMIPSCMove",
+                                       "true", "Using CCMov",
+                                       [Feature64Bit]>;
+def HasVendorMIPSCMove
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topperc wrote:

I think I would rather see this split into `HasVendorMIPSCMove` for assembler, and `UseCCMovInsn` for isel patterns.

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