[clang] [llvm] [clang] Add support for the c2000 architecture (PR #125663)

[Fangrui Song via cfe-commits]

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@@ -430,6 +430,7 @@ static const DriverSuffix *FindDriverSuffix(StringRef ProgName, size_t &Pos) {
       // `flang-new`. This will be removed in the future.
       {"flang-new", "--driver-mode=flang"},
       {"clang-dxc", "--driver-mode=dxc"},
+      {"cl2000", "--driver-mode=cl2000"},
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MaskRay wrote:

I strongly object to introduce a new driver mode without a very active community and full-blown support (including codegen). You can see taht all the existing ones are not added lightly. There are very heavy commitment on the maintenance (e.g. flang, dxc). It would not significant maintenance nightmare if every downstream target without codegen support adds a driver mode here.

https://github.com/llvm/llvm-project/pull/125663