[clang] [CIR] Initial implementation of lowering CIR to MLIR (PR #127835)

[Valentin Clement バレンタイン クレメン via cfe-commits]

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@@ -2958,6 +2958,8 @@ defm clangir : BoolFOption<"clangir",
   BothFlags<[], [ClangOption, CC1Option], "">>;
 def emit_cir : Flag<["-"], "emit-cir">, Visibility<[ClangOption, CC1Option]>,
   Group<Action_Group>, HelpText<"Build ASTs and then lower to ClangIR">;
+def emit_cir_mlir : Flag<["-"], "emit-cir-mlir">, Visibility<[CC1Option]>, Group<Action_Group>,
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clementval wrote:

I double checked in flang and we have a couple of tests (7 files) using that option but we can switch these to use `-emit-fir` or -`emit-hlfir`. 

@banach-space Since you are probably the initial author of this option, do you have any objection to make `-emit-mlir` identical for clang and flang? 



https://github.com/llvm/llvm-project/pull/127835