[clang] [llvm] [clang] Integrate LLVMABI for function call ABI lowering (PR #194460)

[Nikita Popov via cfe-commits]

================
@@ -28,6 +28,11 @@ CODEGENOPT(Name, Bits, Default, Compatibility)
 #endif
 
 CODEGENOPT(DisableIntegratedAS, 1, 0, Benign) ///< -no-integrated-as
+CODEGENOPT(ExperimentalABILowering, 1, 0, Benign) ///< -fexperimental-abi-lowering:
+                                                  ///< route function ABI lowering
+                                                  ///< through the in-tree LLVMABI
+                                                  ///< library where supported
+                                                  ///< (currently BPF only).
----------------
nikic wrote:

I'd remove the parenthetical, reduce the places to update when additional targets are supported...

https://github.com/llvm/llvm-project/pull/194460