[clang] [llvm] [PowerPC] Add BCDCOPYSIGN and BCDSETSIGN Instruction Support (PR #144874)

[Aditi Medhane via cfe-commits]

================
@@ -580,6 +580,8 @@ TARGET_BUILTIN(__builtin_ppc_bcdsub_p, "iiV16UcV16Uc", "",
                "isa-v207-instructions")
 
 // P9 Binary-coded decimal (BCD) builtins.                                                
+TARGET_BUILTIN(__builtin_ppc_bcdcopysign, "V16UcV16UcV16Uc", "", "power9-vector")
+TARGET_BUILTIN(__builtin_ppc_bcdsetsign, "V16UcV16UcUc", "t", "power9-vector")
----------------
AditiRM wrote:

Will implement this in the next NFC patch as discussed.

https://github.com/llvm/llvm-project/pull/144874