[clang] [PAuth] Use different discriminators for __int128_t / __uint128_t / _BitInt(n) (PR #140276)

[Oliver Hunt via cfe-commits]

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@@ -4451,6 +4451,8 @@ defm ptrauth_init_fini_address_discrimination : OptInCC1FFlag<"ptrauth-init-fini
   "Enable address discrimination of function pointers in init/fini arrays">;
 defm ptrauth_elf_got : OptInCC1FFlag<"ptrauth-elf-got", "Enable authentication of pointers from GOT (ELF only)">;
 defm aarch64_jump_table_hardening: OptInCC1FFlag<"aarch64-jump-table-hardening", "Use hardened lowering for jump-table dispatch">;
+defm ptrauth_disable_128bit_type_discrimination : OptInCC1FFlag<"ptrauth-disable-128bit-type-discrimination",
+  "Do not use different discriminators for __int128_t / __uint128_t / _BitInt(n) compared to other integer types when computing function pointer type discriminator">;
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ojhunt wrote:

it remains irksome that we need to duplicate the description for an option in the table def and the macro (not an issue with your PR, just an old man shaking fists at clouds :D )

https://github.com/llvm/llvm-project/pull/140276