[clang] [clang] Implement function pointer signing and authenticated function calls (PR #93906)

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git-clang-format --diff 7c814c13d0df6dbd0ef6a8b2be214d3f6edbb566 99b2bf2e1f70ed6f374a380f91a707c2acd8a318 --extensions 'cpp,h,c' -- clang/lib/CodeGen/CGPointerAuthInfo.h clang/test/CodeGen/ptrauth-function-attributes.c clang/test/CodeGen/ptrauth-function-init-fail.c clang/test/CodeGen/ptrauth-function-init.c clang/test/CodeGen/ptrauth-function-lvalue-cast.c clang/test/CodeGen/ptrauth-function.c clang/test/CodeGen/ptrauth-weak_import.c clang/test/CodeGenCXX/ptrauth.cpp clang/include/clang/Basic/CodeGenOptions.h clang/include/clang/Basic/PointerAuthOptions.h clang/include/clang/Frontend/CompilerInvocation.h clang/lib/CodeGen/CGBuiltin.cpp clang/lib/CodeGen/CGCall.cpp clang/lib/CodeGen/CGCall.h clang/lib/CodeGen/CGExpr.cpp clang/lib/CodeGen/CGExprConstant.cpp clang/lib/CodeGen/CGPointerAuth.cpp clang/lib/CodeGen/CodeGenFunction.cpp clang/lib/CodeGen/CodeGenFunction.h clang/lib/CodeGen/CodeGenModule.h clang/lib/Frontend/CompilerInvocation.cpp clang/lib/Headers/ptrauth.h
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View the diff from clang-format here.
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diff --git a/clang/include/clang/Basic/PointerAuthOptions.h b/clang/include/clang/Basic/PointerAuthOptions.h
index aaad4a2b2b..2851958a80 100644
--- a/clang/include/clang/Basic/PointerAuthOptions.h
+++ b/clang/include/clang/Basic/PointerAuthOptions.h
@@ -35,12 +35,7 @@ public:
   /// Hardware pointer-signing keys in ARM8.3.
   ///
   /// These values are the same used in ptrauth.h.
-  enum class ARM8_3Key : unsigned {
-    ASIA = 0,
-    ASIB = 1,
-    ASDA = 2,
-    ASDB = 3
-  };
+  enum class ARM8_3Key : unsigned { ASIA = 0, ASIB = 1, ASDA = 2, ASDB = 3 };
 
   /// Forms of extra discrimination.
   enum class Discrimination : unsigned {

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https://github.com/llvm/llvm-project/pull/93906