Revert "[Clang][Interp] __builtin_os_log_format_buffer_size should be an unevaluated builtin (#99895)"

This reverts commit 4572efe.

Reason: Introduced a memory leak that broke the sanitizer buildbots.
More information available in the original pull request
(#99895).

Author: hctim

clang/lib/AST/Interp/ByteCodeEmitter.cpp

@@ -27,8 +27,7 @@ using namespace clang::interp;
 /// Similar information is available via ASTContext::BuiltinInfo,
 /// but that is not correct for our use cases.
 static bool isUnevaluatedBuiltin(unsigned BuiltinID) {
-  return BuiltinID == Builtin::BI__builtin_classify_type ||
-         BuiltinID == Builtin::BI__builtin_os_log_format_buffer_size;
+  return BuiltinID == Builtin::BI__builtin_classify_type;
 }
 
 Function *ByteCodeEmitter::compileFunc(const FunctionDecl *FuncDecl) {

clang/test/CodeGen/builtins.c

@@ -1,7 +1,6 @@
 // RUN: %clang_cc1 -emit-llvm -o %t %s
 // RUN: not grep __builtin %t
 // RUN: %clang_cc1 -emit-llvm -triple x86_64-darwin-apple -o - %s | FileCheck %s
-// RUN: %clang_cc1 -emit-llvm -triple x86_64-darwin-apple -fexperimental-new-constant-interpreter -o - %s | FileCheck %s
 
 int printf(const char *, ...);