https://www.phoronix.com/scan.php?page=news_item&px=Intel-LLVM-Adoption-C-CPP
Intel is recommending all new projects make use of their LLVM-based Intel C/C++ compilers and existing projects should plan to migrate to the new compiler this year. Their "classic" Intel C/C++ compilers will transition to legacy mode at the end of regular updates. James added, "The new LLVM-based Intel C/C++ has reached parity with the classic version, and the LLVM-based C/C++ offers the best optimization technology we have. We suggest all users should try the new C/C++ compiler now, enjoy the benefits, and provide feedback."
Ну и о недостатках открытых лицензий:
their oneAPI DPC++/C++ Compiler 2021.3 is said to offer 41% faster performance than GCC 11.1 and similar margins to LLVM 12.
Был бы GPL, тогда бы поделились патчами :)
Хотя у них есть https://github.com/intel/llvm , может там и можно что-то найти
Топ вопрос из комментариев с phoronix:
What’s the purpose of creating another C++ compiler on top of LLVM instead of just contributing to Clang?