benshi001 wrote: > gcc doesn't seem to allow it? https://godbolt.org/z/4zh8TTPac
avr-gcc allow value 64 for constraint 'I' in very special case, such as https://github.com/avrdudes/avr-libc/issues/678. And my solution is loosen that check in the frontend, but let the AVR backend to deny the illegal constraint value 64. https://github.com/llvm/llvm-project/pull/136534 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
