Hi all, ARM Cortex-A53 CPU stalls during the execution of a bare metal application containing the following assembly instruction: ucvtf s0, s0 According to the A64 ISA, UCVTF instruction doesn't allow floating-point registers as source registers, but executing the same instruction in qemu-arm user mode yields a correct result. I am wondering whether this is a compiler bug, or is there something I am missing? Source code was compiled by the aarch64-none-eabi-gcc (version 8.2.0) compiler, with -O3 and -fno-strict-aliasing flags. I am currently working on creating a minimal reproducer, so I could provide it if necessary. Note that manually modifying the assembly file to use a general-purpose register as a source fixes this behaviour. Best regards, Mihailo
