fac4a915a3
Assert that we never see real registers as arguments to move instructions in VCodeBuilder::collect_operands. Also fix a bug in the riscv64 backend that was discovered by these assertions: the lowerings of get_stack_pointer and get_frame_pointer were using physical registers 8 and 2 directly. The solution was similar to other backends: add a move instruction specifically for moving out of physical registers, whose source operand is opaque to regalloc2.
This crate contains the core Cranelift code generator. It translates code from an intermediate representation into executable machine code.