Function insert_bitcast

cranelift/fuzzgen/src/function_generator.rs:248–271

(
    fgen: &mut FunctionGenerator,
    builder: &mut FunctionBuilder,
    args: &[Type],
    rets: &[Type],
)

}

fn insert_bitcast(
    fgen: &mut FunctionGenerator,
    builder: &mut FunctionBuilder,
    args: &[Type],
    rets: &[Type],
) -> Result<()> {
    let from_var = fgen.get_variable_of_type(args[0])?;
    let from_val = builder.use_var(from_var);

    let to_var = fgen.get_variable_of_type(rets[0])?;

    // TODO: We can generate little/big endian flags here.
    let mut memflags = MemFlagsData::new();

    // When bitcasting between vectors of different lane counts, we need to
    // specify the endianness.
    if args[0].lane_count() != rets[0].lane_count() {
        memflags.set_endianness(Endianness::Little);
    }

    let res = builder.ins().bitcast(rets[0], memflags, from_val);
    builder.def_var(to_var, res);
    Ok(())
}

fn insert_load_store(
    fgen: &mut FunctionGenerator,