Function insert_stack_load

cranelift/fuzzgen/src/function_generator.rs:126–150

(
    fgen: &mut FunctionGenerator,
    builder: &mut FunctionBuilder,
    _opcode: Opcode,
    _args: &[Type],
    rets: &[Type],
)

}

fn insert_stack_load(
    fgen: &mut FunctionGenerator,
    builder: &mut FunctionBuilder,
    _opcode: Opcode,
    _args: &[Type],
    rets: &[Type],
) -> Result<()> {
    let typevar = rets[0];
    let type_size = typevar.bytes();
    let (slot, slot_size, _align, category) = fgen.stack_slot_with_size(type_size)?;

    // `stack_load` doesn't support setting MemFlagsData, and it does not set any
    // alias analysis bits, so we can only emit it for `Other` slots.
    if category != AACategory::Other {
        return Err(arbitrary::Error::IncorrectFormat.into());
    }

    let offset = fgen.u.int_in_range(0..=(slot_size - type_size))? as i32;

    let val = builder.ins().stack_load(typevar, slot, offset);
    let var = fgen.get_variable_of_type(typevar)?;
    builder.def_var(var, val);

    Ok(())
}

fn insert_stack_store(
    fgen: &mut FunctionGenerator,