Function has_instruction

tests/integration/ir_generation.rs:42–54

(source: &str, pred: F)

        .any(pred)
}

fn count_instructions<F>(source: &str, pred: F) -> usize
where
    F: Fn(&IrInstruction) -> bool,
{
    let result = compile_ok(source);
    result
        .ir_program
        .functions
        .iter()
        .flat_map(|f| f.blocks.iter())
        .flat_map(|b| b.instructions.iter())
        .filter(|i| pred(i))
        .count()
}