Function pass_fail_ir

tests/integration/vm_execution.rs:83–105

Build a minimal pass/fail IR program around an entry block. `entry` must not yet have a terminator; this adds the branch, a pass block (return 0), and a fail block (return 1).

(module: &str, mut entry: IrBlock, cond: IrValue)

    let i32_ty = IrType::Integer(IntWidth::I32);
    let mut program = IrProgram::new(module);
    let mut func = IrFunction::new("main", i32_ty.clone());

    entry.set_terminator(IrTerminator::Branch {
        cond,
        then_label: IrLabel::new("pass"),
        else_label: IrLabel::new("fail"),
    });

    let mut pass_block = IrBlock::new("pass");
    pass_block.set_terminator(IrTerminator::Return(Some(IrValue::Integer(0))));

    let mut fail_block = IrBlock::new("fail");
    fail_block.set_terminator(IrTerminator::Return(Some(IrValue::Integer(1))));

    func.push_block(entry);
    func.push_block(pass_block);
    func.push_block(fail_block);
    program.push_function(func);
    program
}

fn run_hll_file(path: &str) -> (VirtualMachine, StepOutcome, String) {
    let manifest = env!("CARGO_MANIFEST_DIR");
    let full_path = std::path::Path::new(manifest).join(path);
    let src = std::fs::read_to_string(&full_path)
        .unwrap_or_else(|e| panic!("failed to read {path}: {e}"));