---
language:
  - en
license: mit
task_categories:
  - text-generation
tags:
  - assembly
  - transpilation
  - x86-to-arm
  - arm-to-x86
  - security
  - compiler-bugs
  - CISB
size_categories:
  - n<1K
---

# CISB-Bench LLVM-O2: Assembly Transpilation Benchmark

## Overview

This dataset is derived from the **Compiler-Introduced Security Bugs (CISB)** benchmark,
compiled with LLVM/Clang-17 at **-O2** optimization level. It supports **bidirectional
assembly transpilation** (x86-64 ↔ AArch64) and is designed for evaluating transpilation
models on security-critical code.

## Dataset Structure

| Column | Description |
|--------|-------------|
| `task_name` | Full task identifier including flag (e.g., `b-4-var-0-safe`, `b-4-var-0-unsafe`) |
| `flag` | `"safe"` or `"unsafe"` — whether the assembly preserves the security check |
| `source_code` | Original C source from `cisb-bench/<variant>/code.c` (shared by safe/unsafe pairs) |
| `x86_64` | x86-64 assembly (`code.s` from `.build_x86/`) |
| `aarch64_linux` | AArch64 assembly (`code.s` from `.build_arm_linux/`) |
| `test_harness` | C test harness (`test.c`) for correctness verification |

## Statistics

- **Total records**: 72
- **Safe records**: 36
- **Unsafe records**: 36

## Transpilation Directions

This dataset supports both directions:
- **x86 → ARM**: Use `x86_64` as input, `aarch64_linux` as target
- **ARM → x86**: Use `aarch64_linux` as input, `x86_64` as target

## Security Oracle

The test harness returns exit codes:
- `0` → **SAFE** (security check preserved)
- `1` → **UNSAFE** (security check eliminated)
- `2` → **HARNESS_ERROR** (transpilation error)
- `>128` → **CRASH**

## Usage

```python
from datasets import load_dataset

ds = load_dataset("Akirayasha/cisb-bench-llvm-O2", split="test")

# Filter by flag
safe = ds.filter(lambda x: x["flag"] == "safe")
unsafe = ds.filter(lambda x: x["flag"] == "unsafe")

# x86 -> ARM transpilation
record = ds[0]
x86_input = record["x86_64"]
arm_target = record["aarch64_linux"]

# ARM -> x86 transpilation
arm_input = record["aarch64_linux"]
x86_target = record["x86_64"]
```

## Citation

Part of the CISC-to-RISC transpilation research project at MBZUAI.