src/etc/platform-intrinsics/x86/rdrand.json

{
    "intrinsic_prefix": "_rdrand",
    "llvm_prefix": "llvm.x86.rdrand.",
    "intrinsics": [
        {
            "intrinsic": "16_step",
            "width": ["0"],
            "llvm": "16",
            "ret": "(U16,S32)",
            "args": []
        },
        {
            "intrinsic": "32_step",
            "width": ["0"],
            "llvm": "32",
            "ret": "(U32,S32)",
            "args": []
        },
        {
            "intrinsic": "64_step",
            "width": ["0"],
            "llvm": "64",
            "ret": "(U64,S32)",
            "args": []
        }
    ]
}