Function undef_vector_vars

cranelift/frontend/src/frontend.rs:1834–1877

()

    #[test]
    fn undef_vector_vars() {
        let mut sig = Signature::new(CallConv::SystemV);
        sig.returns.push(AbiParam::new(I8X16));
        sig.returns.push(AbiParam::new(I8X16));
        sig.returns.push(AbiParam::new(F32X4));

        let mut fn_ctx = FunctionBuilderContext::new();
        let mut func = Function::with_name_signature(UserFuncName::testcase("sample"), sig);
        {
            let mut builder = FunctionBuilder::new(&mut func, &mut fn_ctx);

            let block0 = builder.create_block();
            let a = builder.declare_var(I8X16);
            let b = builder.declare_var(I8X16);
            let c = builder.declare_var(F32X4);
            builder.switch_to_block(block0);

            let a = builder.use_var(a);
            let b = builder.use_var(b);
            let c = builder.use_var(c);
            builder.ins().return_(&[a, b, c]);

            builder.seal_all_blocks();
            builder.finalize();
        }

        check(
            &func,
            "function %sample() -> i8x16, i8x16, f32x4 system_v {
    const0 = 0x00000000000000000000000000000000

block0:
    v5 = f32const 0.0
    v6 = splat.f32x4 v5  ; v5 = 0.0
    v2 -> v6
    v4 = vconst.i8x16 const0
    v1 -> v4
    v3 = vconst.i8x16 const0
    v0 -> v3
    return v0, v1, v2  ; v0 = const0, v1 = const0
}
",
        );
    }

    #[test]
    fn test_greatest_divisible_power_of_two() {