Function trampolines

cranelift/filetests/src/function_runner.rs:883–920

()

    #[test]
    fn trampolines() {
        // Skip this test when cranelift doesn't support the native platform.
        if cranelift_native::builder().is_err() {
            return;
        }
        let function = parse(
            "
            function %test(f32, i8, i64x2, i8) -> f32x4, i64 {
            block0(v0: f32, v1: i8, v2: i64x2, v3: i8):
                v4 = vconst.f32x4 [0x0.1 0x0.2 0x0.3 0x0.4]
                v5 = iconst.i64 -1
                return v4, v5
            }",
        );

        let compiler = TestFileCompiler::with_default_host_isa().unwrap();
        let trampoline = make_trampoline(
            UserFuncName::user(0, 0),
            &function.signature,
            compiler.module.isa(),
        );
        println!("{trampoline}");
        assert!(format!("{trampoline}").ends_with(
            "sig0 = (f32, i8, i64x2, i8) -> f32x4, i64 fast

block0(v0: i64, v1: i64):
    v2 = load.f32 notrap aligned v1
    v3 = load.i8 notrap aligned v1+16
    v4 = load.i64x2 notrap aligned little v1+32
    v5 = load.i8 notrap aligned v1+48
    v6, v7 = call_indirect sig0, v0(v2, v3, v4, v5)
    store notrap aligned little v6, v1
    store notrap aligned v7, v1+16
    return
}
"
        ));
    }
}