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vxx2 / vlib / v3 / tests / selfhost_backend_prune_test.v
45 lines · 40 sloc · 1.93 KB · 05135764f85a9fbf85752c24673a8232e3d3cc26
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1import os


2


3const vexe = @VEXE


4const tests_dir = os.dir(@FILE)


5const v3_dir = os.dir(tests_dir)


6const v3_src = os.join_path(v3_dir, 'v3.v')


7


8fn build_selfhost_prune_v3() string {


9    v3_bin := os.join_path(os.temp_dir(), 'v3_selfhost_backend_prune_boot_${os.getpid()}')


10    os.rm(v3_bin) or {}


11    build :=


12        os.execute('${os.quoted_path(vexe)} -o ${os.quoted_path(v3_bin)} ${os.quoted_path(v3_src)}')


13    assert build.exit_code == 0, build.output


14    return v3_bin


15}


16


17fn selfhost_to_c(v3_bin string, name string, flags string) string {


18    out_bin := os.join_path(os.temp_dir(), 'v3_selfhost_backend_prune_${name}_${os.getpid()}')


19    out_c := out_bin + '.c'


20    os.rm(out_bin) or {}


21    os.rm(out_c) or {}


22    cmd := '${os.quoted_path(v3_bin)} --no-parallel -selfhost ${flags} -o ${os.quoted_path(out_bin)} ${os.quoted_path(v3_src)}'


23    res := os.execute(cmd)


24    assert res.exit_code == 0, res.output


25    assert os.exists(out_c), 'missing generated C output ${out_c}'


26    return os.read_file(out_c) or { panic(err) }


27}


28


29fn test_selfhost_default_prunes_optional_backends() {


30    v3_bin := build_selfhost_prune_v3()


31    c_src := selfhost_to_c(v3_bin, 'default', '')


32    assert !c_src.contains('v3__gen__wasm__'), 'default self-host compiled the wasm backend'


33    assert !c_src.contains('v3__gen__arm64__'), 'default self-host compiled the arm64 backend'


34    assert !c_src.contains('v3__ssa__'), 'default self-host compiled the SSA backend'


35    assert !c_src.contains('v3__eval__'), 'default self-host compiled the eval backend'


36}


37


38fn test_selfhost_compile_backend_wasm_opts_wasm_back_in() {


39    v3_bin := build_selfhost_prune_v3()


40    c_src := selfhost_to_c(v3_bin, 'wasm', '-compile-backend wasm')


41    assert c_src.contains('v3__gen__wasm__Gen__new'), 'wasm backend was not compiled after opt-in'


42    assert !c_src.contains('v3__gen__arm64__'), 'wasm opt-in compiled the arm64 backend'


43    assert !c_src.contains('v3__ssa__'), 'wasm opt-in compiled the SSA backend'


44    assert !c_src.contains('v3__eval__'), 'wasm opt-in compiled the eval backend'


45}


46