#!/usr/bin/env python3
#
#  Copyright (c) 2013-2024, Intel Corporation
#
#  SPDX-License-Identifier: BSD-3-Clause

# // Author: Filippov Ilia

from collections import OrderedDict
from enum import Enum, auto
import re
import traceback

class SelfbuildType(Enum):
    # not a selfbuild
    SINGLE = auto()
    # complete selfbuild
    SELF = auto()
    # first phase of selfbuild only
    SELF_PHASE1 = auto()
    # second phase of selfbuild only
    SELF_PHASE2 = auto()

def alloy_error(line, error_type = 1):
    global return_status
    if error_type == 1:
        return_status = 1
    common.error(line, error_type)

def tail_and_save(file_in, file_out, tail = 100):
    with open(file_in, 'r') as f_in:
        lines = f_in.readlines()[-tail:]

    with open(file_out, 'w') as f_out:
        f_out.writelines(lines)


def setting_paths(llvm, ispc, sde):
    if llvm != "":
        os.environ["LLVM_HOME"]=llvm
    if ispc != "":
        os.environ["ISPC_HOME"]=ispc
    if sde != "":
        os.environ["SDE_HOME"]=sde

def get_sde():
    sde_exe = ""
    PATH_dir = os.environ["PATH"].split(os.pathsep)
    if current_OS == "Windows":
        sde_n = "sde.exe"
    else:
        sde_n = "sde"
    for counter in PATH_dir:
        if os.path.exists(counter + os.sep + sde_n) and sde_exe == "":
            sde_exe = counter + os.sep + sde_n
    if os.environ.get("SDE_HOME") != None:
        if os.path.exists(os.environ.get("SDE_HOME") + os.sep + sde_n):
            sde_exe = os.environ.get("SDE_HOME") + os.sep + sde_n
    return sde_exe

def check_LLVM(which_LLVM):
    answer = []
    if which_LLVM[0] == " ":
        return answer
    p = os.environ["LLVM_HOME"]
    for i in range(0,len(which_LLVM)):
        if not os.path.exists(p + os.sep + "bin-" + which_LLVM[i] + os.sep + "bin"):
            answer.append(which_LLVM[i])
    return answer

def try_do_LLVM(text, command, from_validation, verbose=False):
    print_debug("Command line: "+command+"\n", True, alloy_build)
    if from_validation == True:
        text = text + "\n"
    print_debug("Trying to " + text + " ", from_validation, alloy_build)

    with subprocess.Popen(command, shell=True,universal_newlines=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT) as proc:
        for line in proc.stdout:
            print_debug(line, not verbose, alloy_build)
    proc.wait()
    exit_status = proc.returncode
    if exit_status != 0:
        print_debug("ERROR.\n", from_validation, alloy_build)
        alloy_error("can't " + text, 1)
    print_debug("DONE.\n", from_validation, alloy_build)

def checkout_LLVM(component, version_LLVM, target_dir, from_validation, verbose):
    # Identify the component
    GIT_REPO_BASE="https://github.com/llvm/llvm-project.git"

    # Identify the version
    # An example of using branch (instead of final tag) is the following (for 16.0):
    # git: "release/16.x"
    if  version_LLVM == "trunk":
        GIT_TAG="main"
    elif  version_LLVM == "19_1":
        GIT_TAG="llvmorg-19.1.1"
    elif  version_LLVM == "18_1":
        GIT_TAG="llvmorg-18.1.8"
    elif  version_LLVM == "17_0":
        GIT_TAG="llvmorg-17.0.6"
    elif  version_LLVM == "16_0":
        GIT_TAG="llvmorg-16.0.6"
    elif  version_LLVM == "15_0":
        GIT_TAG="llvmorg-15.0.7"
    elif  version_LLVM == "14_0":
        GIT_TAG="llvmorg-14.0.6"
    elif  version_LLVM == "13_0":
        GIT_TAG="llvmorg-13.0.1"
    elif  version_LLVM == "12_0":
        GIT_TAG="llvmorg-12.0.1"
    elif  version_LLVM == "11_1":
        GIT_TAG="llvmorg-11.1.0"
    elif  version_LLVM == "11_0":
        GIT_TAG="llvmorg-11.0.1"
    elif  version_LLVM == "10_0":
        GIT_TAG="llvmorg-10.0.1"
    elif  version_LLVM == "9_0":
        GIT_TAG="llvmorg-9.0.1"
    elif  version_LLVM == "8_0":
        GIT_TAG="llvmorg-8.0.1"
    elif  version_LLVM == "7_1":
        GIT_TAG="llvmorg-7.1.0"
    elif  version_LLVM == "7_0":
        GIT_TAG="llvmorg-7.0.1"
    elif  version_LLVM == "6_0":
        GIT_TAG="llvmorg-6.0.1"
    else:
        alloy_error("Unsupported llvm version: " + version_LLVM, 1)

    depth = "" if options.full_checkout else "--depth=1 --shallow-submodules"
    git_clone_cmd = f"git clone {depth} --branch {GIT_TAG} {GIT_REPO_BASE} {target_dir}"
    try_do_LLVM(f"clone {component} with tag {GIT_TAG} from {GIT_REPO_BASE} to {target_dir}",
                git_clone_cmd, from_validation, verbose)

def get_llvm_disable_assertions_switch(llvm_disable_assertions):
    if llvm_disable_assertions == True:
        return "  -DLLVM_ENABLE_ASSERTIONS=OFF"
    else:
        return "  -DLLVM_ENABLE_ASSERTIONS=ON"

def build_LLVM(version_LLVM, folder, debug, selfbuild, extra, openmp, from_validation, force, make, gcc_toolchain_path, llvm_disable_assertions, verbose, macos_version_min, macos_universal_bin):
    print_debug("Building LLVM. Version: " + version_LLVM + ".\n", from_validation, alloy_build)
    # Here we understand what and where do we want to build
    current_path = os.getcwd()
    llvm_home = os.environ["LLVM_HOME"]

    make_sure_dir_exists(llvm_home)

    FOLDER_NAME=version_LLVM
    version_LLVM = re.sub(r'\.', '_', version_LLVM)

    os.chdir(llvm_home)
    if folder == "":
        folder = FOLDER_NAME
    if debug == True:
        folder = folder + "dbg"
    LLVM_SRC="llvm-" + folder
    LLVM_BUILD="build-" + folder
    LLVM_BIN="bin-" + folder
    if os.path.exists(LLVM_BIN + os.sep + "bin") and not force:
        alloy_error("you have folder " + LLVM_BIN + ".\nIf you want to rebuild use --force", 1)
    LLVM_BUILD_selfbuild = LLVM_BUILD + "_temp"
    LLVM_BIN_selfbuild = LLVM_BIN + "_temp"

    # Selfbuild phase2 assumes that directories are already create, for all other cases, create them.
    if selfbuild is SelfbuildType.SINGLE or selfbuild is SelfbuildType.SELF or selfbuild is SelfbuildType.SELF_PHASE1:
        common.remove_if_exists(LLVM_SRC)
        common.remove_if_exists(LLVM_BUILD)
        common.remove_if_exists(LLVM_BIN)
    if selfbuild is SelfbuildType.SELF or selfbuild is SelfbuildType.SELF_PHASE1:
        common.remove_if_exists(LLVM_BUILD_selfbuild)
        common.remove_if_exists(LLVM_BIN_selfbuild)
    print_debug("Using folders: " + LLVM_SRC + " " + LLVM_BUILD + " " + LLVM_BIN + " in " +
        llvm_home + "\n", from_validation, alloy_build)

    # Starting from MacOS 10.9 Maverics, C and C++ library headers are part of the SDK, not the OS itself.
    # System root must be specified during the compiler build, so the compiler knows the default location to search for headers.
    # C headers are located at system root location, while C++ headers are part of the toolchain.
    # I.e. specifying system root solved C header problem. For C++ headers we enable libc++ build as part of clang build (our own toolchain).
    # Note that on Sierra there's an issue with using C headers from High Sierra SDK, which instantiates as compile error:
    #     error: 'utimensat' is only available on macOS 10.13 or newer
    # This is due to using SDK targeting OS, which is newer than current one.
    mac_system_root = ""
    if current_OS == "MacOS" \
        and int(current_OS_version.split(".")[0]) >= 13:
        search_path = os.environ["PATH"].split(os.pathsep)
        found_xcrun = False
        for path in search_path:
            if os.path.exists(os.path.join(path, "xcrun")):
                found_xcrun = True
        if found_xcrun:
            mac_system_root = "`xcrun --show-sdk-path`"
        else:
            alloy_error("Can't find XCode (xcrun tool) - it's required on MacOS 10.9 and newer", 1)

    # prepare configuration parameters
    llvm_enable_runtimes = ""
    if current_OS == "MacOS" and int(current_OS_version.split(".")[0]) >= 13:
        # Starting with MacOS 10.9 Maverics, the system doesn't contain headers for standard C++ library and
        # the default library is libc++, bit libstdc++. The headers are part of XCode now. But we are checking out
        # headers as part of LLVM source tree, so they will be installed in clang location and clang will be able
        # to find them. Though they may not match to the library installed in the system, but seems that this should
        # not happen.
        # Note, that we can also build a libc++ library, but it must be on system default location or should be passed
        # to the linker explicitly (either through command line or environment variables). So we are not doing it
        # currently to make the build process easier.

        # We either need to explicitly opt-out from using libcxxabi from this repo, or build and use it,
        # otherwise a build error will occure (attempt to use just built libcxxabi, which was not built).
        # An option to build seems to be a better one.
        llvm_enable_runtimes +=" -DLLVM_ENABLE_RUNTIMES=\"libcxx;libcxxabi;libunwind\""

    # macOS deployment target sets the minimim OS requirement to run the compiled program.
    # All of the object files and static libraries passed to the linker need to be compiled for the same
    # version of the macOS to enable resulting executable to be able to run on the older macOS.
    # So we build LLVM for old macOS to enable ISPC builds targeting an old macOS.
    osx_deployment = ""
    if current_OS == "MacOS" and macos_version_min != "":
        osx_deployment = f"  -DCMAKE_OSX_DEPLOYMENT_TARGET={macos_version_min}"
        print_debug(f"Targeting macOS {macos_version_min}\n", from_validation, alloy_build)

    # macOS Universal Binaries is a fat binary for x86_64 and arm64.
    # This doesn't affect self-build phase1, as this binary is assumed to be used only once to build phase2.
    osx_universal = ""
    if current_OS == "MacOS" and macos_universal_bin:
        osx_universal = "  -DCMAKE_OSX_ARCHITECTURES=\"x86_64;arm64\""
        print_debug("Building Universal Binary for macOS (x86_64 + arm64)\n", from_validation, alloy_build)

    llvm_enable_projects = llvm_enable_runtimes + " -DLLVM_ENABLE_PROJECTS=\"clang"
    if current_OS == "Linux" and openmp == True:
        # OpenMP may be needed for Xe enabled builds.
        # Starting from Ubuntu 20.04 libomp-dev package doesn't install omp.h to default location.
        llvm_enable_projects +=";openmp"
    if extra == True:
        llvm_enable_projects +=";compiler-rt;clang-tools-extra"
    llvm_enable_projects += "\""

    if selfbuild is SelfbuildType.SINGLE or selfbuild is SelfbuildType.SELF or selfbuild is SelfbuildType.SELF_PHASE1:
        # clone llvm repo
        checkout_LLVM("llvm", version_LLVM, LLVM_SRC, from_validation, verbose)

        # patch llvm
        os.chdir(LLVM_SRC)
        patches = glob.glob(os.environ["ISPC_HOME"] + os.sep + "llvm_patches" + os.sep + "*.*")
        for patch in patches:
            if version_LLVM in os.path.basename(patch):
                try_do_LLVM("patch LLVM with patch " + patch, "git apply " + patch, from_validation, verbose)
        os.chdir("../")

    targets_and_common_options = r"  -DLLVM_ENABLE_ZLIB=OFF -DLLVM_ENABLE_ZSTD=OFF -DLLVM_TARGETS_TO_BUILD=AArch64\;ARM\;X86 -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=WebAssembly"

    # Build without terminfo support. Starting from 19.0 it's the default and the options is removed.
    if version_LLVM < "19_0":
        targets_and_common_options += " -DLLVM_ENABLE_TERMINFO=OFF"

    # configuring llvm and build for first phase of selfbuild
    cmakelists_path = LLVM_SRC + "/llvm"
    if selfbuild is SelfbuildType.SELF or selfbuild is SelfbuildType.SELF_PHASE1:
        print_debug("Making selfbuild and use folders " + LLVM_BUILD_selfbuild + " and " +
            LLVM_BIN_selfbuild + "\n", from_validation, alloy_build)
        os.makedirs(LLVM_BUILD_selfbuild)
        os.makedirs(LLVM_BIN_selfbuild)
        os.chdir(LLVM_BUILD_selfbuild)
        try_do_LLVM("configure release version for selfbuild",
                "cmake -G " + "\"" + generator + "\"" + " -DCMAKE_EXPORT_COMPILE_COMMANDS=ON" +
                "  -DCMAKE_INSTALL_PREFIX=" + llvm_home + "/" + LLVM_BIN_selfbuild +
                "  -DCMAKE_BUILD_TYPE=Release" +
                llvm_enable_projects +
                get_llvm_disable_assertions_switch(llvm_disable_assertions) +
                "  -DLLVM_INSTALL_UTILS=ON" +
                (("  -DGCC_INSTALL_PREFIX=" + gcc_toolchain_path) if gcc_toolchain_path != "" else "") +
                (("  -DCMAKE_C_COMPILER=" + gcc_toolchain_path+"/bin/gcc") if gcc_toolchain_path != "" else "") +
                (("  -DCMAKE_CXX_COMPILER=" + gcc_toolchain_path+"/bin/g++") if gcc_toolchain_path != "" else "") +
                (("  -DDEFAULT_SYSROOT=" + mac_system_root) if mac_system_root != "" else "") +
                osx_deployment +
                targets_and_common_options +
                " ../" + cmakelists_path,
                from_validation, verbose)
        try_do_LLVM("build release version for selfbuild", make, from_validation, verbose)
        try_do_LLVM("install release version for selfbuild" , "make install", from_validation, verbose)
        os.chdir("../")

    # set compiler to use if this is selfbuild
    selfbuild_compiler = ""
    if selfbuild is SelfbuildType.SELF or selfbuild is SelfbuildType.SELF_PHASE2:
        selfbuild_compiler = ("  -DCMAKE_C_COMPILER=" +llvm_home+ "/" + LLVM_BIN_selfbuild + "/bin/clang " +
                              "  -DCMAKE_CXX_COMPILER="+llvm_home+ "/" + LLVM_BIN_selfbuild + "/bin/clang++ ")
        print_debug("Use compiler for selfbuild: " + selfbuild_compiler + "\n", from_validation, alloy_build)


    # configure and build for regular build or second phase of selfbuild
    if selfbuild is SelfbuildType.SINGLE or selfbuild is SelfbuildType.SELF or selfbuild is SelfbuildType.SELF_PHASE2:
        os.makedirs(LLVM_BUILD)
        os.makedirs(LLVM_BIN)
        os.chdir(LLVM_BUILD)
        build_type = "Release" if debug == False else "Debug"
        if current_OS != "Windows":
            try_do_LLVM("configure " + build_type + " version",
                    "cmake -G " + "\"" + generator + "\"" + " -DCMAKE_EXPORT_COMPILE_COMMANDS=ON" +
                    selfbuild_compiler +
                    "  -DCMAKE_INSTALL_PREFIX=" + llvm_home + "/" + LLVM_BIN +
                    "  -DCMAKE_BUILD_TYPE=" + build_type +
                    llvm_enable_projects +
                    get_llvm_disable_assertions_switch(llvm_disable_assertions) +
                    "  -DLLVM_INSTALL_UTILS=ON" +
                    (("  -DGCC_INSTALL_PREFIX=" + gcc_toolchain_path) if gcc_toolchain_path != "" else "") +
                    (("  -DCMAKE_C_COMPILER=" + gcc_toolchain_path+"/bin/gcc") if gcc_toolchain_path != "" and selfbuild_compiler == "" else "") +
                    (("  -DCMAKE_CXX_COMPILER=" + gcc_toolchain_path+"/bin/g++") if gcc_toolchain_path != "" and selfbuild_compiler == "" else "") +
                    (("  -DDEFAULT_SYSROOT=" + mac_system_root) if mac_system_root != "" else "") +
                    osx_deployment +
                    osx_universal +
                    targets_and_common_options +
                    " ../" + cmakelists_path,
                    from_validation, verbose)
        else:
            try_do_LLVM("configure " + build_type + " version",
                    'cmake -Thost=x64 -G ' + '\"' + generator + '\"' + ' -DCMAKE_INSTALL_PREFIX="..\\'+ LLVM_BIN + '" ' +
                    '  -DCMAKE_BUILD_TYPE=' + build_type +
                    llvm_enable_projects +
                    get_llvm_disable_assertions_switch(llvm_disable_assertions) +
                    '  -DLLVM_INSTALL_UTILS=ON' +
                    targets_and_common_options +
                    '  -DLLVM_LIT_TOOLS_DIR="C:\\gnuwin32\\bin" ..\\' + cmakelists_path,
                    from_validation, verbose)

        # building llvm
        if current_OS != "Windows":
            try_do_LLVM("build LLVM", make, from_validation, verbose)
            try_do_LLVM("install LLVM", "make install", from_validation, verbose)
        else:
            try_do_LLVM("build LLVM and then install LLVM", "msbuild INSTALL.vcxproj /V:m /p:Platform=x64 /p:Configuration=" + build_type + " /t:rebuild", from_validation, verbose)
        os.chdir(current_path)


def unsupported_llvm_targets(LLVM_VERSION):
    prohibited_list = {"6.0":["avx512skx-x8", "avx512skx-x4", "avx512skx-x64", "avx512skx-x32"],
                       "7.0":["avx512skx-x8", "avx512skx-x4", "avx512skx-x64", "avx512skx-x32"],
                       "8.0":["avx512skx-x64", "avx512skx-x32"],
                       "9.0":["avx512skx-x64", "avx512skx-x32"]
                       }
    if LLVM_VERSION in prohibited_list:
        return prohibited_list[LLVM_VERSION]
    return []


# Split targets into categories: native, sde.
# native - native targets run natively on current hardware.
# sde - native target, which need to be emulated on current hardware.
def check_targets():
    from os.path import join

    result = []
    result_sde = []

    cmd_conf = "cmake . -B check_isa_build -DISPC_INCLUDE_UTILS_ONLY=ON"
    cmd_build = "cmake --build check_isa_build --target check_isa --config Release"
    check_isa = "check_isa"
    if current_OS == "Windows":
        check_isa = join("Release", "check_isa.exe")
    check_isa = join("check_isa_build", "bin", check_isa)

    try_do_LLVM("build_check_isa configure", cmd_conf, True, True)
    try_do_LLVM("build_check_isa build", cmd_build, True, True)

    # Dictionary mapping hardware architecture to its targets.
    # The value in the dictionary is:
    # [
    #   list of targets corresponding to this architecture,
    #   list of other architecture executable on this hardware,
    #   flag for sde to emulate this platform,
    #   flag is this is supported on current platform
    # ]
    # Note: we have to put AVX and AVX1.1 both to the list of natively supported targets in target_dict,
    # otherwise it results in bizarre situation when on, e.g., AVX2 we run AVX1 targets under SDE.
    target_dict = OrderedDict([
      ("SSE2",       [["sse2-i32x4",  "sse2-i32x8"],
                     ["SSE2"], "-p4", False]),
      ("SSE4.1",     [["sse4.1-i32x4",  "sse4.1-i32x8",   "sse4.1-i16x8", "sse4.1-i8x16"],
                     ["SSE2", "SSE4.1"], "-pnr", False]),
      ("SSE4.2",     [["sse4.2-i32x4",  "sse4.2-i32x8",   "sse4.2-i16x8", "sse4.2-i8x16", "sse4-i32x4",  "sse4-i32x8",   "sse4-i16x8", "sse4-i8x16"],
                     ["SSE2", "SSE4.1", "SSE4.2"], "-nhm", False]),
      ("AVX",        [["avx1-i32x4",  "avx1-i32x8",  "avx1-i32x16",  "avx1-i64x4"],
                     ["SSE2", "SSE4.1", "SSE4.2", "AVX"], "-snb", False]),
      ("AVX1.1",     [["avx1-i32x4",  "avx1-i32x8",  "avx1-i32x16",  "avx1-i64x4"],
                     ["SSE2", "SSE4.1", "SSE4.2", "AVX"], "-snb", False]),
      ("AVX2",       [["avx2-i32x4", "avx2-i32x8",  "avx2-i32x16",  "avx2-i64x4", "avx2-i8x32", "avx2-i16x16"],
                     ["SSE2", "SSE4.1", "SSE4.2", "AVX", "AVX1.1", "AVX2"], "-hsw", False]),
      ("AVX2VNNI",   [["avx2vnni-i32x4", "avx2vnni-i32x8",  "avx2vnni-i32x16"],
                     ["SSE2", "SSE4.1", "SSE4.2", "AVX", "AVX1.1", "AVX2", "AVX2VNNI"], "-adl", False]),
      ("KNL",        [["avx512knl-x16"],
                     ["SSE2", "SSE4.1", "SSE4.2", "AVX", "AVX1.1", "AVX2", "AVX2VNNI", "KNL"], "-knl", False]),
      ("SKX",        [["avx512skx-x16", "avx512skx-x8", "avx512skx-x4", "avx512skx-x64", "avx512skx-x32"],
                     ["SSE2", "SSE4.1", "SSE4.2", "AVX", "AVX1.1", "AVX2", "AVX2VNNI", "SKX"], "-skx", False]),
      ("ICL",        [["avx512icl-x16", "avx512icl-x8", "avx512icl-x4", "avx512icl-x64", "avx512icl-x32"],
                     ["SSE2", "SSE4.1", "SSE4.2", "AVX", "AVX1.1", "AVX2", "AVX2VNNI", "SKX", "ICL"], "-icl", False]),
      ("SPR",        [["avx512spr-x16", "avx512spr-x8", "avx512spr-x4", "avx512spr-x64", "avx512spr-x32"],
                     ["SSE2", "SSE4.1", "SSE4.2", "AVX", "AVX1.1", "AVX2", "AVX2VNNI", "SKX", "ICL", "SPR"], "-spr", False])
    ])

    hw_arch = take_lines(check_isa, "first").split()[1]

    if not (hw_arch in target_dict):
        alloy_error("Architecture " + hw_arch + " was not recognized", 1)

    # Mark all compatible architecutres in the dictionary.
    # Note: we have to put AVX and AVX1.1 both to the list of natively supported targets target_dict,
    # otherwise it results in bizarre situation when on, e.g., AVX2 we run AVX1 targets under SDE.
    for compatible_arch in target_dict[hw_arch][1]:
        target_dict[compatible_arch][3] = True

    # Now initialize result and result_sde.
    for key in target_dict:
        item = target_dict[key]
        targets = item[0]
        if item[3]:
            # Supported natively
            for t in targets:
                # AVX1.1 and AVX aliased each other so avoid adding twice same arch.
                if t not in result:
                    result.append(t)
        else:
            # Supported through SDE
            for target in targets:
                # AVX1.1 and AVX aliased each other so avoid adding twice same arch.
                if [item[2], target] not in result_sde:
                    result_sde.append([item[2], target])

    # now check what targets we have with the help of SDE
    sde_exists = get_sde()
    if sde_exists == "":
        alloy_error("you haven't got sde neither in SDE_HOME nor in your PATH.\n" +
            "To test all platforms please set SDE_HOME to path containing SDE.\n" +
            "Please refer to http://www.intel.com/software/sde for SDE download information.", 2)

    return [result, result_sde]

def build_ispc(version_LLVM, make):
    current_path = os.getcwd()
    ispc_home = os.environ["ISPC_HOME"]
    os.chdir(ispc_home)

    make_ispc = "make " + options.ispc_build_compiler + " -j" + options.speed
    ISPC_BUILD="build-" + version_LLVM
    ISPC_BIN="bin-" + version_LLVM
    if not os.path.exists(ISPC_BUILD):
        os.makedirs(ISPC_BUILD)
    if not os.path.exists(ISPC_BUILD):
        os.makedirs(ISPC_BIN)
    os.chdir(ISPC_BUILD)

    if current_OS != "Windows":
        p_temp = os.getenv("PATH")
        os.environ["PATH"] = os.environ["LLVM_HOME"] + "/bin-" + version_LLVM + "/bin:" + os.environ["PATH"]

        folder = os.environ["LLVM_HOME"]  + os.sep + "llvm-"
        if options.folder == "":
            folder += version_LLVM
        if options.debug == True:
            folder +=  "dbg"

        try_do_LLVM("configure ispc build", 'cmake -DCMAKE_INSTALL_PREFIX="..\\'+ ISPC_BIN + '" ' +
                    '  -DCMAKE_BUILD_TYPE=Release' +
                        ispc_home, True)
        try_do_LLVM("build ISPC with LLVM version " + version_LLVM, make_ispc, True)
        try_do_LLVM("install ISPC", "make install", True)
        copyfile(os.path.join(ispc_home, ISPC_BIN, "bin", "ispc"), os.path.join(ispc_home, + "ispc"))
        os.environ["PATH"] = p_temp
    else:
        try_do_LLVM("configure ispc build", 'cmake -Thost=x64 -G ' + '\"' + generator + '\"' + ' -DCMAKE_INSTALL_PREFIX="..\\'+ ISPC_BIN + '" ' +
                    '  -DCMAKE_BUILD_TYPE=Release ' +
                        ispc_home, True)
        try_do_LLVM("clean ISPC for building", "msbuild ispc.vcxproj /t:clean", True)
        try_do_LLVM("build ISPC with LLVM version " + version_LLVM, "msbuild ispc.vcxproj /V:m /p:Platform=x64 /p:Configuration=Release /t:rebuild", True)
        try_do_LLVM("install ISPC", "msbuild INSTALL.vcxproj /p:Platform=x64 /p:Configuration=Release", True)
        copyfile(os.path.join(ispc_home, ISPC_BIN, "bin", "ispc.exe"), os.path.join(ispc_home, + "ispc.exe"))

    os.chdir(current_path)

def execute_stability(stability, R, print_version):
    global return_status
    try:
        stability1 = copy.deepcopy(stability)

        b_temp = run_tests.run_tests(stability1, [], print_version)
        temp = b_temp[0]
        time = b_temp[1]
        for j in range(0,4):
            R[j][0] = R[j][0] + temp[j] # new_runfails, new_compfails, new_passes_runfails, new_passes_compfails
            for i in range(0,len(temp[j])):
                R[j][1].append(temp[4])
        number_of_fails = temp[5]
        number_of_new_fails = len(temp[0]) + len(temp[1])
        number_of_passes = len(temp[2]) + len(temp[3])
        if number_of_fails == 0:
            str_fails = ". No fails"
        else:
            str_fails = ". Fails: " + str(number_of_fails)
        if number_of_new_fails == 0:
            str_new_fails = ", No new fails"
        else:
            str_new_fails = ", New fails: " + str(number_of_new_fails)
        if number_of_passes == 0:
            str_new_passes = "."
        else:
            str_new_passes = ", " + str(number_of_passes) + " new passes."
        if stability.time:
            str_time = " " + time + "\n"
        else:
            str_time = "\n"
        print_debug(temp[4][1:-3] + stability1.ispc_flags + str_fails + str_new_fails + str_new_passes + str_time, False, stability_log)
    except Exception as e:
        print_debug("Exception: " + str(e), False, stability_log)
        exc_type, exc_value, exc_traceback = sys.exc_info()
        traceback.print_tb(exc_traceback, file=sys.stderr)
        print_debug("ERROR: Exception in execute_stability: %s\n" % (sys.exc_info()[1]), False, stability_log)
        return_status = 1


'''
R       = [[new_runfails,        [new_line, new_line...]],
           [new_compfails,       [new_line, new_line...]],
           [new_passes_runfails, [new_line, new_line...]],
           [new_passes_runfails, [new_line, new_line...]]]
'''
def output_test_results(R):
    ttt = ["NEW RUNFAILS: ", "NEW COMPFAILS: ", "NEW PASSES RUNFAILS: ", "NEW PASSES COMPFAILS: "]
    for j in range(0, 4):
        if len(R[j][0]) == 0:
            print_debug("NO " + ttt[j][:-2] + "\n", False, stability_log)
        else:
            print_debug(ttt[j] + str(len(R[j][0])) + "\n", False, stability_log)
            to_print = {}
            for (fail_name, opt_str) in zip(R[j][0], R[j][1]):
                if fail_name not in to_print:
                    to_print[fail_name] = []
                to_print[fail_name].append(opt_str)

            # sort
            for key in to_print.keys():
                to_print[key] = sorted(to_print[key])

            # print out
            for fail_name in sorted(to_print.keys()):
                print_debug("\t" + fail_name + "\n", True, stability_log)
                for opt_str in to_print[fail_name]:
                    print_debug("\t\t\t" + opt_str, True, stability_log)

def concatenate_test_results(R1, R2):
    R = [[[],[]],[[],[]],[[],[]],[[],[]]]
    for j in range(0, 4):
        R[j][0] = R1[j][0] + R2[j][0]
        R[j][1] = R1[j][1] + R2[j][1]
    return R

def validation_run(only, only_targets, reference_branch, number, update, speed_number, make, perf_llvm, time):
    os.chdir(os.environ["ISPC_HOME"])
    if current_OS != "Windows":
        os.environ["PATH"] = os.environ["ISPC_HOME"] + ":" + os.environ["PATH"]
    print_debug("Command: " + ' '.join(sys.argv) + "\n", False, "")
    print_debug("Folder: " + os.environ["ISPC_HOME"] + "\n", False, "")
    date = datetime.datetime.now()
    print_debug("Date: " + date.strftime('%H:%M %d/%m/%Y') + "\n", False, "")
    newest_LLVM="13.0"
# *** *** ***
# Stability validation run
# *** *** ***
    if ((("stability" in only) == True) or ("performance" in only) == False):
        print_debug("\n\nStability validation run\n\n", False, "")
        stability = common.EmptyClass()
# stability constant options
        stability.save_bin = False
        stability.random = False
        stability.ispc_flags = options.ispc_flags
        stability.compiler_exe = options.compiler_exe
        stability.num_jobs = speed_number
        stability.verbose = False
        stability.time = time
        # 1200 is more than default value in run_tests.py (600).
        # There's a single test, which requires longer time on AVX2 capable server (Github Action):
        # tests/idiv.ispc running for avx512-i8x64 for x86 under SDE.
        # For any other tests it should be more than enough.
        stability.test_time = 1200
        stability.csv = ""
        stability.non_interactive = True
        stability.update = update
        stability.include_file = None
        stability.silent = True
        stability.in_file = "." + os.sep + f_date + os.sep + "run_tests_log.log"
        stability.verify = False
        stability.fail_db = "tests/fail_db.txt"
        stability.device = None
        stability.ispc_output = None
        stability.debug_check = False
# stability varying options
        stability.target = ""
        stability.arch = ""
        stability.opt = ""
        stability.wrapexe = ""
# prepare parameters of run
        [targets_t, sde_targets_t] = check_targets()
        rebuild = True
        opts = []
        archs = []
        LLVM = []
        targets = []
        sde_targets = []
        dbg_begin = 0
        dbg_total = 1

# parsing option only, update parameters of run
        if "-O2" in only:
            opts.append("O2")
        if "-O1" in only:
            opts.append("O1")
        if "-O0" in only:
            opts.append("O0")
        if "debug" in only:
            if not ("nodebug" in only):
                dbg_begin = 1
            dbg_total = 2
        if "x86" in only and not ("x86-64" in only):
            archs.append("x86")
        if "x86-64" in only:
            archs.append("x86-64")
        if "native" in only:
            sde_targets_t = []
        for i in ["6.0", "7.0", "8.0", "9.0", "10.0", "11.0", "12.0", "13.0", "14.0", "15.0", "16.0", "17.0", "18.1", "19.1", "trunk"]:
            if i in only:
                LLVM.append(i)
        if "current" in only:
            LLVM = [" "]
            rebuild = False
        else:
            common.check_tools(1)

        if only_targets != "":
            only_targets += " "
            only_targets_t = only_targets.split(" ")

            for i in only_targets_t:
                if i == "":
                    continue
                err = True
                for j in range(0,len(targets_t)):
                    if i in targets_t[j]:
                        targets.append(targets_t[j])
                        err = False
                for j in range(0,len(sde_targets_t)):
                    if i in sde_targets_t[j][1]:
                        sde_targets.append(sde_targets_t[j])
                        err = False
                if err == True:
                    alloy_error("You haven't sde for target " + i, 1)
        else:
            targets = targets_t
            sde_targets = sde_targets_t

        if "build" in only:
            targets = []
            sde_targets = []
            only = only + " stability "
# finish parameters of run, prepare LLVM
        if len(opts) == 0:
            opts = ["O2"]
        if len(archs) == 0:
            archs = ["x86", "x86-64"]
        if len(LLVM) == 0:
            LLVM = [newest_LLVM, "trunk"]
        need_LLVM = check_LLVM(LLVM)
        for i in range(0,len(need_LLVM)):
            build_LLVM(need_LLVM[i], "", "", "", False, False, False, True, False, make, options.gcc_toolchain_path, False, True, options.macos_version_min, options.macos_universal_bin)
# begin validation run for stabitily
        common.remove_if_exists(stability.in_file)
        R = [[[],[]],[[],[]],[[],[]],[[],[]]]
        print_debug("\n" + common.get_host_name() + "\n", False, stability_log)
        print_debug("\n_________________________STABILITY REPORT_________________________\n", False, stability_log)
        ispc_flags_tmp = stability.ispc_flags
        for i in range(0,len(LLVM)):
            R_tmp = [[[],[]],[[],[]],[[],[]],[[],[]]]
            print_version = 2
            if rebuild:
                build_ispc(LLVM[i], make)
            for j in range(0,len(targets)):
                stability.target = targets[j]
                # the target might be not supported by the chosen llvm version
                if (stability.target in unsupported_llvm_targets(LLVM[i])):
                    print_debug("Warning: target " + stability.target + " is not supported in LLVM " + LLVM[i] + "\n", False, stability_log)
                    continue

                # now set archs for targets
                arch = archs
                for i1 in range(0,len(arch)):
                    for i2 in range(0,len(opts)):
                        for i3 in range(dbg_begin,dbg_total):
                            stability.arch = arch[i1]
                            stability.opt = opts[i2]
                            stability.ispc_flags = ispc_flags_tmp
                            if (i3 != 0):
                                stability.ispc_flags += " -g"
                            execute_stability(stability, R_tmp, print_version)
                            print_version = 0
            for j in range(0,len(sde_targets)):
                stability.target = sde_targets[j][1]
                # the target might be not supported by the chosen llvm version
                if (stability.target in unsupported_llvm_targets(LLVM[i])):
                    print_debug("Warning: target " + stability.target + " is not supported in LLVM " + LLVM[i] + "\n", False, stability_log)
                    continue

                stability.wrapexe = get_sde() + " " + sde_targets[j][0] + " -- "
                arch = archs
                for i1 in range(0,len(arch)):
                    for i2 in range(0,len(opts)):
                        for i3 in range(dbg_begin,dbg_total):
                            stability.arch = arch[i1]
                            stability.opt = opts[i2]
                            stability.ispc_flags = ispc_flags_tmp
                            if (i3 != 0):
                                stability.ispc_flags += " -g"
                            execute_stability(stability, R_tmp, print_version)
                            print_version = 0
            # Output testing results separate for each tested LLVM version
            R = concatenate_test_results(R, R_tmp)
            output_test_results(R_tmp)
            print_debug("\n", False, stability_log)

        print_debug("\n----------------------------------------\nTOTAL:\n", False, stability_log)
        output_test_results(R)
        print_debug("__________________Watch stability.log for details_________________\n", False, stability_log)

# *** *** ***
# Performance validation run
# *** *** ***
    if ((("performance" in only) == True) or ("stability" in only) == False):
        print_debug("\n\nPerformance validation run\n\n", False, "")
        common.check_tools(1)
        performance = common.EmptyClass()
# performance constant options
        performance.number = number
        performance.config = "." + os.sep + "perf.ini"
        performance.path = "." + os.sep
        performance.silent = True
        performance.output = ""
        performance.compiler = ""
        performance.ref = "ispc_ref"
        if current_OS == "Windows":
            performance.ref = "ispc_ref.exe"
        performance.perf_target = ""
        performance.in_file = "." + os.sep + f_date + os.sep + "performance.log"
# prepare newest LLVM
        need_LLVM = check_LLVM([newest_LLVM])
        if len(need_LLVM) != 0:
            build_LLVM(need_LLVM[0], "", "", "", False, False, False, True, False, make, options.gcc_toolchain_path, True, False, options.macos_version_min, options.macos_universal_bin)
        if perf_llvm == False:
            # prepare reference point. build both test and reference compilers
            try_do_LLVM("apply git", "git branch", True)
            temp4 = take_lines("git branch", "all")
            for line in temp4:
                if "*" in line:
                    current_branch = line[2:-1]
            stashing = True
            sys.stdout.write("Please, don't interrupt script here! You can have not sync git status after interruption!\n")
            if "No local changes" in take_lines("git stash", "first"):
                stashing = False
            #try_do_LLVM("stash current branch ", "git stash", True)
            try_do_LLVM("checkout reference branch " + reference_branch, "git checkout " + reference_branch, True)
            sys.stdout.write(".\n")
            build_ispc(newest_LLVM, make)
            sys.stdout.write(".\n")
            if current_OS != "Windows":
                os.rename("ispc", "ispc_ref")
            else:
                common.remove_if_exists("ispc_ref.exe")
                os.rename("ispc.exe", "ispc_ref.exe")
            try_do_LLVM("checkout test branch " + current_branch, "git checkout " + current_branch, True)
            if stashing:
                try_do_LLVM("return current branch", "git stash pop", True)
            sys.stdout.write("You can interrupt script now.\n")
            build_ispc(newest_LLVM, make)
        else:
            # build compiler with two different LLVM versions
            if len(check_LLVM([reference_branch])) != 0:
                alloy_error("you haven't got llvm called " + reference_branch, 1)
            build_ispc(newest_LLVM, make)
            os.rename("ispc", "ispc_ref")
            build_ispc(reference_branch, make)
        # begin validation run for performance. output is inserted into perf()
        perf.perf(performance, [])
    # dumping gathered info to the file
    common.ex_state.dump(alloy_folder + "test_table.dump", common.ex_state.tt)


def Main():
    global current_OS
    global current_OS_version
    global return_status
    current_OS_version = platform.release()
    if (platform.system() == 'Windows' or 'CYGWIN_NT' in platform.system()) == True:
        current_OS = "Windows"
    else:
        if (platform.system() == 'Darwin'):
            current_OS = "MacOS"
        else:
            current_OS = "Linux"
    if (options.build_llvm == False and options.validation_run == False):
        parser.print_help()
        exit(1)

    # set appropriate makefile target
    # gcc and g++ options are equal and added for ease of use
    if options.ispc_build_compiler != "clang" and \
       options.ispc_build_compiler != "gcc":
        alloy_error("unknow option for --ispc-build-compiler: " + options.ispc_build_compiler, 1)
        parser.print_help()
        exit(1)

    # check and normalize selfbuild switches
    selfbuild = SelfbuildType.SINGLE
    if (options.selfbuild and (options.selfbuild_phase1 or options.selfbuild_phase2)) or (options.selfbuild_phase1 and options.selfbuild_phase2):
        alloy_error("Only one of --selfbuild* switches can be used at the same time", 1)
    if options.selfbuild:
        selfbuild = SelfbuildType.SELF
    if options.selfbuild_phase1:
        selfbuild = SelfbuildType.SELF_PHASE1
    if options.selfbuild_phase2:
        selfbuild = SelfbuildType.SELF_PHASE2

    setting_paths(options.llvm_home, options.ispc_home, options.sde_home)
    if os.environ.get("LLVM_HOME") == None:
        alloy_error("you have no LLVM_HOME", 1)
    if os.environ.get("ISPC_HOME") == None:
        alloy_error("you have no ISPC_HOME", 1)
    if options.only != "":
        test_only_r = " 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.1 19.1 trunk current build stability performance x86 x86-64 x86_64 -O0 -O1 -O2 native debug nodebug "
        test_only = options.only.split(" ")
        for iterator in test_only:
            if not (" " + iterator + " " in test_only_r):
                alloy_error("unknown option for only: " + iterator, 1)
    if current_OS == "Windows" and selfbuild is not SelfbuildType.SINGLE:
        alloy_error("Selfbuild is not supported on Windows", 1)
    global f_date
    f_date = "logs"
    common.remove_if_exists(f_date)
    os.makedirs(f_date)
    global alloy_folder
    alloy_folder = os.getcwd() + os.sep + f_date + os.sep
    global alloy_build
    alloy_build = alloy_folder + "alloy_build.log"
    global stability_log
    stability_log = alloy_folder + "stability.log"
    current_path = os.getcwd()
    make = "make -j" + options.speed
    if os.environ["ISPC_HOME"] != os.getcwd():
        alloy_error("your ISPC_HOME and your current path are different! (" + os.environ["ISPC_HOME"] + " is not equal to " + os.getcwd() +
        ")\n", 2)
    if options.perf_llvm == True:
        if options.branch == "main":
            options.branch = "trunk"
    global generator
    if options.generator:
        generator = options.generator
    else:
        if current_OS == "Windows":
            generator = "Visual Studio 17 2022"
        else:
            generator = "Unix Makefiles"
    try:
        start_time = time.time()
        if options.build_llvm:
            build_LLVM(options.version, options.folder,
                    options.debug, selfbuild, options.extra, options.openmp, False, options.force, make, options.gcc_toolchain_path, options.llvm_disable_assertions, options.verbose, options.macos_version_min, options.macos_universal_bin)
        if options.validation_run:
            validation_run(options.only, options.only_targets, options.branch,
                    options.number_for_performance, options.update, int(options.speed),
                    make, options.perf_llvm, options.time)
        elapsed_time = time.time() - start_time
        if options.time:
            print_debug("Elapsed time: " + time.strftime('%Hh%Mm%Ssec.', time.gmtime(elapsed_time)) + "\n", False, "")
    except Exception as e:
        print_debug("Exception: " + str(e) + "\n", False, stability_log)
        return_status = 1

    # Finish execution: time reporting and copy log
    try:
        os.chdir(current_path)
        date_name = "alloy_results_" + datetime.datetime.now().strftime('%Y_%m_%d_%H_%M_%S')
        if os.path.exists(date_name):
            alloy_error("It's forbidden to run alloy two times in a second, logs are in ./logs", 1)
        os.rename(f_date, date_name)
        print_debug("Logs are in " + date_name + "\n", False, "")
    except Exception as e:
        # Do not return non-zero exit code here, as it's not a critical error and testing might be considered successful.
        print_debug("Exception: " + str(e), False, stability_log)

    if current_OS == "Windows":
        # Windows hangs from time to time on exit, so returning without cleanup.
        sys.stdout.flush()
        os._exit(return_status)
    exit(return_status)

###Main###
from optparse import OptionParser
from optparse import OptionGroup
import sys
import os
import errno
import operator
import time
import glob
import platform
import smtplib
import datetime
import copy
import multiprocessing
# Subprocess is intentionally used with shell=True, it's required for cross platform support.
# The command called from subprocess is constructed inside the script and
# it's quoted appropriately to avoid shell injection vulnerabilities
# so it's safe to ignore Bandit warning.
import subprocess #nosec
import re
from shutil import copyfile
# our drivers
import run_tests
import perf
import common
take_lines = common.take_lines
print_debug = common.print_debug
make_sure_dir_exists = common.make_sure_dir_exists
return_status = 0
if __name__ == '__main__':
    # parsing options
    class MyParser(OptionParser):
        def format_epilog(self, formatter):
            return self.epilog
    examples =  ("Examples:\n" +
    "Download and build LLVM trunk\n\talloy.py -b\n" +
    "Download and build LLVM 13.0. Rewrite LLVM folders\n\talloy.py -b --version=13.0 --force\n" +
    "Validation run with LLVM trunk; x86, x86-64; -O2;\nall supported targets; performance\n\talloy.py -r\n" +
    "Validation run with all avx targets and sse4-i8x16 without performance\n\talloy.py -r --only=stability --only-targets='avx sse4-i8x16'\n" +
    "Validation run with avx2-i32x8, all sse4 and sse2 targets\nand all targets with i32x16\n\talloy.py -r --only-targets='avx2-i32x8 sse4 i32x16 sse2'\n" +
    "Stability validation run with LLVM 7.0, 8.0; -O0; x86,\nupdate fail_db.txt with passes and fails\n\talloy.py -r --only='7.0 -O0 stability 8.0 x86' --update-errors=FP\n" +
    "Try to build compiler with all LLVM\n\talloy.py -r --only=build\n" +
    "Performance validation run with 10 runs of each test and comparing to branch 'old'\n\talloy.py -r --only=performance --compare-with=old --number=10\n" +
    "Validation run. Update fail_db.txt with new fails\n\talloy.py -r --update-errors=F\n" +
    "Test KNL target (requires sde)\n\talloy.py -r --only='stability' --only-targets='avx512knl-x16'\n")

    num_threads="%s" % multiprocessing.cpu_count()
    parser = MyParser(usage="Usage: alloy.py -r/-b [options]", epilog=examples)
    parser.add_option('-b', '--build-llvm', dest='build_llvm',
        help='ask to build LLVM', default=False, action="store_true")
    parser.add_option('-r', '--run', dest='validation_run',
        help='ask for validation run', default=False, action="store_true")
    parser.add_option('-j', dest='speed',
        help='set -j for make', default=num_threads)
    parser.add_option('--ispc-build-compiler', dest='ispc_build_compiler',
        help='set compiler to build ispc binary (clang/gcc)', default="clang")
    # options for activity "build LLVM"
    llvm_group = OptionGroup(parser, "Options for building LLVM",
                    "These options must be used with -b option.")
    llvm_group.add_option('--version', dest='version',
        help='version of llvm to build: 6.0-19.1 trunk. Default: trunk', default="trunk")
    llvm_group.add_option('--full-checkout', dest='full_checkout', action='store_true', default=False,
        help=('Disable a shallow clone and checkout a whole LLVM repository.\n'
              'By default it clones LLVM with --depth=1 to save space and time'))
    llvm_group.add_option('--with-gcc-toolchain', dest='gcc_toolchain_path',
         help='GCC install dir to use when building clang. It is important to set when ' +
         'you have alternative gcc installation. Note that otherwise gcc from standard ' +
         'location will be used, not from your PATH', default="")
    llvm_group.add_option('--debug', dest='debug',
        help='debug build of LLVM', default=False, action="store_true")
    llvm_group.add_option('--folder', dest='folder',
        help='folder to build LLVM in', default="")
    llvm_group.add_option('--selfbuild', dest='selfbuild',
        help='make selfbuild of LLVM and clang', default=False, action="store_true")
    llvm_group.add_option('--selfbuild-phase1', dest='selfbuild_phase1',
        help='make selfbuild of LLVM and clang, first phase only', default=False, action="store_true")
    llvm_group.add_option('--selfbuild-phase2', dest='selfbuild_phase2',
        help='make selfbuild of LLVM and clang, second phase only', default=False, action="store_true")
    llvm_group.add_option('--llvm-disable-assertions', dest='llvm_disable_assertions',
        help='build LLVM with assertions disabled', default=False, action="store_true")
    llvm_group.add_option('--macos-version-min', dest='macos_version_min',
        help='Minimal macOS version to target with this LLVM build (ignored on other OSes)', default="10.12" if platform.machine() == 'x86_64' else "11.0")
    llvm_group.add_option('--macos-universal-binary', dest='macos_universal_bin',
        help='Build Universal Binaries (x86_64+arm64) on macOS', default=False, action='store_true')
    llvm_group.add_option('--force', dest='force',
        help='rebuild LLVM', default=False, action='store_true')
    llvm_group.add_option('--extra', dest='extra',
        help='load extra clang tools', default=False, action='store_true')
    llvm_group.add_option('--openmp', dest='openmp',
        help='build OpenMP as part of LLVM', default=False, action='store_true')
    llvm_group.add_option('--verbose', dest='verbose',
        help='verbose output during the build', default=False, action='store_true')
    parser.add_option_group(llvm_group)
    # options for activity "validation run"
    run_group = OptionGroup(parser, "Options for validation run",
                    "These options must be used with -r option.")
    run_group.add_option('--compare-with', dest='branch',
        help='set performance reference point. Default: main', default="main")
    run_group.add_option('--compiler', dest='compiler_exe',
        help='C/C++ compiler binary to use to run tests.', default=None)
    run_group.add_option('--ispc-flags', dest='ispc_flags',
        help='extra ispc flags.', default="")
    run_group.add_option('--number', dest='number_for_performance',
        help='number of performance runs for each test. Default: 5', default=5)
    run_group.add_option('--update-errors', dest='update',
        help='rewrite fail_db.txt file according to received results (F or FP)', default="")
    run_group.add_option('--only-targets', dest='only_targets',
        help='set list of targets to test. Possible values - all subnames of targets', default="")
    run_group.add_option('--time', dest='time',
        help='display time of testing', default=False, action='store_true')
    run_group.add_option('--only', dest='only',
        help='set types of tests. Possible values:\n' +
            '-O0, -O1, -O2, x86, x86-64, stability (test only stability), performance (test only performance),\n' +
            'build (only build with different LLVM), 6.0-19.1, trunk, native (do not use SDE),\n' +
            'current (do not rebuild ISPC), debug (only with debug info), nodebug (only without debug info, default).',
            default="")
    run_group.add_option('--perf_LLVM', dest='perf_llvm',
        help='compare LLVM 8.0 with "--compare-with", default trunk', default=False, action='store_true')
    run_group.add_option('--generator', dest='generator',
        help='specify cmake generator', default="")
    parser.add_option_group(run_group)
    # options for activity "setup PATHS"
    setup_group = OptionGroup(parser, "Options for setup",
                    "These options must be use with -r or -b to setup environment variables")
    setup_group.add_option('--llvm_home', dest='llvm_home',help='path to LLVM',default="")
    setup_group.add_option('--ispc_home', dest='ispc_home',help='path to ISPC',default="")
    setup_group.add_option('--sde_home', dest='sde_home',help='path to SDE',default="")
    parser.add_option_group(setup_group)
    (options, args) = parser.parse_args()
    Main()
