Slim down the LLVM builds (#281)

* Slim down the LLVM builds

Disable lots of tools and features that we don't need for Halide buildbots. On my Mac, this drops the install dir from ~6GB to ~2GB, and the compressed size from ~1.5GB to ~0.5GB.

* Update master.cfg

* Update master.cfg

* Update master.cfg

Author: steven-johnson

master/master.cfg

@@ -722,31 +722,173 @@ def get_cmake_build_command(builder_type, build_dir, targets=None):
     return cmd
 
 
+# options in LLVM that we always want OFF because they aren't needed
+# for Halide buildbot usage.
+_LLVM_OFF_OPTS = [
+    "CLANG_ENABLE_ARCMT"
+    "CLANG_ENABLE_CLANGD"
+    "CLANG_ENABLE_STATIC_ANALYZER"
+    "CLANG_INCLUDE_DOCS"
+    "CLANG_INSTALL_SCANBUILD"
+    "CLANG_INSTALL_SCANVIEW"
+    "CLANG_PLUGIN_SUPPORT"
+    "CLANG_TIDY_ENABLE_STATIC_ANALYZER"
+    "CLANG_TOOL_APINOTES_TEST_BUILD"
+    "CLANG_TOOL_ARCMT_TEST_BUILD"
+    "CLANG_TOOL_C_ARCMT_TEST_BUILD"
+    "CLANG_TOOL_C_INDEX_TEST_BUILD"
+    "CLANG_TOOL_CLANG_CHECK_BUILD"
+    "CLANG_TOOL_CLANG_DIFF_BUILD"
+    "CLANG_TOOL_CLANG_EXTDEF_MAPPING_BUILD"
+    "CLANG_TOOL_CLANG_FORMAT_BUILD"
+    "CLANG_TOOL_CLANG_FORMAT_VS_BUILD"
+    "CLANG_TOOL_CLANG_FUZZER_BUILD"
+    "CLANG_TOOL_CLANG_IMPORT_TEST_BUILD"
+    "CLANG_TOOL_CLANG_LINKER_WRAPPER_BUILD"
+    "CLANG_TOOL_CLANG_OFFLOAD_BUNDLER_BUILD"
+    "CLANG_TOOL_CLANG_OFFLOAD_PACKAGER_BUILD"
+    "CLANG_TOOL_CLANG_REFACTOR_BUILD"
+    "CLANG_TOOL_CLANG_RENAME_BUILD"
+    "CLANG_TOOL_CLANG_REPL_BUILD"
+    "CLANG_TOOL_CLANG_SCAN_DEPS_BUILD"
+    "CLANG_TOOL_CLANG_SHLIB_BUILD"
+    "CLANG_TOOL_DIAGTOOL_BUILD"
+    "CLANG_TOOL_DICTIONARY_BUILD"
+    "CLANG_TOOL_LIBCLANG_BUILD"
+    "CLANG_TOOL_NVPTX_ARCH_BUILD"
+    "CLANG_TOOL_SCAN_BUILD_BUILD"
+    "CLANG_TOOL_SCAN_BUILD_PY_BUILD"
+    "CLANG_TOOL_SCAN_VIEW_BUILD"
+    "CLANG_TOOLS_EXTRA_INCLUDE_DOCS"
+    "LLVM_BUILD_UTILS"
+    "LLVM_ENABLE_BINDINGS"
+    "LLVM_ENABLE_CURL"
+    "LLVM_ENABLE_DIA_SDK"
+    "LLVM_ENABLE_HTTPLIB"
+    "LLVM_ENABLE_IDE"
+    "LLVM_ENABLE_LIBXML2"
+    "LLVM_ENABLE_OCAMLDOC"
+    "LLVM_ENABLE_PLUGINS"
+    "LLVM_ENABLE_TERMINFO"
+    "LLVM_ENABLE_WARNINGS"
+    "LLVM_ENABLE_ZSTD",
+    "LLVM_INCLUDE_BENCHMARKS"
+    "LLVM_INCLUDE_DOCS"
+    "LLVM_INCLUDE_EXAMPLES"
+    "LLVM_INCLUDE_TESTS"
+    "LLVM_INCLUDE_UTILS"
+    "LLVM_TOOL_BUGPOINT_BUILD"
+    "LLVM_TOOL_BUGPOINT_PASSES_BUILD"
+    "LLVM_TOOL_DSYMUTIL_BUILD"
+    "LLVM_TOOL_DXIL_DIS_BUILD"
+    "LLVM_TOOL_GOLD_BUILD"
+    "LLVM_TOOL_LLC_BUILD"
+    "LLVM_TOOL_LLI_BUILD"
+    "LLVM_TOOL_LLVM_AR_BUILD"
+    # "LLVM_TOOL_LLVM_AS_BUILD"  -- no: ClangConfig.cmake needs this
+    # "LLVM_TOOL_LLVM_AS_FUZZER_BUILD"  -- no: ClangConfig.cmake needs this
+    "LLVM_TOOL_LLVM_BCANALYZER_BUILD"
+    "LLVM_TOOL_LLVM_C_TEST_BUILD"
+    "LLVM_TOOL_LLVM_CAT_BUILD"
+    "LLVM_TOOL_LLVM_CFI_VERIFY_BUILD"
+    "LLVM_TOOL_LLVM_COV_BUILD"
+    "LLVM_TOOL_LLVM_CVTRES_BUILD"
+    "LLVM_TOOL_LLVM_CXXDUMP_BUILD"
+    "LLVM_TOOL_LLVM_CXXFILT_BUILD"
+    "LLVM_TOOL_LLVM_CXXMAP_BUILD"
+    "LLVM_TOOL_LLVM_DEBUGINFO_ANALYZER_BUILD"
+    "LLVM_TOOL_LLVM_DEBUGINFOD_BUILD"
+    "LLVM_TOOL_LLVM_DEBUGINFOD_FIND_BUILD"
+    "LLVM_TOOL_LLVM_DIFF_BUILD"
+    "LLVM_TOOL_LLVM_DIS_BUILD"
+    "LLVM_TOOL_LLVM_DIS_FUZZER_BUILD"
+    "LLVM_TOOL_LLVM_DLANG_DEMANGLE_FUZZER_BUILD"
+    "LLVM_TOOL_LLVM_DWARFDUMP_BUILD"
+    "LLVM_TOOL_LLVM_DWARFUTIL_BUILD"
+    "LLVM_TOOL_LLVM_DWP_BUILD"
+    "LLVM_TOOL_LLVM_EXEGESIS_BUILD"
+    "LLVM_TOOL_LLVM_EXTRACT_BUILD"
+    "LLVM_TOOL_LLVM_GSYMUTIL_BUILD"
+    "LLVM_TOOL_LLVM_IFS_BUILD"
+    "LLVM_TOOL_LLVM_ISEL_FUZZER_BUILD"
+    "LLVM_TOOL_LLVM_ITANIUM_DEMANGLE_FUZZER_BUILD"
+    "LLVM_TOOL_LLVM_JITLINK_BUILD"
+    "LLVM_TOOL_LLVM_JITLISTENER_BUILD"
+    "LLVM_TOOL_LLVM_LIBTOOL_DARWIN_BUILD"
+    "LLVM_TOOL_LLVM_LINK_BUILD"
+    "LLVM_TOOL_LLVM_LIPO_BUILD"
+    "LLVM_TOOL_LLVM_LTO2_BUILD"
+    "LLVM_TOOL_LLVM_LTO_BUILD"
+    "LLVM_TOOL_LLVM_MC_ASSEMBLE_FUZZER_BUILD"
+    "LLVM_TOOL_LLVM_MC_BUILD"
+    "LLVM_TOOL_LLVM_MC_DISASSEMBLE_FUZZER_BUILD"
+    "LLVM_TOOL_LLVM_MCA_BUILD"
+    "LLVM_TOOL_LLVM_MICROSOFT_DEMANGLE_FUZZER_BUILD"
+    "LLVM_TOOL_LLVM_ML_BUILD"
+    "LLVM_TOOL_LLVM_MODEXTRACT_BUILD"
+    "LLVM_TOOL_LLVM_MT_BUILD"
+    "LLVM_TOOL_LLVM_NM_BUILD"
+    "LLVM_TOOL_LLVM_OBJCOPY_BUILD"
+    "LLVM_TOOL_LLVM_OBJDUMP_BUILD"
+    "LLVM_TOOL_LLVM_OPT_FUZZER_BUILD"
+    "LLVM_TOOL_LLVM_OPT_REPORT_BUILD"
+    "LLVM_TOOL_LLVM_PDBUTIL_BUILD"
+    "LLVM_TOOL_LLVM_PROFDATA_BUILD"
+    "LLVM_TOOL_LLVM_PROFGEN_BUILD"
+    "LLVM_TOOL_LLVM_RC_BUILD"
+    "LLVM_TOOL_LLVM_READOBJ_BUILD"
+    "LLVM_TOOL_LLVM_READTAPI_BUILD"
+    "LLVM_TOOL_LLVM_REDUCE_BUILD"
+    "LLVM_TOOL_LLVM_REMARKUTIL_BUILD"
+    "LLVM_TOOL_LLVM_RTDYLD_BUILD"
+    "LLVM_TOOL_LLVM_RUST_DEMANGLE_FUZZER_BUILD"
+    "LLVM_TOOL_LLVM_SHLIB_BUILD"
+    "LLVM_TOOL_LLVM_SIM_BUILD"
+    "LLVM_TOOL_LLVM_SIZE_BUILD"
+    "LLVM_TOOL_LLVM_SPECIAL_CASE_LIST_FUZZER_BUILD"
+    "LLVM_TOOL_LLVM_SPLIT_BUILD"
+    "LLVM_TOOL_LLVM_STRESS_BUILD"
+    "LLVM_TOOL_LLVM_STRINGS_BUILD"
+    "LLVM_TOOL_LLVM_SYMBOLIZER_BUILD"
+    "LLVM_TOOL_LLVM_TLI_CHECKER_BUILD"
+    "LLVM_TOOL_LLVM_UNDNAME_BUILD"
+    "LLVM_TOOL_LLVM_XRAY_BUILD"
+    "LLVM_TOOL_LLVM_YAML_NUMERIC_PARSER_FUZZER_BUILD"
+    "LLVM_TOOL_LLVM_YAML_PARSER_FUZZER_BUILD"
+    "LLVM_TOOL_LTO_BUILD"
+    "LLVM_TOOL_MLIR_BUILD"
+    "LLVM_TOOL_OBJ2YAML_BUILD"
+    "LLVM_TOOL_OPENMP_BUILD"
+    "LLVM_TOOL_OPT_BUILD"
+    "LLVM_TOOL_OPT_VIEWER_BUILD"
+    "LLVM_TOOL_POLLY_BUILD"
+    "LLVM_TOOL_PSTL_BUILD"
+    "LLVM_TOOL_REMARKS_SHLIB_BUILD"
+    "LLVM_TOOL_SANCOV_BUILD"
+    "LLVM_TOOL_SANSTATS_BUILD"
+    "LLVM_TOOL_SPIRV_TOOLS_BUILD"
+    "LLVM_TOOL_VERIFY_USELISTORDER_BUILD"
+    "LLVM_TOOL_VFABI_DEMANGLE_FUZZER_BUILD"
+    "LLVM_TOOL_XCODE_TOOLCHAIN_BUILD"
+    "LLVM_TOOL_YAML2OBJ_BUILD"
+]
+
+
 def get_llvm_cmake_definitions(builder_type):
     # Keep sorted!
     definitions = {
         'CMAKE_BUILD_TYPE': 'Release',
         'CMAKE_INSTALL_PREFIX': get_llvm_install_path(builder_type),
         'LLVM_BUILD_32_BITS': ('ON' if builder_type.bits == 32 else 'OFF'),
         'LLVM_ENABLE_ASSERTIONS': 'ON',
-        'LLVM_ENABLE_BINDINGS': 'OFF',
-        'LLVM_ENABLE_CURL': 'OFF',
-        'LLVM_ENABLE_DIA_SDK': 'OFF',
-        'LLVM_ENABLE_HTTPLIB': 'OFF',
-        'LLVM_ENABLE_IDE': 'OFF',
-        'LLVM_ENABLE_LIBXML2': 'OFF',
-        'LLVM_ENABLE_OCAMLDOC': 'OFF',
         'LLVM_ENABLE_RTTI': 'ON',
-        'LLVM_ENABLE_TERMINFO': 'OFF',
-        'LLVM_ENABLE_WARNINGS': 'OFF',  # silence them, it's not like we're gonna fix them
         'LLVM_ENABLE_ZLIB': 'ON',
-        'LLVM_ENABLE_ZSTD': 'OFF',
-        'LLVM_INCLUDE_BENCHMARKS': 'OFF',
-        'LLVM_INCLUDE_EXAMPLES': 'OFF',
-        'LLVM_INCLUDE_TESTS': 'OFF',
         'LLVM_TARGETS_TO_BUILD': 'X86;ARM;NVPTX;AArch64;Hexagon;PowerPC;WebAssembly',
     }
 
+    for off in _LLVM_OFF_OPTS:
+        definitions[off] = 'OFF'
+
     if builder_type.bits == 32:
         definitions['CMAKE_FIND_ROOT_PATH_MODE_INCLUDE'] = "ONLY"
         definitions['CMAKE_FIND_ROOT_PATH_MODE_LIBRARY'] = "ONLY"