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1 # -*- Python -*-
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2
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3 # Configuration file for the 'lit' test runner.
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4
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5 import os
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6 import sys
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7 import re
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8 import platform
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9 import subprocess
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10
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11 import lit.util
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12 import lit.formats
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13 from lit.llvm import llvm_config
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14 from lit.llvm.subst import FindTool
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15 from lit.llvm.subst import ToolSubst
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16
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17 # name: The name of this test suite.
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18 config.name = 'LLVM'
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19
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20 # testFormat: The test format to use to interpret tests.
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21 config.test_format = lit.formats.ShTest(not llvm_config.use_lit_shell)
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22
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23 # suffixes: A list of file extensions to treat as test files. This is overriden
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24 # by individual lit.local.cfg files in the test subdirectories.
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25 config.suffixes = ['.ll', '.c', '.cxx', '.test', '.txt', '.s', '.mir']
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26
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27 # excludes: A list of directories to exclude from the testsuite. The 'Inputs'
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28 # subdirectories contain auxiliary inputs for various tests in their parent
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29 # directories.
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30 config.excludes = ['Inputs', 'CMakeLists.txt', 'README.txt', 'LICENSE.txt']
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31
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32 # test_source_root: The root path where tests are located.
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33 config.test_source_root = os.path.dirname(__file__)
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34
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35 # test_exec_root: The root path where tests should be run.
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36 config.test_exec_root = os.path.join(config.llvm_obj_root, 'test')
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37
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38 # Tweak the PATH to include the tools dir.
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39 llvm_config.with_environment('PATH', config.llvm_tools_dir, append_path=True)
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40
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41 # Propagate some variables from the host environment.
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42 llvm_config.with_system_environment(
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43 ['HOME', 'INCLUDE', 'LIB', 'TMP', 'TEMP', 'ASAN_SYMBOLIZER_PATH', 'MSAN_SYMBOLIZER_PATH'])
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44
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45
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46 # Set up OCAMLPATH to include newly built OCaml libraries.
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47 top_ocaml_lib = os.path.join(config.llvm_lib_dir, 'ocaml')
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48 llvm_ocaml_lib = os.path.join(top_ocaml_lib, 'llvm')
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49
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50 llvm_config.with_system_environment('OCAMLPATH')
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51 llvm_config.with_environment('OCAMLPATH', top_ocaml_lib, append_path=True)
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52 llvm_config.with_environment('OCAMLPATH', llvm_ocaml_lib, append_path=True)
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53
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54 llvm_config.with_system_environment('CAML_LD_LIBRARY_PATH')
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55 llvm_config.with_environment(
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56 'CAML_LD_LIBRARY_PATH', llvm_ocaml_lib, append_path=True)
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57
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58 # Set up OCAMLRUNPARAM to enable backtraces in OCaml tests.
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59 llvm_config.with_environment('OCAMLRUNPARAM', 'b')
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60
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61 # Provide the path to asan runtime lib 'libclang_rt.asan_osx_dynamic.dylib' if
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62 # available. This is darwin specific since it's currently only needed on darwin.
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63
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64
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65 def get_asan_rtlib():
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66 if not 'Address' in config.llvm_use_sanitizer or \
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67 not 'Darwin' in config.host_os or \
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68 not 'x86' in config.host_triple:
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69 return ''
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70 try:
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71 import glob
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72 except:
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73 print('glob module not found, skipping get_asan_rtlib() lookup')
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74 return ''
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75 # The libclang_rt.asan_osx_dynamic.dylib path is obtained using the relative
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76 # path from the host cc.
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77 host_lib_dir = os.path.join(os.path.dirname(config.host_cc), '../lib')
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78 asan_dylib_dir_pattern = host_lib_dir + \
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79 '/clang/*/lib/darwin/libclang_rt.asan_osx_dynamic.dylib'
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80 found_dylibs = glob.glob(asan_dylib_dir_pattern)
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81 if len(found_dylibs) != 1:
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82 return ''
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83 return found_dylibs[0]
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84
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85
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86 llvm_config.use_default_substitutions()
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87
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88 # Add site-specific substitutions.
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89 config.substitutions.append(('%llvmshlibdir', config.llvm_shlib_dir))
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90 config.substitutions.append(('%shlibext', config.llvm_shlib_ext))
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91 config.substitutions.append(('%exeext', config.llvm_exe_ext))
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92 config.substitutions.append(('%host_cc', config.host_cc))
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93
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94
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95 lli_args = []
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96 # The target triple used by default by lli is the process target triple (some
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97 # triple appropriate for generating code for the current process) but because
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98 # we don't support COFF in MCJIT well enough for the tests, force ELF format on
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99 # Windows. FIXME: the process target triple should be used here, but this is
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100 # difficult to obtain on Windows.
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101 if re.search(r'cygwin|mingw32|windows-gnu|windows-msvc|win32', config.host_triple):
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102 lli_args = ['-mtriple=' + config.host_triple + '-elf']
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103
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104 llc_args = []
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105
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106 # Similarly, have a macro to use llc with DWARF even when the host is win32.
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107 if re.search(r'win32', config.target_triple):
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108 llc_args = [' -mtriple=' +
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109 config.target_triple.replace('-win32', '-mingw32')]
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110
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111 # Provide the path to asan runtime lib if available. On darwin, this lib needs
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112 # to be loaded via DYLD_INSERT_LIBRARIES before libLTO.dylib in case the files
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113 # to be linked contain instrumented sanitizer code.
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114 ld64_cmd = config.ld64_executable
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115 asan_rtlib = get_asan_rtlib()
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116 if asan_rtlib:
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117 ld64_cmd = 'DYLD_INSERT_LIBRARIES={} {}'.format(asan_rtlib, ld64_cmd)
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118
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119 ocamlc_command = '%s ocamlc -cclib -L%s %s' % (
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120 config.ocamlfind_executable, config.llvm_lib_dir, config.ocaml_flags)
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121 ocamlopt_command = 'true'
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122 if config.have_ocamlopt:
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123 ocamlopt_command = '%s ocamlopt -cclib -L%s -cclib -Wl,-rpath,%s %s' % (
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124 config.ocamlfind_executable, config.llvm_lib_dir, config.llvm_lib_dir, config.ocaml_flags)
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125
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126
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127 tools = [
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128 ToolSubst('%lli', FindTool('lli'), post='.', extra_args=lli_args),
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129 ToolSubst('%llc_dwarf', FindTool('llc'), extra_args=llc_args),
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130 ToolSubst('%go', config.go_executable, unresolved='ignore'),
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131 ToolSubst('%gold', config.gold_executable, unresolved='ignore'),
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132 ToolSubst('%ld64', ld64_cmd, unresolved='ignore'),
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133 ToolSubst('%ocamlc', ocamlc_command, unresolved='ignore'),
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134 ToolSubst('%ocamlopt', ocamlopt_command, unresolved='ignore'),
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135 ]
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136
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137 # FIXME: Why do we have both `lli` and `%lli` that do slightly different things?
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138 tools.extend([
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139 'lli', 'lli-child-target', 'llvm-ar', 'llvm-as', 'llvm-bcanalyzer', 'llvm-config', 'llvm-cov',
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140 'llvm-cxxdump', 'llvm-cvtres', 'llvm-diff', 'llvm-dis', 'llvm-dsymutil',
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141 'llvm-dwarfdump', 'llvm-extract', 'llvm-isel-fuzzer', 'llvm-lib',
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142 'llvm-link', 'llvm-lto', 'llvm-lto2', 'llvm-mc', 'llvm-mcmarkup',
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143 'llvm-modextract', 'llvm-nm', 'llvm-objcopy', 'llvm-objdump',
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144 'llvm-pdbutil', 'llvm-profdata', 'llvm-ranlib', 'llvm-readobj',
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145 'llvm-rtdyld', 'llvm-size', 'llvm-split', 'llvm-strings', 'llvm-tblgen',
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146 'llvm-c-test', 'llvm-cxxfilt', 'llvm-xray', 'yaml2obj', 'obj2yaml',
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147 'yaml-bench', 'verify-uselistorder',
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148 'bugpoint', 'llc', 'llvm-symbolizer', 'opt', 'sancov', 'sanstats'])
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149
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150 # The following tools are optional
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151 tools.extend([
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152 ToolSubst('llvm-go', unresolved='ignore'),
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153 ToolSubst('llvm-mt', unresolved='ignore'),
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154 ToolSubst('Kaleidoscope-Ch3', unresolved='ignore'),
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155 ToolSubst('Kaleidoscope-Ch4', unresolved='ignore'),
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156 ToolSubst('Kaleidoscope-Ch5', unresolved='ignore'),
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157 ToolSubst('Kaleidoscope-Ch6', unresolved='ignore'),
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158 ToolSubst('Kaleidoscope-Ch7', unresolved='ignore'),
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159 ToolSubst('Kaleidoscope-Ch8', unresolved='ignore')])
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160
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161 llvm_config.add_tool_substitutions(tools, config.llvm_tools_dir)
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162
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163 # Targets
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164
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165 config.targets = frozenset(config.targets_to_build.split())
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166
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167 for arch in config.targets_to_build.split():
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168 config.available_features.add(arch.lower() + '-registered-target')
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169
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170 # Features
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171
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172 # Others/can-execute.txt
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173 if sys.platform not in ['win32']:
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174 config.available_features.add('can-execute')
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175 config.available_features.add('not_COFF')
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176
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177 # Loadable module
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178 # FIXME: This should be supplied by Makefile or autoconf.
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179 if sys.platform in ['win32', 'cygwin']:
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180 loadable_module = (config.enable_shared == 1)
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181 else:
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182 loadable_module = True
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183
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184 if loadable_module:
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185 config.available_features.add('loadable_module')
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186
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187 # Static libraries are not built if BUILD_SHARED_LIBS is ON.
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188 if not config.build_shared_libs and not config.link_llvm_dylib:
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189 config.available_features.add('static-libs')
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190
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191 # Direct object generation
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192 if not 'hexagon' in config.target_triple:
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193 config.available_features.add('object-emission')
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194
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195 # LLVM can be configured with an empty default triple
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196 # Some tests are "generic" and require a valid default triple
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197 if config.target_triple:
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198 config.available_features.add('default_triple')
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199
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200 import subprocess
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201
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202
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203 def have_ld_plugin_support():
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204 if not os.path.exists(os.path.join(config.llvm_shlib_dir, 'LLVMgold.so')):
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205 return False
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206
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207 ld_cmd = subprocess.Popen(
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208 [config.gold_executable, '--help'], stdout=subprocess.PIPE, env={'LANG': 'C'})
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209 ld_out = ld_cmd.stdout.read().decode()
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210 ld_cmd.wait()
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211
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212 if not '-plugin' in ld_out:
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213 return False
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214
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215 # check that the used emulations are supported.
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216 emu_line = [l for l in ld_out.split('\n') if 'supported emulations' in l]
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217 if len(emu_line) != 1:
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218 return False
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219 emu_line = emu_line[0]
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220 fields = emu_line.split(':')
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221 if len(fields) != 3:
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222 return False
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223 emulations = fields[2].split()
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224 if 'elf_x86_64' not in emulations:
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225 return False
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226 if 'elf32ppc' in emulations:
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227 config.available_features.add('ld_emu_elf32ppc')
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228
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229 ld_version = subprocess.Popen(
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230 [config.gold_executable, '--version'], stdout=subprocess.PIPE, env={'LANG': 'C'})
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231 if not 'GNU gold' in ld_version.stdout.read().decode():
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232 return False
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233 ld_version.wait()
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234
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235 return True
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236
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237
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238 if have_ld_plugin_support():
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239 config.available_features.add('ld_plugin')
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240
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241
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242 def have_ld64_plugin_support():
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243 if not config.llvm_tool_lto_build or config.ld64_executable == '':
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244 return False
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245
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246 ld_cmd = subprocess.Popen(
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247 [config.ld64_executable, '-v'], stderr=subprocess.PIPE)
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248 ld_out = ld_cmd.stderr.read().decode()
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249 ld_cmd.wait()
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250
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251 if 'ld64' not in ld_out or 'LTO' not in ld_out:
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252 return False
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253
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254 return True
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255
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256
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257 if have_ld64_plugin_support():
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258 config.available_features.add('ld64_plugin')
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259
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260 # Ask llvm-config about asserts and global-isel.
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261 llvm_config.feature_config(
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262 [('--assertion-mode', {'ON': 'asserts'}),
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263 ('--has-global-isel', {'ON': 'global-isel'})])
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264
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265 if 'darwin' == sys.platform:
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266 try:
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267 sysctl_cmd = subprocess.Popen(['sysctl', 'hw.optional.fma'],
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268 stdout=subprocess.PIPE)
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269 except OSError:
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270 print('Could not exec sysctl')
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271 result = sysctl_cmd.stdout.read().decode('ascii')
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272 if -1 != result.find('hw.optional.fma: 1'):
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273 config.available_features.add('fma3')
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274 sysctl_cmd.wait()
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275
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276 # .debug_frame is not emitted for targeting Windows x64.
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277 if not re.match(r'^x86_64.*-(mingw32|windows-gnu|win32)', config.target_triple):
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278 config.available_features.add('debug_frame')
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279
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280 if config.have_libxar:
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281 config.available_features.add('xar')
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282
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283 if config.llvm_libxml2_enabled == '1':
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284 config.available_features.add('libxml2')
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