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llvm-project/clang/utils/perf-training/lit.cfg

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[CMake] Add support for generating profdata for clang from training files Summary: This patch adds support for using LIT to drive generating PGO profile data for clang. This first pass implementation should work on Linux and Unix based platforms. If you build clang using CMake with LLVM_BUILD_INSTRUMENTED=On the CMake build generates a generate-profdata target that will use the just-built clang to build any test files (see hello_world.cpp as an example). Each test compile will generate profraw files for each clang process. After all tests have run CMake will merge the profraw files using llvm-profdata. Future opportunities for extension: * Support for Build->Profile->Build bootstrapping * Support for linker order file generation using a similar mechanism and the same training data * Support for Windows Reviewers: dexonsmith, friss, bogner, cmatthews, vsk, silvas Subscribers: cfe-commits Differential Revision: http://reviews.llvm.org/D15462 llvm-svn: 255740
2015-12-16 09:02:44 +08:00
# -*- Python -*-
from lit import Test
import lit.formats
import lit.util
def getSysrootFlagsOnDarwin(config, lit_config):
# On Darwin, support relocatable SDKs by providing Clang with a
# default system root path.
if 'darwin' in config.target_triple:
try:
out = lit.util.capture(['xcrun', '--show-sdk-path']).strip()
res = 0
except OSError:
res = -1
if res == 0 and out:
sdk_path = out
lit_config.note('using SDKROOT: %r' % sdk_path)
return '-isysroot %s' % sdk_path
return ''
sysroot_flags = getSysrootFlagsOnDarwin(config, lit_config)
config.clang = lit.util.which('clang', config.clang_tools_dir).replace('\\', '/')
config.name = 'Clang Perf Training'
config.suffixes = ['.c', '.cpp', '.m', '.mm', '.cu', '.ll', '.cl', '.s', '.S', '.modulemap']
use_lit_shell = os.environ.get("LIT_USE_INTERNAL_SHELL")
config.test_format = lit.formats.ShTest(use_lit_shell == "0")
config.substitutions.append( ('%clang_cpp', ' %s --driver-mode=cpp %s ' % (config.clang, sysroot_flags)))
[CMake] Fixing a typo in a flag Turns out cc1's flag has 1 - not 2... llvm-svn: 256070
2015-12-19 08:56:12 +08:00
config.substitutions.append( ('%clang_cc1', ' %s -cc1 %s ' % (config.clang, sysroot_flags)))
[CMake] Add support for generating profdata for clang from training files Summary: This patch adds support for using LIT to drive generating PGO profile data for clang. This first pass implementation should work on Linux and Unix based platforms. If you build clang using CMake with LLVM_BUILD_INSTRUMENTED=On the CMake build generates a generate-profdata target that will use the just-built clang to build any test files (see hello_world.cpp as an example). Each test compile will generate profraw files for each clang process. After all tests have run CMake will merge the profraw files using llvm-profdata. Future opportunities for extension: * Support for Build->Profile->Build bootstrapping * Support for linker order file generation using a similar mechanism and the same training data * Support for Windows Reviewers: dexonsmith, friss, bogner, cmatthews, vsk, silvas Subscribers: cfe-commits Differential Revision: http://reviews.llvm.org/D15462 llvm-svn: 255740
2015-12-16 09:02:44 +08:00
config.substitutions.append( ('%clang', ' %s %s ' % (config.clang, sysroot_flags) ) )
[CMake] PGO training data Adding in a few more lit substitutions for cc1 and the test exec path. llvm-svn: 256057
2015-12-19 07:00:57 +08:00
config.substitutions.append( ('%test_root', config.test_exec_root ) )
[CMake] Add support for generating profdata for clang from training files Summary: This patch adds support for using LIT to drive generating PGO profile data for clang. This first pass implementation should work on Linux and Unix based platforms. If you build clang using CMake with LLVM_BUILD_INSTRUMENTED=On the CMake build generates a generate-profdata target that will use the just-built clang to build any test files (see hello_world.cpp as an example). Each test compile will generate profraw files for each clang process. After all tests have run CMake will merge the profraw files using llvm-profdata. Future opportunities for extension: * Support for Build->Profile->Build bootstrapping * Support for linker order file generation using a similar mechanism and the same training data * Support for Windows Reviewers: dexonsmith, friss, bogner, cmatthews, vsk, silvas Subscribers: cfe-commits Differential Revision: http://reviews.llvm.org/D15462 llvm-svn: 255740
2015-12-16 09:02:44 +08:00
config.environment['LLVM_PROFILE_FILE'] = 'perf-training-%p.profraw'