Adds test.support.PGO and skips tests that are not useful for PGO.

Lib/test/libregrtest/main.py

@@ -473,6 +473,8 @@ def _main(self, tests, kwargs):
         if self.ns.wait:
             input("Press any key to continue...")
 
+        support.PGO = self.ns.pgo
+
         setup_tests(self.ns)
 
         self.find_tests(tests)

Lib/test/support/__init__.py

@@ -105,7 +105,7 @@
     "check_warnings", "check_no_resource_warning", "EnvironmentVarGuard",
     "run_with_locale", "swap_item",
     "swap_attr", "Matcher", "set_memlimit", "SuppressCrashReport", "sortdict",
-    "run_with_tz",
+    "run_with_tz", "PGO",
     ]
 
 class Error(Exception):
@@ -878,6 +878,10 @@ def dec(*args, **kwargs):
 # Save the initial cwd
 SAVEDCWD = os.getcwd()
 
+# Set by libregrtest/main.py so we can skip tests that are not
+# useful for PGO
+PGO = False
+
 @contextlib.contextmanager
 def temp_dir(path=None, quiet=False):
     """Return a context manager that creates a temporary directory.

Lib/test/test_asyncore.py

@@ -11,6 +11,9 @@
 from test import support
 from io import BytesIO
 
+if support.PGO:
+    raise unittest.SkipTest("test is not helpful for PGO")
+
 try:
     import threading
 except ImportError:

Lib/test/test_gdb.py

@@ -110,6 +110,7 @@ def gdb_has_frame_select():
 
 BREAKPOINT_FN='builtin_id'
 
+@support.skipIf(support.PGO, "not useful for PGO")
 class DebuggerTests(unittest.TestCase):
 
     """Test that the debugger can debug Python."""

Lib/test/test_multiprocessing_fork.py

@@ -1,6 +1,12 @@
 import unittest
 import test._test_multiprocessing
 
+from test import support
+
+if support.PGO:
+    raise unittest.SkipTest("test is not helpful for PGO")
+
+
 test._test_multiprocessing.install_tests_in_module_dict(globals(), 'fork')
 
 if __name__ == '__main__':

Lib/test/test_multiprocessing_forkserver.py

@@ -1,6 +1,11 @@
 import unittest
 import test._test_multiprocessing
 
+from test import support
+
+if support.PGO:
+    raise unittest.SkipTest("test is not helpful for PGO")
+
 test._test_multiprocessing.install_tests_in_module_dict(globals(), 'forkserver')
 
 if __name__ == '__main__':

Lib/test/test_multiprocessing_main_handling.py

@@ -16,6 +16,9 @@
     make_pkg, make_script, make_zip_pkg, make_zip_script,
     assert_python_ok)
 
+if support.PGO:
+    raise unittest.SkipTest("test is not helpful for PGO")
+
 # Look up which start methods are available to test
 import multiprocessing
 AVAILABLE_START_METHODS = set(multiprocessing.get_all_start_methods())

Lib/test/test_multiprocessing_spawn.py

@@ -1,6 +1,11 @@
 import unittest
 import test._test_multiprocessing
 
+from test import support
+
+if support.PGO:
+    raise unittest.SkipTest("test is not helpful for PGO")
+
 test._test_multiprocessing.install_tests_in_module_dict(globals(), 'spawn')
 
 if __name__ == '__main__':

Lib/test/test_subprocess.py

@@ -21,6 +21,9 @@
 except ImportError:
     threading = None
 
+if support.PGO:
+    raise unittest.SkipTest("test is not helpful for PGO")
+
 mswindows = (sys.platform == "win32")
 
 #

Makefile.pre.in

@@ -235,7 +235,7 @@ TCLTK_LIBS=	@TCLTK_LIBS@
 # The task to run while instrumented when building the profile-opt target.
 # We exclude unittests with -x that take a rediculious amount of time to
 # run in the instrumented training build or do not provide much value.
-PROFILE_TASK=-m test.regrtest --pgo -x test_asyncore test_gdb test_multiprocessing_fork test_multiprocessing_forkserver test_multiprocessing_main_handling test_multiprocessing_spawn test_subprocess
+PROFILE_TASK=-m test.regrtest --pgo
 
 # report files for gcov / lcov coverage report
 COVERAGE_INFO=	$(abs_builddir)/coverage.info

Tools/msi/buildrelease.bat

@@ -35,7 +35,7 @@ set BUILDX86=
 set BUILDX64=
 set TARGET=Rebuild
 set TESTTARGETDIR=
-set PGO=
+set PGO=default
 
 
 :CheckOpts
@@ -55,6 +55,7 @@ if "%1" EQU "--build" (set TARGET=Build) && shift && goto CheckOpts
 if "%1" EQU "-x86" (set BUILDX86=1) && shift && goto CheckOpts
 if "%1" EQU "-x64" (set BUILDX64=1) && shift && goto CheckOpts
 if "%1" EQU "--pgo" (set PGO=%~2) && shift && shift && goto CheckOpts
+if "%1" EQU "--skip-pgo" (set PGO=) && shift && goto CheckOpts
 
 if "%1" NEQ "" echo Invalid option: "%1" && exit /B 1
 
@@ -195,7 +196,7 @@ exit /B 0
 
 :Help
 echo buildrelease.bat [--out DIR] [-x86] [-x64] [--certificate CERTNAME] [--build] [--skip-build]
-echo                  [--pgo COMMAND] [--skip-doc] [--download DOWNLOAD URL] [--test TARGETDIR]
+echo                  [--pgo COMMAND] [--skip-pgo] [--skip-doc] [--download DOWNLOAD URL] [--test TARGETDIR]
 echo                  [-h]
 echo.
 echo    --out (-o)          Specify an additional output directory for installers
@@ -204,7 +205,8 @@ echo    -x64                Build x64 installers
 echo    --build (-b)        Incrementally build Python rather than rebuilding
 echo    --skip-build (-B)   Do not build Python (just do the installers)
 echo    --skip-doc (-D)     Do not build documentation
-echo    --pgo               Build x64 installers using PGO
+echo    --pgo               Specify PGO command for x64 installers
+echo    --skip-pgo          Build x64 installers using PGO
 echo    --download          Specify the full download URL for MSIs
 echo    --test              Specify the test directory to run the installer tests
 echo    -h                  Display this help information