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| author |   Gregory P. Smith <greg@krypto.org> | 2022-02-02 20:02:59 -0800 |
|---|---|---|
| committer |   GitHub <noreply@github.com> | 2022-02-02 20:02:59 -0800 |
| commit | f5ebec4d3e1199ec38b88920cfde8e460e5120dd (patch) | |
| tree | 499948f4d385f17a2d5b7e186ef128b847fdb0bb /Tools | |
| parent | bpo-45975: Use walrus operator for some idlelib while loops (GH-31083) (diff) | |
| download | cpython-f5ebec4d3e1199ec38b88920cfde8e460e5120dd.tar.gz cpython-f5ebec4d3e1199ec38b88920cfde8e460e5120dd.tar.bz2 cpython-f5ebec4d3e1199ec38b88920cfde8e460e5120dd.zip | |
[3.10] bpo-46576: bpo-46524: Disable compiler optimization within test_peg_generator. (GH-31015) (GH-31089)
Disable compiler optimization within test_peg_generator.
This speed up test_peg_generator by always disabling compiler
optimizations by using -O0 or equivalent when the test is building its
own C extensions.
A build not using --with-pydebug in order to speed up test execution
winds up with this test taking a very long time as it would do
repeated compilation of parser C code using the same optimization
flags as CPython was built with.
This speeds the test up 6-8x on gps-raspbian.
Also incorporate's GH-31017's win32 conditional and flags.
Co-authored-by: Kumar Aditya kumaraditya303.
(cherry picked from commit 164a017e13ee96bd1ea1ae79f5ac9e25fe83994e)
Co-authored-by: Gregory P. Smith <greg@krypto.org>
Diffstat (limited to 'Tools')
| -rw-r--r-- | Tools/peg_generator/pegen/build.py | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Tools/peg_generator/pegen/build.py b/Tools/peg_generator/pegen/build.py index b80fc854239..61a48d57145 100644 --- a/Tools/peg_generator/pegen/build.py +++ b/Tools/peg_generator/pegen/build.py @@ -1,6 +1,7 @@ import pathlib import shutil import tokenize +import sys import sysconfig import tempfile import itertools @@ -33,6 +34,7 @@ def compile_c_extension( build_dir: Optional[str] = None, verbose: bool = False, keep_asserts: bool = True, + disable_optimization: bool = True, # Significant test_peg_generator speedup. ) -> str: """Compile the generated source for a parser generator into an extension module. @@ -62,6 +64,14 @@ def compile_c_extension( extra_link_args = get_extra_flags("LDFLAGS", "PY_LDFLAGS_NODIST") if keep_asserts: extra_compile_args.append("-UNDEBUG") + if disable_optimization: + if sys.platform == 'win32': + extra_compile_args.append("/Od") + extra_link_args.append("/LTCG:OFF") + else: + extra_compile_args.append("-O0") + if sysconfig.get_config_var("GNULD") == "yes": + extra_link_args.append("-fno-lto") extension = [ Extension( extension_name, |