Stowage/cpython
2
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2026-04-05 03:21:05 +00:00
Code Issues Projects Releases Packages Wiki Activity

GH-115802: Optimize JIT stencils for size (GH-136393)

Browse source
This commit is contained in:
Brandt Bucher 2025-07-09 12:11:28 -07:00 • committed by GitHub
parent 798f791daf
commit c49dc3bd0f
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
1 changed files with 9 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

10
Tools/jit/_targets.py
View file

@ -137,7 +137,15 @@ async def _compile(
f"-I{CPYTHON / 'Include' / 'internal' / 'mimalloc'}",
f"-I{CPYTHON / 'Python'}",
f"-I{CPYTHON / 'Tools' / 'jit'}",
"-O3",
# -O2 and -O3 include some optimizations that make sense for
# standalone functions, but not for snippets of code that are going
# to be laid out end-to-end (like ours)... common examples include
# passes like tail-duplication, or aligning jump targets with nops.
# -Os is equivalent to -O2 with many of these problematic passes
# disabled. Based on manual review, for *our* purposes it usually
# generates better code than -O2 (and -O2 usually generates better
# code than -O3). As a nice benefit, it uses less memory too:
"-Os",
"-S",
# Shorten full absolute file paths in the generated code (like the
# __FILE__ macro and assert failure messages) for reproducibility: