8000 Quick test to see if removing the tier2 interpreter speeds up tier1 by gvanrossum · Pull Request #117908 · python/cpython · GitHub
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Quick test to see if removing the tier2 interpreter speeds up tier1 #117908

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Quick test to see if removing the tier2 interpreter speeds up tier1 #117908

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dba4b9b
Hard-code _Py_NOTIER2 **temporarily** until I figure out how to add a…
gvanrossum Apr 15, 2024
ada980b
Disallow JIT and NOTIER2 flags together
gvanrossum Apr 15, 2024
2794ead
If NOTIER2, don't ever call into it from bytecodes.c
gvanrossum Apr 15, 2024
aa47106
Remove tier2 interpreter if NOTIER2
gvanrossum Apr 15, 2024
2055e5f
Fix test_opt (expose _opcode.NOTIER2 and disable tests if set)
gvanrossum Apr 15, 2024
4d33fa2
Leave Windows compiler optimization on if _Py_NOTIER2 is defined
gvanrossum Apr 16, 2024
0c195cb
Fix the problem with CALL_STAT_INC (see issue)
gvanrossum Apr 16, 2024
e83be54
Support a proper ./configure option --disable-tier2
gvanrossum Apr 15, 2024
ced0ca9
Also disable updating the bitmask cache for PUP_JUMP_IF*
gvanrossum Apr 16, 2024
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Support a proper ./configure option --disable-tier2
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@gvanrossum
gvanrossum committed Apr 16, 2024
commit e83be549fc8e1e3fed6bf561386dc5694f8a09bf
30 changes: 30 additions & 0 deletions configure
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15 changes: 15 additions & 0 deletions configure.ac
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Expand Up @@ -1762,6 +1762,21 @@ else
AC_MSG_RESULT([no])
fi

# Check for --disable-tier2
# --disable-tier2
AC_MSG_CHECKING([for --disable-tier2])
AC_ARG_ENABLE([tier2],
[AS_HELP_STRING([--disable-tier2], [disable tier 2 interpreter support (default is no)])],
[AS_VAR_IF([enable_tier2], [yes], [disable_tier2=no], [disable_tier2=yes])], [disable_tier2=no]
)
AC_MSG_RESULT([$disable_tier2])

if test "$disable_tier2" = "yes"
then
AC_DEFINE([_Py_NOTIER2], [1],
[Define if you want to disable the tier 2 interpreter entirely])
fi

# Check for --enable-experimental-jit:
AC_MSG_CHECKING([for --enable-experimental-jit])
AC_ARG_ENABLE([experimental-jit],
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3 changes: 3 additions & 0 deletions pyconfig.h.in
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Expand Up @@ -1923,6 +1923,9 @@
/* framework name */
#undef _PYTHONFRAMEWORK

/* Define if you want to disable the tier 2 interpreter entirely */
#undef _Py_NOTIER2

/* Define to force use of thread-safe errno, h_errno, and other functions */
#undef _REENTRANT

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0