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Guido van Rossum bcce5e2718
gh-109039: Branch prediction for Tier 2 interpreter (#109038) 
This adds a 16-bit inline cache entry to the conditional branch instructions POP_JUMP_IF_{FALSE,TRUE,NONE,NOT_NONE} and their instrumented variants, which is used to keep track of the branch direction.

Each time we encounter these instructions we shift the cache entry left by one and set the bottom bit to whether we jumped.

Then when it's time to translate such a branch to Tier 2 uops, we use the bit count from the cache entry to decided whether to continue translating the "didn't jump" branch or the "jumped" branch.

The counter is initialized to a pattern of alternating ones and zeros to avoid bias.

The .pyc file magic number is updated. There's a new test, some fixes for existing tests, and a few miscellaneous cleanups.
 		2023-09-11 18:20:24 +00:00
..
clinic gh-108753: Enhance pystats (#108754) 2023-09-06 15:54:59 +00:00
deepfreeze gh-97669: Create Tools/build/ directory (#97963) 2022-10-17 12:01:00 +02:00
frozen_modules gh-97669: Create Tools/build/ directory (#97963) 2022-10-17 12:01:00 +02:00
Python-ast.c GH-91079: Rename C_RECURSION_LIMIT to Py_C_RECURSION_LIMIT (#108507) 2023-09-08 09:48:28 +00:00
Python-tokenize.c gh-107015: Remove async_hacks from the tokenizer (#107018) 2023-07-26 16:34:15 +01:00
README
…
_warnings.c gh-106320: Remove private _PyTraceback functions (#108453) 2023-08-24 23:35:47 +00:00
abstract_interp_cases.c.h gh-109118: Fix runtime crash when NameError happens in PEP 695 function (#109123) 2023-09-09 02:49:20 +00:00
adaptive.md GH-98686: Get rid of "adaptive" and "quick" instructions (GH-99182) 2022-11-09 10:50:09 -08:00
asdl.c bpo-43244: Remove ast.h, asdl.h, Python-ast.h headers (GH-24933) 2021-03-23 20:47:40 +01:00
asm_trampoline.S gh-96143: Move the perf trampoline files to the Python directory (#98675) 2022-10-25 23:34:22 +01:00
assemble.c gh-108444: Replace _PyLong_AsInt() with PyLong_AsInt() (#108459) 2023-08-25 01:01:30 +02:00
ast.c GH-91079: Rename C_RECURSION_LIMIT to Py_C_RECURSION_LIMIT (#108507) 2023-09-08 09:48:28 +00:00
ast_opt.c GH-91079: Rename C_RECURSION_LIMIT to Py_C_RECURSION_LIMIT (#108507) 2023-09-08 09:48:28 +00:00
ast_unparse.c gh-100227: Move _str_replace_inf to PyInterpreterState (gh-102333) 2023-02-28 14:16:39 -07:00
bltinmodule.c gh-108765: Python.h no longer includes <ctype.h> (#108831) 2023-09-03 18:54:27 +02:00
bootstrap_hash.c gh-106320: Remove private pylifecycle.h functions (#106400) 2023-07-04 09:41:43 +00:00
bytecodes.c gh-109039: Branch prediction for Tier 2 interpreter (#109038) 2023-09-11 18:20:24 +00:00
ceval.c GH-108390: Prevent non-local events being set with `sys.monitoring.set_local_events()` (GH-108420) 2023-09-05 08:03:53 +01:00
ceval_gil.c gh-108987: Fix _thread.start_new_thread() race condition (#109135) 2023-09-11 17:27:03 +02:00
ceval_macros.h GH-108614: Add `RESUME_CHECK` instruction (GH-108630) 2023-09-07 14:39:03 +01:00
codecs.c gh-108765: Python.h no longer includes <ctype.h> (#108831) 2023-09-03 18:54:27 +02:00
compile.c gh-106320: Remove private _PyErr_WriteUnraisableMsg() (#108863) 2023-09-05 01:54:55 +02:00
condvar.h gh-74953: _PyThread_cond_after() uses _PyTime_t (#94056) 2022-06-21 15:45:49 +02:00
context.c GH-84436: Skip refcounting for known immortals (GH-107605) 2023-08-04 16:24:50 -07:00
dtoa.c gh-104263: Rely on Py_NAN and introduce Py_INFINITY (GH-104202) 2023-05-10 17:44:52 +01:00
dup2.c gh-108765: Python.h no longer includes <unistd.h> (#108783) 2023-09-02 16:50:18 +02:00
dynamic_annotations.c bpo-32241: Add the const qualifire to declarations of umodifiable strings. (#4748) 2017-12-12 13:55:04 +02:00
dynload_hpux.c bpo-44959: Add fallback to extension modules with '.sl' suffix on HP-UX (GH-27857) 2021-09-08 14:43:00 +02:00
dynload_shlib.c gh-101758: Clean Up Uses of Import State (gh-101919) 2023-02-15 15:32:31 -07:00
dynload_stub.c
…
dynload_win.c gh-108765: Python.h no longer includes <ctype.h> (#108831) 2023-09-03 18:54:27 +02:00
emscripten_signal.c GH-108614: Unbreak emscripten build (GH-109132) 2023-09-08 17:54:45 +01:00
errors.c gh-108765: Python.h no longer includes <ctype.h> (#108831) 2023-09-03 18:54:27 +02:00
executor.c GH-108614: Remove `TIER_ONE` and `TIER_TWO` from `_PUSH_FRAME` (GH-108725) 2023-09-04 11:36:57 +01:00
executor_cases.c.h gh-109118: Fix runtime crash when NameError happens in PEP 695 function (#109123) 2023-09-09 02:49:20 +00:00
fileutils.c gh-107913: Fix possible losses of OSError error codes (GH-107930) 2023-08-27 00:35:06 +03:00
flowgraph.c gh-108444: Replace _PyLong_AsInt() with PyLong_AsInt() (#108459) 2023-08-25 01:01:30 +02:00
formatter_unicode.c gh-92536: Remove PyUnicode_READY() calls (#105210) 2023-06-02 01:33:17 +02:00
frame.c gh-107149: Make PyUnstable_ExecutableKinds public (#108440) 2023-08-31 09:56:06 +02:00
frozen.c GH-108716: Turn off deep-freezing of code objects. (GH-108722) 2023-09-08 10:34:40 +01:00
frozenmain.c gh-106320: Remove private _PyInterpreterState functions (#106325) 2023-07-02 01:39:38 +00:00
future.c gh-106320: Remove more private _PyUnicode C API functions (#106382) 2023-07-03 22:35:46 +00:00
generated_cases.c.h gh-109039: Branch prediction for Tier 2 interpreter (#109038) 2023-09-11 18:20:24 +00:00
getargs.c gh-108765: Python.h no longer includes <ctype.h> (#108831) 2023-09-03 18:54:27 +02:00
getcompiler.c closes bpo-43278: remove unnecessary leading '\n' from COMPILER when build with GCC/Clang (GH-24606) 2021-02-25 20:24:21 -08:00
getcopyright.c Update copyright years to 2023. (gh-100848) 2023-01-08 09:13:25 -06:00
getopt.c gh-90300: split --help output into separate options (#30331) 2022-06-01 05:50:01 -04:00
getplatform.c bpo-32150: Expand tabs to spaces in C files. (#4583) 2017-11-28 17:56:10 +02:00
getversion.c gh-81057: Move Globals in Core Code to _PyRuntimeState (gh-99496) 2022-11-15 09:45:11 -07:00
hamt.c gh-106320: Remove private PyLong C API functions (#108429) 2023-08-24 18:53:50 +02:00
hashtable.c gh-108634: Py_TRACE_REFS uses a hash table (#108663) 2023-08-31 18:33:34 +02:00
import.c GH-108716: Turn off deep-freezing of code objects. (GH-108722) 2023-09-08 10:34:40 +01:00
importdl.c gh-106320: Remove private _PyErr C API functions (#106356) 2023-07-03 10:48:50 +00:00
importdl.h gh-106210 Remove Emscripten import trampoline (#106211) 2023-06-29 17:20:49 -07:00
initconfig.c gh-108753: Enhance pystats (#108754) 2023-09-06 15:54:59 +00:00
instrumentation.c gh-109039: Branch prediction for Tier 2 interpreter (#109038) 2023-09-11 18:20:24 +00:00
intrinsics.c gh-108765: Cleanup #include in Python/*.c files (#108977) 2023-09-06 15:56:08 +02:00
legacy_tracing.c gh-108765: Cleanup #include in Python/*.c files (#108977) 2023-09-06 15:56:08 +02:00
marshal.c gh-106320: Move private _PySet API to the internal API (#107041) 2023-07-22 17:04:34 +02:00
modsupport.c bpo-42327: C API: Add PyModule_Add() function (GH-23443) 2023-07-18 09:42:05 +03:00
mysnprintf.c Add a warning message about PyOS_snprintf (#95993) 2022-10-07 11:49:53 -07:00
mystrtoul.c gh-108765: Python.h no longer includes <ctype.h> (#108831) 2023-09-03 18:54:27 +02:00
opcode_targets.h GH-108614: Add `RESUME_CHECK` instruction (GH-108630) 2023-09-07 14:39:03 +01:00
optimizer.c gh-109039: Branch prediction for Tier 2 interpreter (#109038) 2023-09-11 18:20:24 +00:00
optimizer_analysis.c gh-105481: remove regen-opcode. Generated _PyOpcode_Caches in regen-cases. (#108367) 2023-08-23 18:39:00 +01:00
pathconfig.c gh-108765: Cleanup #include in Python/*.c files (#108977) 2023-09-06 15:56:08 +02:00
perf_trampoline.c gh-108765: Cleanup #include in Python/*.c files (#108977) 2023-09-06 15:56:08 +02:00
preconfig.c gh-106320: Remove private pylifecycle.h functions (#106400) 2023-07-04 09:41:43 +00:00
pyarena.c bpo-43244: Remove the pyarena.h header (GH-25007) 2021-03-24 02:23:01 +01:00
pyctype.c
…
pyfpe.c bpo-46315: Add ifdef HAVE_ feature checks for WASI compatibility (GH-30507) 2022-01-13 09:46:04 +01:00
pyhash.c gh-106320: Move private _PyHash API to the internal C API (#107026) 2023-07-22 13:49:37 +00:00
pylifecycle.c GH-108716: Turn off deep-freezing of code objects. (GH-108722) 2023-09-08 10:34:40 +01:00
pymath.c bpo-45440: Remove pymath.c fallbacks (GH-28977) 2021-10-15 19:45:34 +02:00
pystate.c gh-108987: Fix _thread.start_new_thread() race condition (#109135) 2023-09-11 17:27:03 +02:00
pystrcmp.c gh-108767: Replace ctype.h functions with pyctype.h functions (#108772) 2023-09-01 18:36:53 +02:00
pystrhex.c gh-108765: pystrhex: Replace stdlib.h abs() with Py_ABS() (#108830) 2023-09-02 23:15:54 +02:00
pystrtod.c gh-108765: Cleanup #include in Python/*.c files (#108977) 2023-09-06 15:56:08 +02:00
pythonrun.c gh-109179: Fix traceback display for SyntaxErrors with notes (#109197) 2023-09-11 19:18:34 +01:00
pytime.c gh-108765: Python.h no longer includes <sys/time.h> (#108775) 2023-09-02 17:51:19 +02:00
specialize.c gh-109039: Branch prediction for Tier 2 interpreter (#109038) 2023-09-11 18:20:24 +00:00
stdlib_module_names.h gh-105481: generate _specializations and _specialized_instructions from bytecodes.c (#105913) 2023-06-19 23:47:04 +01:00
structmember.c gh-106869: Use new PyMemberDef constant names (#106871) 2023-07-25 15:28:30 +02:00
suggestions.c gh-108765: Cleanup #include in Python/*.c files (#108977) 2023-09-06 15:56:08 +02:00
symtable.c gh-109207: Fix SystemError when printing symtable entry object. (GH-109225) 2023-09-10 15:04:24 +03:00
sysmodule.c gh-108753: Enhance pystats (#108754) 2023-09-06 15:54:59 +00:00
thread.c gh-108765: Cleanup #include in Python/*.c files (#108977) 2023-09-06 15:56:08 +02:00
thread_nt.h gh-81057: Move Threading-Related Globals to _PyRuntimeState (#100084) 2022-12-08 17:50:58 -07:00
thread_pthread.h gh-101538: Add experimental wasi-threads build (#101537) 2023-06-22 11:26:10 -07:00
thread_pthread_stubs.h gh-108765: Cleanup #include in Python/*.c files (#108977) 2023-09-06 15:56:08 +02:00
traceback.c gh-106922: Fix error location for constructs with spaces and parentheses (#108959) 2023-09-08 17:18:35 +01:00
tracemalloc.c gh-108765: Cleanup #include in Python/*.c files (#108977) 2023-09-06 15:56:08 +02:00

README 

Miscellaneous source files for the main Python shared library