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1955 Commits

Author SHA1 Message Date
Raymond Hettinger c8aa08b172 Some (but not all) of the why code bitfield tests ran faster as 
separate equality tests.  Now, all are set to their best timing.
 2004-04-11 14:59:33 +00:00
Raymond Hettinger 5bed456056 Revert 2.393, elimination of pre-decrementing, which 
did not stand-up to additional timings.
 2004-04-10 23:34:17 +00:00
Raymond Hettinger 7eddd78a15 Use continue instead of break whereever possible. 2004-04-07 14:38:08 +00:00
Raymond Hettinger d3b836d202 * Improve readability and remove data dependencies by converting 
pre-increment forms to post-increment forms.  Post-incrementing
also eliminates the need for negative array indices for oparg fetches.

* In exception handling code, check for class based exceptions before
  the older string based exceptions.
 2004-04-07 13:17:27 +00:00
Raymond Hettinger 467a698bd2 Small code improvements for readability, code size, and/or speed. 
BINARY_SUBSCR:
    * invert test for normal case fall through
    * eliminate err handling code by jumping to slow_case

LOAD_LOCALS:
    * invert test for normal case fall through
    * continue instead of break for the non-error case

STORE_NAME and DELETE_NAME:
    * invert test for normal case fall through

LOAD_NAME:
    * continue instead of break for the non-error case

DELETE_FAST:
    * invert test for normal case fall through

LOAD_DEREF:
    * invert test for normal case fall through
    * continue instead of break for the non-error case
 2004-04-07 11:39:21 +00:00
Raymond Hettinger 7c9586545e Simplify previous checkin (bitfields for WHY codes). 
Restores the self-documenting enum declaration.
 2004-04-06 10:11:10 +00:00
Raymond Hettinger 06032cb664 Coded WHY flags as bitfields (taking inspiration from tp_flags). 
This allows multiple flags to be tested in a single compare
which eliminates unnecessary compares and saves a few bytes.
 2004-04-06 09:37:35 +00:00
Tim Peters 8a5c3c76be Since the fast_yield branch target was introduced, it appears that most 
tests of "why" against WHY_YIELD became useless.  This patch removes them,
but assert()s that why != WHY_YIELD everywhere such a test was removed.
The test suite ran fine under a debug build (i.e., the asserts never
triggered).
 2004-04-05 19:36:21 +00:00
Jeremy Hylton d4ceb31664 Bump the magic number to avoid sharing bytecode between 2.3 and 2.4. 
Revise the long comment that explained details of the magic number
in gory detail.
 2004-04-01 02:45:22 +00:00
Andrew MacIntyre da4d6cb573 OS/2 VACPP build updates/fixes 2004-03-29 11:53:38 +00:00
Armin Rigo 01ab279056 Marshal clean-up (SF patch #873224) 2004-03-26 15:09:27 +00:00
Nicholas Bastin 2786d90617 A few more PyThreadState_Get to PyThreadState_GET conversions 2004-03-25 02:16:23 +00:00
Nicholas Bastin e5662aedef Changed random calls to PyThreadState_Get() to use the macro 2004-03-24 22:22:12 +00:00
Nicholas Bastin c69ebe8d50 Enable the profiling of C functions (builtins and extensions) 2004-03-24 21:57:10 +00:00
Martin v. Löwis 83969eeeeb Decref all if ensure_fromlist fails. Fixes #876533. 
Backported to 2.3.
 2004-03-23 16:28:13 +00:00
Armin Rigo 5d2c68359b Lost reference. 2004-03-22 20:16:58 +00:00
Armin Rigo bf57a14522 Fix SF bug #765624. 2004-03-22 19:24:58 +00:00
Armin Rigo 80d937e986 Fix for line events in the case: 
def f(a):
    if a:
      print 5
    else:
      pass
 2004-03-22 17:52:53 +00:00
Nicholas Bastin a7604bf1b4 Moved tracebackobject to traceback.h, Closes SF Bug #497067 2004-03-21 18:37:23 +00:00
Raymond Hettinger ff5bc50bb0 Improve byte coding for multiple assignments. 
Gives 30% speedup on "a,b=1,2" and 25% on "a,b,c=1,2,3".
 2004-03-21 15:12:00 +00:00
Armin Rigo 9dbf9084e8 Cancelled checkin, sorry. 2004-03-20 21:50:13 +00:00
Armin Rigo 1515fc2a01 A 2% speed improvement with gcc on low-endian machines. My guess is that this 
new pattern for NEXTARG() is detected and optimized as a single (*short)
loading.
 2004-03-20 20:03:17 +00:00
Raymond Hettinger fba1cfc49a LIST_APPEND is predicably followed by JUMP_ABSOLUTE. 
Reduces loop overhead by an additional 10%.
 2004-03-12 16:33:17 +00:00
Raymond Hettinger 2d783e9b16 Move the code for BREAK and CONTINUE_LOOP to be near FOR_ITER. 
Makes it more likely that all loop operations are in the cache
at the same time.
 2004-03-12 09:12:22 +00:00
Raymond Hettinger db0de9e7ca Speedup for-loops by inlining PyIter_Next(). Saves duplicate tests 
and a function call resulting in a 15% reduction of total loop overhead
(as measured by timeit.Timer('pass')).
 2004-03-12 08:41:36 +00:00
Raymond Hettinger f114a3ae63 Refactor and optimize code for UNPACK_SEQUENCE. 
* Defer error handling for wrong number of arguments to the
  unpack_iterable() function.  Cuts the code size almost in half.

* Replace function calls to PyList_Size() and PyTuple_Size() with
  their smaller and faster macro counterparts.

* Move the constant structure references outside of the inner loops.
 2004-03-08 23:25:30 +00:00
Raymond Hettinger dd80f76265 SF patch #910929: Optimize list comprehensions 
Add a new opcode, LIST_APPEND, and apply it to the code generation for
list comprehensions.  Reduces the per-loop overhead by about a third.
 2004-03-07 07:31:06 +00:00
Hye-Shik Chang 30e97dbe96 SF Patch #902444: Use process scope thread on FreeBSD. System scope 
is too expensive on FreeBSD's KSE threading infrastructure and
even test_threadedimport fails on default setting.
 2004-03-04 06:35:57 +00:00
Skip Montanaro 6babcc2ad4 typo 2004-03-03 08:42:23 +00:00
Skip Montanaro 786ea6bc23 Add pystack definition to Misc/gdbinit with some explanation of its behavior 
and add flag comments to ceval.c and main.c alerting people to the coupling
between pystack and the layout of those files.
 2004-03-01 15:44:05 +00:00
Michael W. Hudson ecfeb7f095 This is my patch #876198 plus a NEWS entry and a header frob. 
Remove the ability to use (from C) arbitrary objects supporting the
read buffer interface as the co_code member of code objects.
 2004-02-12 15:28:27 +00:00
Skip Montanaro 7befb9966e remove support for missing ANSI C header files (limits.h, stddef.h, etc). 2004-02-10 16:50:21 +00:00
Raymond Hettinger a72169871d SF patch #884022: dynamic execution profiling vs opcode prediction 
(Contributed by Andrew I MacIntyre.)

disables opcode prediction when dynamic execution
profiling is in effect, so the profiling counters at
the top of the main interpreter loop in eval_frame()
are updated for each opcode.
 2004-02-08 19:59:27 +00:00
Skip Montanaro f1afe6682c Remove support for systems defining Py_PTHREAD_D[467] in 
Python/thread_pthread.h.
 2004-02-07 13:00:18 +00:00
Raymond Hettinger 1dd8309246 SF patch #864059: optimize eval_frame 
Simplified version of Neal Norwitz's patch which adds gotos for
opcodes that set "why".  This skips a number of tests where the
outcome of the tests are known in advance.
 2004-02-06 18:32:33 +00:00
Hye-Shik Chang ff83c2bacc Fix input() builtin function to respect compiler flags. 
(SF patch 876178, patch by mwh, unittest by perky)
 2004-02-02 13:39:01 +00:00
Skip Montanaro b9949dbe6c Remove support for DYNIX, IRIX 4, --with-sgi-dl, --with-dl-dld 2004-01-17 04:04:13 +00:00
Skip Montanaro 4d474becd8 remove DGUX support. 2004-01-17 00:29:32 +00:00
Raymond Hettinger b86269db45 Apply pre-sizing optimization to a broader class of objects. 
Formerly, the length was only fetched from sequence objects.
Now, any object that reports its length can benefit from pre-sizing.
 2004-01-04 11:00:08 +00:00
Raymond Hettinger 77f3c87113 Apply map/zip pre-sizing optimization to a broader class of objects. 
Formerly, the length was only fetched from sequence objects.
Now, any object that reports its length can benefit from pre-sizing.
 2004-01-04 08:54:44 +00:00
Jeremy Hylton ecd9129c94 Add comment to mollify Tim. 2004-01-02 23:25:32 +00:00
Hye-Shik Chang 7db07e6972 Fix gcc 3.3 warnings related to Py_UNICODE_WIDE. 2003-12-29 01:36:01 +00:00
Raymond Hettinger 64958a15d7 Guido grants a Christmas wish: 
sorted() becomes a regular function instead of a classmethod.
 2003-12-17 20:43:33 +00:00
Fred Drake d75ede3238 Remove the PendingDeprecationWarning from apply(). apply() will 
remain deprecated in the documentation.
 2003-12-05 17:34:27 +00:00
Tim Peters 1d7323e4e7 Py_Finalize(): disabled the second call of cyclic gc, and added extensive 
comments about why both calls to cyclic gc here can cause problems.

I'll backport to 2.3 maint.  Since the calls were introduced in 2.3,
that will be the end of it.
 2003-12-01 21:35:27 +00:00
Guido van Rossum 6c9e130524 - Removed FutureWarnings related to hex/oct literals and conversions 
and left shifts.  (Thanks to Kalle Svensson for SF patch 849227.)
  This addresses most of the remaining semantic changes promised by
  PEP 237, except for repr() of a long, which still shows the trailing
  'L'.  The PEP appears to promise warnings for operations that
  changed semantics compared to Python 2.3, but this is not
  implemented; we've suffered through enough warnings related to
  hex/oct literals and I think it's best to be silent now.
 2003-11-29 23:52:13 +00:00
Jack Jansen eddc1449ba Getting rid of all the code inside #ifdef macintosh too. 2003-11-20 01:44:59 +00:00
Jack Jansen 4bae2d5e46 Getting rid of code dependent on GUSI or the MetroWerks compiler. 2003-11-19 22:52:23 +00:00
Jack Jansen a53f4eba19 Getting rid of code conditional on TARGET_API_MAC_*. 2003-11-19 16:34:04 +00:00
Jack Jansen 37249c5524 WITHOUT_FRAMEWORKS conditional code bites the dust: this was for 
pre-carbon MacOS9 support.
 2003-11-19 15:32:46 +00:00