Commit Graph

400 Commits

Author SHA1 Message Date
Martin v. Löwis
e440e47e91 Patch #957398: Add public API for Generator Object/Type. 2004-06-01 15:22:42 +00:00
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
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
Armin Rigo
bf57a14522 Fix SF bug #765624. 2004-03-22 19:24:58 +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
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
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
Jack Jansen
eddc1449ba Getting rid of all the code inside #ifdef macintosh too. 2003-11-20 01:44:59 +00:00