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232 Commits

Author SHA1 Message Date
drh
7cc84c2cdd Remove the VdbeOp.opflags field and its associated initialization overhead. 
Update mkopcodeh.tcl to reorder opcode numbers to help the resolveP2Values()
routine run faster.

FossilOrigin-Name: 099478fa7521ba52262ef2bf24dd8f0114ce92e1
 2016-04-11 13:36:42 +00:00
drh
dbf8a16cb3 Merge 3.12.0 beta changes from trunk. 
FossilOrigin-Name: 3296a0ceedef43c2790f0b36471f91138a575243
 2016-03-21 15:32:19 +00:00
drh
f71a366407 Some pragmas can be reused without an automatic reprepare. 
FossilOrigin-Name: db1ce7e13e656fcd2766f1b1f225cbfefe8f73ad
 2016-03-16 20:44:45 +00:00
drh
1a606f8246 Merge enhancements and fixes from trunk. 
FossilOrigin-Name: f040a5bb62f3473fba6450c97c68f538d1df21ef
 2016-02-09 15:44:18 +00:00
drh
2fade2f791 Make sure every co-routines has its own set of temporary registers and does 
not share temporaries, since a co-routine might expect the content of a
temporary register to be preserved across an OP_Yield.
Proposed fix for ticket [d06a25c84454a].

FossilOrigin-Name: ca72be8618e5d466d6f35819ca8bbd2b84269959
 2016-02-09 02:12:20 +00:00
drh
20f272c96f Merge recent enhancements from trunk. 
FossilOrigin-Name: 327af5f644a49b2f41d5456958f9d61a2b704e1c
 2016-01-20 11:33:37 +00:00
drh
dad300d8e1 Fix a problem with SQLITE_TEST_REALLOC_STRESS. 
FossilOrigin-Name: 0aaf3febb00f622c5ef0853b2491d69f7ca7a21e
 2016-01-18 00:20:26 +00:00
drh
2ce1865dd8 Improvements to the way sqlite3VdbeAddOpList() works, resulting in a slightly 
smaller and faster binary.

FossilOrigin-Name: 88ceb588bcdb3ca86d0c58cfdeb61b5fe070872f
 2016-01-16 20:50:21 +00:00
drh
d286b9fb7d Merge all the latest enhancements from trunk. 
FossilOrigin-Name: 395a153ff7b3c7a72f3d02b6fe76d72383f4e480
 2015-10-30 16:50:00 +00:00
drh
6b86881788 Merge recent trunk enhancements. 
FossilOrigin-Name: 6a513c05850949900f396c7a61accb97cc6d2af5
 2015-09-03 14:48:25 +00:00
drh
163c29c5f3 Merge enhancements from trunk. 
FossilOrigin-Name: 25ee3000e94d60d8c1d7b980f416dcc33eb11105
 2015-09-03 14:39:33 +00:00
drh
076e85f59c Add the sqlite3VdbeLoadString() and sqlite3VdbeMultiLoad() routines to help 
with code generation, especially on PRAGMAs.  Rename sqlite3VdbeAddGoto()
to just sqlite3VdbeGoto().

FossilOrigin-Name: 847387ec8e6fef283899578fb232b2c23b00ee5b
 2015-09-03 13:46:12 +00:00
drh
0ff287fb01 Add and use the sqlite3VdbeChangeOpcode() routine. Simplify the implementation 
of the other sqlite3VdbeChange*() routines.

FossilOrigin-Name: 0a5b00e493efae58252f9fc7bde5a469645942d5
 2015-09-02 18:40:33 +00:00
drh
2991ba050b Add the sqlite3VdbeAddGoto(v,i) routine as a shorthand for 
sqlite3VdbeAddOp2(v,OP_Goto,0,i).

FossilOrigin-Name: be78f413df1b0d874b44a866ef6bf17543d7e8a2
 2015-09-02 18:19:00 +00:00
drh
bec2476afc Merge in all the trunk changes from the previous year. This breaks the 
cursor-hint mechanism, but provides a baseline for trouble-shooting.

FossilOrigin-Name: 82a7a61bc0883b1e7432548e4890791717aa1bb3
 2015-08-13 20:07:13 +00:00
drh
59b4bd4840 Merge all the latest enhancements from trunk. This merge include FTS5 
and a number of notable performance enhancements.

FossilOrigin-Name: 39936b33b0668aad81aa574d4d74c92b0ddd218a
 2015-06-30 16:29:59 +00:00
drh
9c7c913cd6 Cache the sqlite3_context structure in the P4 operand of VDBE programs 
for faster SQL function dispatch.

FossilOrigin-Name: 2abc44eb3b9d489321baa50bc25e17dafbda3687
 2015-06-26 18:16:52 +00:00
drh
5600329bc0 Merge all recent enhancements and fixes from trunk. 
FossilOrigin-Name: 199bfb67fdf642cca6cd5d460fa4dc602b94837a
 2015-06-17 18:18:51 +00:00
drh
97bae794c2 Add a new opcode to the VDBE that gives the b-tree a hint about the set 
of columns in a table or index that are actually used by the query.

FossilOrigin-Name: f167bba446b78dd7538d0b2bae3e6678f3b1ba28
 2015-06-05 15:59:57 +00:00
drh
df3c171881 Merge all recent trunk enhancements into the sessions branch. 
FossilOrigin-Name: 5f14f34f072921e229bc20a5185c0cdb3f464c04
 2015-04-12 01:33:37 +00:00
dan
7004f3f6a3 Improve performance of multi-field sorts where the first field has a low cardinality. 
FossilOrigin-Name: 601e7b6b8e6bfabda03b70f75094c9014e3a3c49
 2015-03-30 12:06:26 +00:00
drh
04e8a58669 Merge recent trunk enhancements, including the read-after-ROLLBACK change 
and the addition of sqlite3_stmt_scanstatus() support, as well as various
minor bug fixes.

FossilOrigin-Name: f09055f3c4348264c7336f90646375f0d98b061e
 2014-11-18 21:20:57 +00:00
drh
518140ed04 Change the SQLITE_SCANSTAT_EST parameter so that it returns a double for 
the estimated number of output rows per loop, rather than a 64-bit integer.
Revise the output format for the ".scanstats on" in the shell to make use
of this new capability.

FossilOrigin-Name: f9684000665ae7ef6f89c3773612b8286b8f545a
 2014-11-06 03:55:10 +00:00
dan
037b5324bd Remove unused variable from struct WhereInfo. Add some explanatory comments to new code. 
FossilOrigin-Name: f5313e0c680d9baebefb1cf50ddadedd4418a334
 2014-11-03 11:25:32 +00:00
dan
6f9702ed4d If SQLITE_ENABLE_STMT_SCANSTATUS is defined, record the number of times each VDBE opcode is executed. Derive the values returned by sqlite3_stmt_scanstatus() from these records on demand. 
FossilOrigin-Name: 9ea37422a8cc2fce51bb10508e5e90f40fd4b511
 2014-11-01 20:38:06 +00:00
dan
04489b6dce Add the experimental sqlite3_stmt_scanstatus() API. 
FossilOrigin-Name: 6a9bab34aeb6a01b612211a28c140de60a3e883c
 2014-10-31 20:11:32 +00:00
drh
6b011d83b4 Merge all recent trunk changes into the sessions branch. 
FossilOrigin-Name: 6406b77f2c447751a2fbb16f01c61cdcfd6af59e
 2014-09-21 22:49:20 +00:00
drh
75179ded97 Reduce the number of arguments to RecordCompare functions from 4 to 3, 
resulting in a small performance increase.

FossilOrigin-Name: 8239c35aedd583af79505378bb7dbb78346a3f45
 2014-09-16 14:37:35 +00:00
drh
f257b4c613 Merge the latest trunk enhancements into the sessions branch. 
FossilOrigin-Name: a5d94eaba6aa12ff16d2a0af2fc752bcdb461877
 2014-06-30 20:02:55 +00:00
drh
3eddb23e31 Change the VDBE to export the sqlite3MemCompare() routine and thus free 
where.c from the dependency on vdbeInt.h.

FossilOrigin-Name: d186d1ac3c47f0d814636c4b8386a6065a294750
 2014-06-28 14:28:06 +00:00
drh
652cc4b6dc Merge all recent changes from trunk, 
including the fix for the OP_SCopy-vs-OP_Copy problem.

FossilOrigin-Name: 9515c8344a6743bbb0c6a6e49fb79fb3139090df
 2014-04-03 16:35:33 +00:00
drh
a1f7c0a21c Enhance the sqlite3VdbeRecordCompare() routines so that if they encounter 
database corruption, they will set the UnpackedRecord.isCorrupt field and
return 0.  The sqlite3BtreeMovetoUnpacked() routine detects this and returns
SQLITE_CORRUPT, causing the corruption to be reported back to the top-level.

FossilOrigin-Name: 7fa85eaaaf6d211378620d728a759fdfe30a15b0
 2014-03-28 03:12:48 +00:00
drh
181aed3c25 Version 3.8.4 for sessions (plus two minor fixes). 
FossilOrigin-Name: 917c410808756e1697bd628f4c9c57dd13d08ce7
 2014-03-11 01:48:06 +00:00
drh
b06a4ec1f0 Attempt to work around MSVC's treatment of __LINE__ as a non-constant value 
in "Edit and Continue" mode by avoiding the use of __LINE__ when
SQLITE_VDBE_COVERAGE is not defined.

FossilOrigin-Name: 0a5318bc272b844e937cb1df3a07224034bc3450
 2014-03-10 18:03:09 +00:00
drh
7826a9b83f Merge the performance enhancements of trunk (and some obscure bug fixes) 
into the sessions branch.

FossilOrigin-Name: 7f51ad97f0b24c57453d58faf25eee68861faa23
 2014-03-04 14:34:14 +00:00
drh
295aedf097 Fix compiler warnings. 
FossilOrigin-Name: ba8993727e5752cbc92c7d78437e9e0510c899f7
 2014-03-03 18:25:24 +00:00
dan
3833e934d3 Remove the vdbeRecordCompareLargeHeader function. Fix some other details. 
FossilOrigin-Name: 3861e853105cb8da344c7eebd2e455622b26395e
 2014-03-01 19:44:56 +00:00
dan
3b9330f83c Further changes to sqlite3VdbeRecordCompare(). 
FossilOrigin-Name: 570893740067a7caa952f259fa078cdf67017d71
 2014-02-27 20:44:18 +00:00
dan
1fed5dab0d Attempt to speed up sqlite3VdbeRecordCompare() by various means. This code is in an interim state. 
FossilOrigin-Name: 85206e0bbac29adab52bef795f6d1479f2ae2c0e
 2014-02-25 21:01:25 +00:00
drh
15ab9418d9 Remove an unused variable from the VDBE_PROFILE compile-time option. Keep the 
opcode count in an u32 instead of an int.

FossilOrigin-Name: 4df0ac9023d9261145a4425a508ba009a10276fc
 2014-02-24 14:24:01 +00:00
drh
5655c549aa Add the VdbeCoverageNeverTaken() macro, and comments that better describe how 
the VDBE branch coverage measurement works.  Add some tags to provide 100%
VDBE branch coverage.

FossilOrigin-Name: c1e94169dd8eb80b4d18c73be9f81585330d11ad
 2014-02-19 19:14:34 +00:00
drh
688852ab15 Add logic to do test coverage measurements on the VDBE code. 
FossilOrigin-Name: ce184c7bb16988641d37c908d9b3042456d4be3d
 2014-02-17 22:40:43 +00:00
drh
c187698614 Bring in all the latest trunk changes, including the Common Table 
Expressions implementation.

FossilOrigin-Name: 9b43e559195680e558264c4c00d34dc9cf9d9146
 2014-01-24 14:05:18 +00:00
drh
61019c7883 Omit OP_Close operations that occur immediately prior to OP_Halt and which 
cannot be jumped over.

FossilOrigin-Name: 874b7e9999811c288ad41d07709f88e458d2d497
 2014-01-04 16:49:02 +00:00
drh
762c1c4071 Avoid unnecessary affinity transformations when building indices using 
data from a table.

FossilOrigin-Name: 10d851353c2abeadbd2852c210a7ff9f7f513e5d
 2014-01-02 19:35:30 +00:00
drh
d9e3c267b4 Merge the latest trunk changes into the sessions branch. 
FossilOrigin-Name: cfd110bf5db2c1993a5e2ca718648bd9c17ee22c
 2013-12-24 12:09:42 +00:00
drh
9ac7962ace Show changes to the column cache when PRAGMA vdbe_addoptrace=ON is set. 
FossilOrigin-Name: 4c6a659c432e4f7c0285f58675a67f967b07bb0d
 2013-12-18 15:11:47 +00:00
drh
28935364ef If the SQLITE_ENABLE_CURSOR_HINTS macro is defined, then invoke the 
sqlite3BtreeCursorHint() interface to provide hints to the storage engine
about rows that need not be returned.  Hints can be disabled using
SQLITE_TESTCTRL_OPTIMIZATIONS with SQLITE_CursorHints (0x2000).  Cursor
hints are not used by the built-in storage engine of SQLite but might
be useful to applications that provide their own storage engine.  The
current code is work-in-progrss and contains bugs.

FossilOrigin-Name: 3a9bec524ef2de44028b4058e67dc962082888d3
 2013-12-07 20:39:19 +00:00
drh
212c6be141 Merge the skip-scan optimization into the sessions branch. 
FossilOrigin-Name: 7596d1bf8040f7cefc7b22c5e609acc5d66820bf
 2013-11-14 19:18:39 +00:00
drh
84e55a80db Add the "PRAGMA vdbe_eqp" command, only available with SQLITE_DEBUG. Simplify 
some of the other debugging logic.

FossilOrigin-Name: 8ce33f4c818e1c785a1c176f6f631b8184e1166b
 2013-11-13 17:58:23 +00:00