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23,156 Commits 1,606 Branches 184 Tags
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Commit Graph

1192 Commits

Author SHA1 Message Date
drh
5f4a686f8c Simplification and size reduction to the printf logic. Remove the bFlags 
parameter from sqlite3VXPrintf() and sqlite3XPrintf().  Use sqlite3XPrintf()
instead of sqlite3_snprintf() for rendering P4 values in EXPLAIN output.

FossilOrigin-Name: 0bdb41c45aa1cc8e5c136aaa6605d54b401483bd
 2016-01-30 12:50:25 +00:00
drh
b17020265b Change the P4_INTARRAY so that always begins with a length integer. Print 
the content of the INTARRAY on EXPLAIN output.

FossilOrigin-Name: 6c520d5726e80b4251338c43c405270d150ea81e
 2016-01-30 00:45:18 +00:00
dan
de892d9660 Experimental attempt to make better use of covering indexes within OR queries. 
FossilOrigin-Name: a323ac3a9d42bd5cb38d724c7e1180584b91054c
 2016-01-29 19:29:45 +00:00
dan
d5cafb380e Remove a duplicate "p->magic = VDBE_MAGIC_RUN;" line from vdbeaux.c. 
FossilOrigin-Name: 688eb3b400a3f2f8005c341e8259f4c1485cb0ed
 2016-01-28 08:58:45 +00:00
drh
a7dc4a321d Small simplification to the prepare statement opcode memory reuse logic. 
Easier to read, and slightly smaller and faster.

FossilOrigin-Name: 8a1deae497edf3fa43fa96152d140405398c5ed6
 2016-01-25 02:15:02 +00:00
drh
20f272c96f Merge recent enhancements from trunk. 
FossilOrigin-Name: 327af5f644a49b2f41d5456958f9d61a2b704e1c
 2016-01-20 11:33:37 +00:00
dan
5c3aa0517e Improve performance of sqlite3VtabImportErrmsg(). 
FossilOrigin-Name: 18d61c8e40ed1466b6a3a2f53bf0eeb09687c20e
 2016-01-20 08:47:55 +00:00
drh
939e778bc8 Suppress the display of the P4 operand in EXPLAIN output when an opcode 
has been converted into a No-op.

FossilOrigin-Name: 9f8297f862a110ded686d091854fae20c6bc393c
 2016-01-20 02:36:12 +00:00
drh
4b31bda2c5 Remove an unnecessary memset() for a small size reduction and speed improvement. 
FossilOrigin-Name: 730d7efb6fef54ed7c1f4ae27e3b55778ea6ff01
 2016-01-20 02:01:02 +00:00
drh
6d664b4bb3 During compilation, transfer the azVar[0..nzVar-1] array from Parse to Vdbe 
rather than copying it.  Smaller and faster code.

FossilOrigin-Name: 80dd495f378614e4eca72e71e43061b1b94ee450
 2016-01-20 01:48:25 +00:00
drh
b8763639bb Fix two harmless compiler warnings about comparisons of dangling pointers. 
FossilOrigin-Name: 86944f193f1f06b64471953bb5713ecea7f3d803
 2016-01-19 17:54:21 +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
9b34abee30 Use sqlite3VdbeAddOp4() rather than a separate sqlite3VdbeChangeP4() call, for 
a slightly smaller and faster binary.

FossilOrigin-Name: a4258cd4613c55acacb5c7b61faa3de7eb0759d2
 2016-01-16 15:12:35 +00:00
drh
cb75bff3f7 Merge the latest fixes and enhancements from trunk. 
FossilOrigin-Name: 007e5c6df60f9743ac6914332f59925e4a7a861c
 2016-01-14 14:48:17 +00:00
drh
00dcecab19 Performance optimization in the sqlite3VdbeChangeP4() routine of the 
code generator.

FossilOrigin-Name: 28bd8d5fc541464b69886b7e886939035b42a869
 2016-01-11 22:58:50 +00:00
drh
604ce70448 Merge recent enhancements, and especially the WAL overwrite change, from trunk. 
FossilOrigin-Name: c4a858b228a164be2f89f5b01833f0b5e0d7735b
 2016-01-11 13:10:41 +00:00
dan
20d876fa1c Have the vdbe layer call sqlite3BtreeEnter() on all b-trees in use from within sqlite3VdbeExec() even in SQLITE_THREADSAFE=0 builds. This ensures that BtShared.db is set correctly. 
FossilOrigin-Name: d0214602d44d6b84b7463d530720e2560aee6edf
 2016-01-07 16:06:22 +00:00
drh
f56a2a07ff Merge changes for version 3.10.0. 
FossilOrigin-Name: fa4705c91f9650ecd7ec967dbbf0028aabd8a98c
 2016-01-06 15:14:53 +00:00
drh
0816905cdd Another attempt to get reuse of excess opcode array space working correctly 
on all architectures and platforms.

FossilOrigin-Name: 2f8583748abab1e15029d3a8693ba9a66c978c2b
 2016-01-05 03:39:25 +00:00
drh
11e3e538d6 Fix a corner case in the opcode-array reuse logic where the number of bytes of 
reusable space might be computed to be a negative number, due to unusual
system alignment restrictions and rounding error.

FossilOrigin-Name: 1aa530144643582658c8c1dd66548662f950efe3
 2016-01-04 23:43:47 +00:00
drh
721f26dc9a Merge in last-minute patches for the 3.10.0 beta. 
FossilOrigin-Name: c785cd7813e4ef6d6f2cb362a0f822713db6bcea
 2016-01-04 19:02:47 +00:00
drh
bd57308eef Remember the size of the Vdbe.aOp[] array in bytes, to avoid unnecessary 
calls to sqlite3_msize().

FossilOrigin-Name: 3e852804c85a5c9f4c4ffafd55d03af6d19fe5cc
 2016-01-01 16:42:09 +00:00
drh
3c19bb60d1 Avoid misaligned memory allocations on Sparc in sqlite3VdbeMakeReady(). 
FossilOrigin-Name: a304e34675404aee860fcc97fa4ffcc57c014812
 2016-01-01 16:26:22 +00:00
drh
8de1d77c60 Merge the latest enhancements from trunk. 
FossilOrigin-Name: c0be246a740c8f33a7c07e1414688364dee56ece
 2016-01-01 13:25:06 +00:00
drh
e5520e2f06 Small size and performance optimization to the VDBE comparison opcodes. 
FossilOrigin-Name: 7a0b9413fa94d3f4fa9751ddf9b213a1238954f1
 2015-12-31 04:34:26 +00:00
drh
173b60999e Merge recent enhancements from trunk. 
FossilOrigin-Name: f6c9273cab877b8b6b327250195f3392393d060a
 2015-12-16 19:47:54 +00:00
drh
567a43bbc3 Simplified alignment constraints in the memory reuse logic of 
sqlite3VdbeMakeReady().

FossilOrigin-Name: e998513e442ce1206b12dc28bdc996d7b5f9f94d
 2015-12-11 13:51:02 +00:00
drh
9b810ae8f3 Fix a memory allocation bug introduced last week by check-in 
[a9e819082ba].  The bug only appears on systems where the size of a structure
is not always a multiple of 8 - which in practice means only on 32-bit 
windows systems.

FossilOrigin-Name: 96d3e99ffe59b5280b8b7fc269c94a72e15c345b
 2015-12-11 04:11:17 +00:00
drh
5ef09bf918 Further simplifications to the VDBE code generation logic that flow out 
of the previous check-in.

FossilOrigin-Name: 6a5dfe85b519b920ce8c842057767a8793d92236
 2015-12-09 17:23:12 +00:00
drh
72ea29d7ae Changes to avoid undefined behavior in memset() and memcpy() and in the 
comparisons of pointers from different allocations.  All problems are found
by analysis tools - none have been seen in the wild.

FossilOrigin-Name: 901d0b8f3b72e96ffa8e9436993a12980f5ebd51
 2015-12-08 16:58:45 +00:00
drh
d797a9b5cb Changes to avoid obscure, theoretical undefined behavior. This is preventative 
measures only - no actual problems observed on tested compilers.

FossilOrigin-Name: a9e819082ba19e72db03bba37edfb7702ff489a5
 2015-12-07 16:43:44 +00:00
drh
1bb15fc973 Merge recent enhancements from trunk. 
FossilOrigin-Name: d1a1278d7f3306536dc9cbd8fb300898f1e373e8
 2015-12-02 20:40:26 +00:00
drh
3d4143a38a Do not try to eliminate No-ops at the end of VDBE program as this can cause 
problems for some DISTINCT handling algorithms, and does not improve
performance.  This also fixes an assertion fault found by libFuzzer.

FossilOrigin-Name: 19d9f9ce691963310fa73ac5ff728ea8dea9d2b2
 2015-11-24 00:49:44 +00:00
drh
c960dcbace Refactor the VdbeCursor object. It is now slightly smaller and faster and is 
easier to understand.

FossilOrigin-Name: 9b1d174d862500a627840008ffac4c8419dc97e2
 2015-11-20 19:22:01 +00:00
drh
769dc6e2a2 Merge the latest enhancements from trunk. 
FossilOrigin-Name: 7d6cfc79e7e5534ebacd980479917bc528a638f7
 2015-11-19 19:40:40 +00:00
drh
d797035ac7 Avoid unnecessary function prologues in the sqlite3VdbeAddOp3() routine. 
FossilOrigin-Name: 7c6a19ba9b0bdb1cc0b9a9796b7c1c114944d927
 2015-11-09 12:33:39 +00:00
drh
98a0e0083f Merge recent enhancements and bug fixes from trunk. 
FossilOrigin-Name: 78bc42e664e9fa9ee21ad9762c369f291fcdf5db
 2015-11-07 01:33:30 +00:00
drh
3adf8783b0 Avoid an unnecessary key comparison when doing an indexed lookup against an 
equality constraint.

FossilOrigin-Name: d741e1ccdce96e6142e294fbdd20a0282296dcea
 2015-11-06 20:22:25 +00:00
drh
f83075201f Work around a sign-extension bug in the optimizer on the HP C compiler that 
comes with HP/UX.

FossilOrigin-Name: 46c36b1543d7a8156eaa866c67080526153fb10d
 2015-11-06 20:13:48 +00:00
drh
c8bb430dfe A proposed patch for working around a bug in the optimizer for the HP compiler 
found on HP/UX Itanium.

FossilOrigin-Name: 8a171548e4f665f03d00af6dcb46669a4a78fad5
 2015-11-06 17:28:00 +00:00
drh
2ab410aa1e A different approach to handling integer/float comparisons. This seems to 
work better on systems where "long double" and "double" are the same type,
but still needs refinement and testing.

FossilOrigin-Name: a3f7614b2095fbc1eca54801b2da88f85f294ec5
 2015-11-06 14:59:07 +00:00
drh
8b8446fc21 Increase the precision of integer vs. floating-point comparisons. 
Candidate fix for ticket [38a97a87a6e4e8].

FossilOrigin-Name: cfcaa0ff276b1936418abe72c7e0c99d90d37885
 2015-11-06 01:04:41 +00:00
drh
70528d7868 The top of an index equality loop normally starts with OP_SeekGE and OP_IdxGT. 
This check-in adds a flag to OP_SeekGE such that it fails immediately if
the key is not equal, then jumps over the OP_IdxGT, saving a call to the key
comparison functions.  Consider this check-in a proof-of-concept.  It needs 
improvement before going on trunk.  Some tests fail, but only because they
new use fewer key comparisons than expected (which is a good thing!).

FossilOrigin-Name: 32e31b9bc8664afcd326a1ff3892d86dc5202474
 2015-11-05 20:25:09 +00:00
drh
d286b9fb7d Merge all the latest enhancements from trunk. 
FossilOrigin-Name: 395a153ff7b3c7a72f3d02b6fe76d72383f4e480
 2015-10-30 16:50:00 +00:00
drh
0030aaad67 Merge recent enhancements from trunk. Version now 3.9.1. 
FossilOrigin-Name: 26fa091d68e89a0b6af61ba706d23a9f37e8025a
 2015-10-16 20:53:57 +00:00
drh
be37c12423 Have the sqlite3VdbeSerialType() function go ahead and compute the serial 
length as well, since it is always needed.  This avoids unnecessary calls
to sqlite3VdbeSerialTypeLen().

FossilOrigin-Name: 2ad72be12477b0e8e33e56a9a17e29abbd283ec1
 2015-10-16 14:54:17 +00:00
drh
faf3727904 Use a lookup table to compute the content length for serial types less 
than 128, for a 1.2% performance improvement.

FossilOrigin-Name: 3395724814099d28829ef6875ca1ba77d6fe7ffa
 2015-10-16 14:23:42 +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