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30 Commits

Author SHA1 Message Date
drh
27a348c7a0 Remove the out2-prerelease VDBE opcode property and its associated code, 
for a 0.5% performance improvement.

FossilOrigin-Name: e29c7f2c910dac07f0f92dfef5e0e743141954eb
 2015-04-13 19:14:06 +00:00
drh
66e810247e Make sure the OP_Next and OP_NextIfOpen opcodes are numbered close together 
for efficiency in switch() statements.  OP_Prev and OP_PrevIfOpen too.

FossilOrigin-Name: d4ccf0f5c656c8f0e1c32d5f7971b131f42c3cbd
 2013-11-21 17:24:18 +00:00
drh
81316f8908 Automatically generated comments on many VDBE opcodes when in SQLITE_DEBUG 
most.  Comments derive from the "Synopsis:" field added to each opcode
definition in vdbe.c.

FossilOrigin-Name: 5f310c6a22b8bb5f860296074aee130c14101681
 2013-10-29 20:40:47 +00:00
drh
8c8a8c4573 More than double the speed of the resolveP2Values() routine in vdbeaux.c by 
moving from an extended if-else on every opcode to a switch.  Opcodes are
reordered in mkopcodesh.awk to put the switched opcodes close together,
for additional performance and to reduce code footprint.

FossilOrigin-Name: 924f7e4d7a8fa2fe9100836663f3733b6e1a9084
 2013-08-06 07:45:08 +00:00
drh
93952eb8c5 Simplify the OPFLG processing logic in the VDBE for a speed boost in the 
VDBE processing loop and a reduction in code size.

FossilOrigin-Name: 3352b3eba545c3128efb7665ec91d4df3b16011d
 2009-11-13 19:43:43 +00:00
drh
ccaf7731d7 Bug fix in the recent changes to mkopcodeh.awk. 
FossilOrigin-Name: 6610cac435428434bc978d5e4df92aa1e431240b
 2009-11-02 18:44:58 +00:00
drh
b24a2001cc Update the generator AWK script for opcodes.h so that it always generates 
opcode numbers in the same order and is not dependent on the hash order
of opcode names within AWK.

FossilOrigin-Name: e730195f52429dc1bc4c1559880effd68e3eced9
 2009-11-02 18:14:50 +00:00
drh
91fd4d46ad Miscellaneous code simplifications and cleanup and test coverage 
enhancements. (CVS 4730)

FossilOrigin-Name: af129b6d158cc90ce9752dd6383c1de47f7b3e43
 2008-01-19 20:11:25 +00:00
drh
ca48c90f60 Remove the OP_HexBlob instruction and code OP_Blob directly. Reduce 
the amount of memory allocation required to encode blob literals.
Remove the "out2" instruction type.  Other minor optimizations. (CVS 4726)

FossilOrigin-Name: 0e50c0200a3c1c04e63cbb55a7255cdbbd225347
 2008-01-18 14:08:24 +00:00
drh
9cbf3425fb Registerification of the VDBE is complete. The operand stack has been 
removed from the code.  All instructions operate out of registers only. (CVS 4718)

FossilOrigin-Name: 706b41b70bd1e2030e6fa44358c38a26c5cf0985
 2008-01-17 16:22:13 +00:00
drh
3de120b032 Fix mixing quote excapes in an awk script. Ticket #2877. (CVS 4702) 
FossilOrigin-Name: 05fbca91085cb1b271a05e62181596b4f6f1bb9e
 2008-01-10 00:08:43 +00:00
drh
5b6afba924 Registerify binary operators. Add register tracing to debugging output. (CVS 4686) 
FossilOrigin-Name: 66396d2f0289e36b5fc0af5078c08d1b17f342ae
 2008-01-05 16:29:28 +00:00
drh
b1fdb2adea Get rid of OP_Dup, OP_MemStore, OP_MemLoad, and OP_MemMove. Replace 
with OP_Copy, OP_SCopy, and OP_Move.  Add the infrastructure for
operation properties in1, in2, in3, out2, and out3 but do not yet
use any of these. (CVS 4682)

FossilOrigin-Name: cc149eb9ca3c672cc6fea3528353234ac2ed5745
 2008-01-05 04:06:03 +00:00
drh
4c583128bd Implement the out2-prerelease opcode design pattern. (CVS 4681) 
FossilOrigin-Name: fe057a88d0038ac349ea41883b979ceba6ae410a
 2008-01-04 22:01:03 +00:00
drh
4aeb7bf778 Fix mkopcodeh.awk so that it works on a mac. (CVS 4679) 
FossilOrigin-Name: 59d3dfa41f99e99b836649a0870cbfc1c275a654
 2008-01-04 19:12:35 +00:00
danielk1977
287fb61c6b Some modifications to insert.c to work without using the stack. (CVS 4678) 
FossilOrigin-Name: d9ac6beef538376d0ea0a1daa95cf1dfe36143cf
 2008-01-04 19:10:28 +00:00
drh
3a40f696d4 Replace the NOPUSH_MASKs with a bit-vector mechanism that can contain 
several different properties about each opcode. (CVS 4677)

FossilOrigin-Name: 042dcb9621934d0318a7c6e9cd08b20a569db367
 2008-01-04 16:50:09 +00:00
drh
0a99ded1ba Add an explicit type conversion in an AWK script to work around 
bugs in cygwin.  Ticket #2713. (CVS 4485)

FossilOrigin-Name: 043cee2fd9319f24bb5c70d6619bfe8f8e2e3b91
 2007-10-12 18:36:26 +00:00
drh
0ed4fcdcac Enhanced comments on the opcode.h building script. (CVS 3033) 
FossilOrigin-Name: 7ccebf68eb1f707c2349004ae33575b484cc31a2
 2006-01-26 14:29:58 +00:00
drh
fa3b19ef3d Reduce the number of distinct token symbols in the parser so that the parser 
can store tokens in a single byte and thus be smaller in size. (CVS 2776)

FossilOrigin-Name: 2dfc9863919c9eb1fd1064ab2817d752dd7f9293
 2005-11-24 22:22:29 +00:00
drh
b726ee6d1c Make due with "sub()" instead of "gsub()" in awk scripts so that builds will 
work on Solaris which will runs an archiac version of AWK. (CVS 2658)

FossilOrigin-Name: 449a7895995013720f5d4c7b3b7f5bd6a5413717
 2005-09-05 20:35:25 +00:00
danielk1977
7a5147c5c9 Change 'stack' to the more descriptive 'no-push' in vdbe.c. (CVS 2429) 
FossilOrigin-Name: 7e54d3c7289c091d449844d21b923e553f1d1f5f
 2005-03-29 13:07:00 +00:00
danielk1977
bc04f8529d Reduce the space allocated for the runtime virtual machine stack. (CVS 2428) 
FossilOrigin-Name: 7d6818da33a87076d1faf35ffc15a3aada0533b3
 2005-03-29 08:26:13 +00:00
danielk1977
24c8ab8030 Document SQLITE_DEFAULT_CACHE_SIZE and SQLITE_DEFAULT_TEMP_CACHE_SIZE macros. (CVS 2320) 
FossilOrigin-Name: ddcea6f8891b02e64f96591af161feb55c00a72c
 2005-02-09 01:40:23 +00:00
drh
0602c2e4a5 Change to mkopcodeh.awk to accomodate windows systems. (CVS 2257) 
FossilOrigin-Name: 39786aa894d620480661ed8867961f9f1ef33e40
 2005-01-21 17:07:22 +00:00
drh
daa28ff326 Fix a problem with the automatic generation of the opcode name table. (CVS 2163) 
FossilOrigin-Name: 9eefabc92d3924bcaa2ae0f425fe5635824c64ec
 2004-12-10 17:17:18 +00:00
drh
722e95ac65 Minor optimizations in the pragma module. (CVS 2029) 
FossilOrigin-Name: 63efd50a1608eb4ccac44a233c0f77c3956f9fa0
 2004-10-25 20:33:44 +00:00
drh
a1d65d0221 The mkopcodeh.awk script removes \r for use with msys. Ticket #954. (CVS 2016) 
FossilOrigin-Name: c4fb44fd5f89960ec09c9ed64aeb037b5ca55ea2
 2004-10-10 19:11:35 +00:00
drh
b327f77358 Move some work out of the makefiles and into awk scripts in separate files. 
Ticket #940. (CVS 2005)

FossilOrigin-Name: 4d0f29d54c0ccb153abd77d9b62b6461ec1e978f
 2004-10-06 15:03:57 +00:00
drh
f2bc013c70 Save about 800 bytes of code space by aligning TK_ and OP_ constants so that 
we do not have to translate between them. (CVS 1998)

FossilOrigin-Name: 4c817e3f293a9c1365e632f7dc13ae440263332a
 2004-10-04 13:19:23 +00:00