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Overview
Comment: | Rename the OP_MX_JUMP macro to SQLITE_MX_JUMP_OPCODE to avoid confusing the opcode name generator. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
e554a4c38bda9c73bf129bb7c665c53c |
User & Date: | drh 2016-04-11 16:35:05.793 |
Context
2016-04-11
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16:43 | Simplification and performance improvements in sqlite3ExprDup() and its subroutines. More work is possible in this area. (check-in: 476cc28388 user: drh tags: trunk) | |
16:35 | Rename the OP_MX_JUMP macro to SQLITE_MX_JUMP_OPCODE to avoid confusing the opcode name generator. (check-in: e554a4c38b user: drh tags: trunk) | |
14:49 | Performance improvement in sqlite3ExprDelete(). (check-in: 60ad80e3af user: drh tags: trunk) | |
Changes
Changes to src/vdbeaux.c.
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560 561 562 563 564 565 566 | pOp = &p->aOp[p->nOp-1]; while(1){ /* Only JUMP opcodes and the short list of special opcodes in the switch ** below need to be considered. The mkopcodeh.tcl generator script groups ** all these opcodes together near the front of the opcode list. Skip ** any opcode that does not need processing by virtual of the fact that | | | | 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 | pOp = &p->aOp[p->nOp-1]; while(1){ /* Only JUMP opcodes and the short list of special opcodes in the switch ** below need to be considered. The mkopcodeh.tcl generator script groups ** all these opcodes together near the front of the opcode list. Skip ** any opcode that does not need processing by virtual of the fact that ** it is larger than SQLITE_MX_JUMP_OPCODE, as a performance optimization. */ if( pOp->opcode<=SQLITE_MX_JUMP_OPCODE ){ /* NOTE: Be sure to update mkopcodeh.tcl when adding or removing ** cases from this switch! */ switch( pOp->opcode ){ case OP_Transaction: { if( pOp->p2!=0 ) p->readOnly = 0; /* fall thru */ } |
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Changes to tool/mkopcodeh.tcl.
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256 257 258 259 260 261 262 | puts "" puts "/* The sqlite3P2Values() routine is able to run faster if it knows" puts "** the value of the largest JUMP opcode. The smaller the maximum" puts "** JUMP opcode the better, so the mkopcodeh.tcl script that" puts "** generated this include file strives to group all JUMP opcodes" puts "** together near the beginning of the list." puts "*/" | | | 256 257 258 259 260 261 262 263 | puts "" puts "/* The sqlite3P2Values() routine is able to run faster if it knows" puts "** the value of the largest JUMP opcode. The smaller the maximum" puts "** JUMP opcode the better, so the mkopcodeh.tcl script that" puts "** generated this include file strives to group all JUMP opcodes" puts "** together near the beginning of the list." puts "*/" puts "#define SQLITE_MX_JUMP_OPCODE $mxJump /* Maximum JUMP opcode */" |