/ Check-in [e375fe52]
Login

Many hyperlinks are disabled.
Use anonymous login to enable hyperlinks.

Overview
Comment:Minor performance optimization in the comparison opcodes of the VDBE.
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1:e375fe52cea7903c11ecef71c3452c67a96b663e
User & Date: drh 2016-04-04 13:46:24
Context
2016-04-04
14:57
Enhance sqlite3session_apply() and sqlite3session_apply_strm() so that conflicts are retried before the xConflict() callback is invoked, as long as the "apply" operation is making forward progress. check-in: 42a21966 user: drh tags: trunk
13:46
Minor performance optimization in the comparison opcodes of the VDBE. check-in: e375fe52 user: drh tags: trunk
12:38
Fix harmless compiler warnings. check-in: 0213d6af user: drh tags: trunk
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to src/vdbe.c.

2012
2013
2014
2015
2016
2017
2018

2019
2020
2021
2022
2023

2024
2025
2026
2027
2028
2029
2030
      }
      break;
    }
  }else{
    /* Neither operand is NULL.  Do a comparison. */
    affinity = pOp->p5 & SQLITE_AFF_MASK;
    if( affinity>=SQLITE_AFF_NUMERIC ){

      if( (flags1 & (MEM_Int|MEM_Real|MEM_Str))==MEM_Str ){
        applyNumericAffinity(pIn1,0);
      }
      if( (flags3 & (MEM_Int|MEM_Real|MEM_Str))==MEM_Str ){
        applyNumericAffinity(pIn3,0);

      }
    }else if( affinity==SQLITE_AFF_TEXT ){
      if( (flags1 & MEM_Str)==0 && (flags1 & (MEM_Int|MEM_Real))!=0 ){
        testcase( pIn1->flags & MEM_Int );
        testcase( pIn1->flags & MEM_Real );
        sqlite3VdbeMemStringify(pIn1, encoding, 1);
        testcase( (flags1&MEM_Dyn) != (pIn1->flags&MEM_Dyn) );







>
|
|
|
|
|
>







2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
      }
      break;
    }
  }else{
    /* Neither operand is NULL.  Do a comparison. */
    affinity = pOp->p5 & SQLITE_AFF_MASK;
    if( affinity>=SQLITE_AFF_NUMERIC ){
      if( (flags1 | flags3)&MEM_Str ){
        if( (flags1 & (MEM_Int|MEM_Real|MEM_Str))==MEM_Str ){
          applyNumericAffinity(pIn1,0);
        }
        if( (flags3 & (MEM_Int|MEM_Real|MEM_Str))==MEM_Str ){
          applyNumericAffinity(pIn3,0);
        }
      }
    }else if( affinity==SQLITE_AFF_TEXT ){
      if( (flags1 & MEM_Str)==0 && (flags1 & (MEM_Int|MEM_Real))!=0 ){
        testcase( pIn1->flags & MEM_Int );
        testcase( pIn1->flags & MEM_Real );
        sqlite3VdbeMemStringify(pIn1, encoding, 1);
        testcase( (flags1&MEM_Dyn) != (pIn1->flags&MEM_Dyn) );