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Overview
| Comment: | Remove redundant code from sqlite3GetTempReg(). (CVS 5342) |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
212d05d38c8126f99c028c5ab021b219 |
| User & Date: | danielk1977 2008-07-04 09:41:39 |
Context
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2008-07-04
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| 10:56 | Fix for explicitly inserting a NULL value into the rowid column of a virtual table. (CVS 5343) check-in: a7f3b431 user: danielk1977 tags: trunk | |
| 09:41 | Remove redundant code from sqlite3GetTempReg(). (CVS 5342) check-in: 212d05d3 user: danielk1977 tags: trunk | |
| 09:15 | Remove references to temporary registers from the compiler column-cache when such registers are released. Fix for #3201. (CVS 5341) check-in: f099d677 user: danielk1977 tags: trunk | |
Changes
Changes to src/expr.c.
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** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file contains routines used for analyzing expressions and ** for generating VDBE code that evaluates expressions in SQLite. ** ** $Id: expr.c,v 1.382 2008/07/04 09:15:11 danielk1977 Exp $ */ #include "sqliteInt.h" #include <ctype.h> /* ** Return the 'affinity' of the expression pExpr if any. ** ................................................................................ } } /* ** Allocate or deallocate temporary use registers during code generation. */ int sqlite3GetTempReg(Parse *pParse){ int i, r; if( pParse->nTempReg==0 ){ return ++pParse->nMem; } for(i=0; i<pParse->nTempReg; i++){ r = pParse->aTempReg[i]; if( usedAsColumnCache(pParse, r, r) ) continue; } if( i>=pParse->nTempReg ){ return ++pParse->nMem; } while( i<pParse->nTempReg-1 ){ pParse->aTempReg[i] = pParse->aTempReg[i+1]; } pParse->nTempReg--; return r; } void sqlite3ReleaseTempReg(Parse *pParse, int iReg){ if( iReg && pParse->nTempReg<ArraySize(pParse->aTempReg) ){ sqlite3ExprWritableRegister(pParse, iReg, iReg); pParse->aTempReg[pParse->nTempReg++] = iReg; } } |
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** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file contains routines used for analyzing expressions and ** for generating VDBE code that evaluates expressions in SQLite. ** ** $Id: expr.c,v 1.383 2008/07/04 09:41:39 danielk1977 Exp $ */ #include "sqliteInt.h" #include <ctype.h> /* ** Return the 'affinity' of the expression pExpr if any. ** ................................................................................ } } /* ** Allocate or deallocate temporary use registers during code generation. */ int sqlite3GetTempReg(Parse *pParse){ if( pParse->nTempReg==0 ){ return ++pParse->nMem; } return pParse->aTempReg[--pParse->nTempReg]; } void sqlite3ReleaseTempReg(Parse *pParse, int iReg){ if( iReg && pParse->nTempReg<ArraySize(pParse->aTempReg) ){ sqlite3ExprWritableRegister(pParse, iReg, iReg); pParse->aTempReg[pParse->nTempReg++] = iReg; } } |