diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/expr.c | 12 | ||||
| -rw-r--r-- | src/vdbe.c | 2 | ||||
| -rw-r--r-- | src/vdbeaux.c | 23 |
3 files changed, 33 insertions, 4 deletions
diff --git a/src/expr.c b/src/expr.c index 81eb00c96..8ee73acb7 100644 --- a/src/expr.c +++ b/src/expr.c @@ -3428,7 +3428,17 @@ int sqlite3ExprCodeExprList( }else{ int inReg = sqlite3ExprCodeTarget(pParse, pExpr, target+i); if( inReg!=target+i ){ - sqlite3VdbeAddOp2(pParse->pVdbe, copyOp, inReg, target+i); + VdbeOp *pOp; + Vdbe *v = pParse->pVdbe; + if( copyOp==OP_Copy + && (pOp=sqlite3VdbeGetOp(v, -1))->opcode==OP_Copy + && pOp->p1+pOp->p3+1==inReg + && pOp->p2+pOp->p3+1==target+i + ){ + pOp->p3++; + }else{ + sqlite3VdbeAddOp2(v, copyOp, inReg, target+i); + } } } } diff --git a/src/vdbe.c b/src/vdbe.c index 336112093..bbc6d3f7f 100644 --- a/src/vdbe.c +++ b/src/vdbe.c @@ -1111,7 +1111,7 @@ case OP_Move: { } /* Opcode: Copy P1 P2 P3 * * -** Synopsis: r[P2@P3]=r[P1@P3] +** Synopsis: r[P2@P3+1]=r[P1@P3+1] ** ** Make a copy of registers P1..P1+P3 into registers P2..P2+P3. ** diff --git a/src/vdbeaux.c b/src/vdbeaux.c index 068059e59..8e95de70c 100644 --- a/src/vdbeaux.c +++ b/src/vdbeaux.c @@ -885,7 +885,17 @@ static int translateP(char c, const Op *pOp){ } /* -** Compute a string for the "comment" field of a VDBE opcode listing +** Compute a string for the "comment" field of a VDBE opcode listing. +** +** The Synopsis: field in comments in the vdbe.c source file gets converted +** to an extra string that is appended to the sqlite3OpcodeName(). In the +** absence of other comments, this synopsis becomes the comment on the opcode. +** Some translation occurs: +** +** "PX" -> "r[X]" +** "PX@PY" -> "r[X..X+Y-1]" or "r[x]" if y is 0 or 1 +** "PX@PY+1" -> "r[X..X+Y]" or "r[x]" if y is 0 +** "PY..PY" -> "r[X..Y]" or "r[x]" if y<=x */ static int displayComment( const Op *pOp, /* The opcode to be commented */ @@ -919,7 +929,13 @@ static int displayComment( ii += 3; jj += sqlite3Strlen30(zTemp+jj); v2 = translateP(zSynopsis[ii], pOp); - if( v2>1 ) sqlite3_snprintf(nTemp-jj, zTemp+jj, "..%d", v1+v2-1); + if( strncmp(zSynopsis+ii+1,"+1",2)==0 ){ + ii += 2; + v2++; + } + if( v2>1 ){ + sqlite3_snprintf(nTemp-jj, zTemp+jj, "..%d", v1+v2-1); + } }else if( strncmp(zSynopsis+ii+1, "..P3", 4)==0 && pOp->p3==0 ){ ii += 4; } @@ -1151,6 +1167,9 @@ void sqlite3VdbePrintOp(FILE *pOut, int pc, Op *pOp){ #else zCom[0] = 0 #endif + /* NB: The sqlite3OpcodeName() function is implemented by code created + ** by the mkopcodeh.awk and mkopcodec.awk scripts which extract the + ** information from the vdbe.c source text */ fprintf(pOut, zFormat1, pc, sqlite3OpcodeName(pOp->opcode), pOp->p1, pOp->p2, pOp->p3, zP4, pOp->p5, zCom |