Performance optimization in OP_Column: decode serial types 0 through 6, 8, and 9 (NULL and all integer widths) inline in a switch, avoiding the call and dispatch overhead of sqlite3VdbeSerialGet(). The wide-integer cases 5 and 6 add bulk, but omitting them would leave those types paying the switch miss plus the original call. Other serial types are decoded as before.

FossilOrigin-Name: cf829cc21ba3e00e9201f02a8feb2fe60f937315f1b267457717e8cd824f8e1d

manifest

@@ -1,5 +1,5 @@
-C The\ssorter\senhancement\sat\s[bdc841de10fef65b]\scontains\sa\sbug\swhere\sit\nmight\ssort\s64-bit\sintegers\sin\sthe\swrong\sorder\sdue\sto\sthe\slimited\nprecision\sof\sdouble.\s\sFixed\shere.
-D 2026-08-04T20:40:10.440
+C Performance\soptimization\sin\sOP_Column:\sdecode\sserial\stypes\s0\sthrough\s6,\s8,\sand\s9\s(NULL\sand\sall\sinteger\swidths)\sinline\sin\sa\sswitch,\savoiding\sthe\scall\sand\sdispatch\soverhead\sof\ssqlite3VdbeSerialGet().\sThe\swide-integer\scases\s5\sand\s6\sadd\sbulk,\sbut\somitting\sthem\swould\sleave\sthose\stypes\spaying\sthe\sswitch\smiss\splus\sthe\soriginal\scall.\sOther\sserial\stypes\sare\sdecoded\sas\sbefore.
+D 2026-08-07T00:00:05.627
 F .fossil-settings/binary-glob 61195414528fb3ea9693577e1980230d78a1f8b0a54c78cf1b9b24d0a409ed6a x
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
@@ -809,7 +809,7 @@ F src/upsert.c dd9f0fcccbfb4f20e1026a21a7254ba3f2c08e9cfa92affaff5b5ec3b00ea549
 F src/utf.c 7267c3fb9e2467020507601af3354c2446c61f444387e094c779dccd5ca62165
 F src/util.c fcab5d997364c657e973e2bd3b9d2181aeb0926be0c028f20dfd4445894af3b4
 F src/vacuum.c d3d35d8ae893d419ade5fa196d761a83bddcbb62137a1a157ae751ef38b26e82
-F src/vdbe.c 0649187bbbe1990e7d32f4737d59cacf554de34b30a3121279830f3e0d3859ff
+F src/vdbe.c 27338bd31556b944154a4fa59967d97e7fb43852249dd34197544945ac092899
 F src/vdbe.h 70e862ac8a11b590f8c1eaac17a0078429d42bc4ea3f757a9af0f451dd966a71
 F src/vdbeInt.h c31ba4dc8d280c2b1dc89c6fcee68f2555e3813ab34279552c20b964c0e338b1
 F src/vdbeapi.c 6ad0c841b6cb87de068f71787f385149d794e8830176bf72d09a36b9f655ac5b
@@ -2218,8 +2218,11 @@ F tool/warnings-clang.sh bbf6a1e685e534c92ec2bfba5b1745f34fb6f0bc2a362850723a9ee
 F tool/warnings.sh a554d13f6e5cf3760f041b87939e3d616ec6961859c3245e8ef701d1eafc2ca2
 F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
 F tool/winmain.c 00c8fb88e365c9017db14c73d3c78af62194d9644feaf60e220ab0f411f3604c
-P bdc841de10fef65b627deb8b770702c976174a66af847c96ebecf24d91798744
-R 0db8bad880544fadd75c136d6d89db37
-U drh
-Z c0254d132a18aeae6d54aba80ce46af2
+P 6bdfff7ddb63d0b4f28f6c174a36e81486a652056a4e21644378a22feda780fd
+R 85ac5a0e76583d1cebd71a1fc73dc3a8
+T *branch * opcol-inline-ints
+T *sym-opcol-inline-ints *
+T -sym-trunk *
+U jeffchen
+Z 95c84f6166e2c42d3da56108de95ab36
 # Remove this line to create a well-formed Fossil manifest.

manifest.tags

@@ -1,2 +1,2 @@
-branch trunk
-tag trunk
+branch opcol-inline-ints
+tag opcol-inline-ints

manifest.uuid

@@ -1 +1 @@
-6bdfff7ddb63d0b4f28f6c174a36e81486a652056a4e21644378a22feda780fd
+cf829cc21ba3e00e9201f02a8feb2fe60f937315f1b267457717e8cd824f8e1d

src/vdbe.c

@@ -3250,7 +3250,53 @@ op_column_restart:
     ** page - where the content is not on an overflow page */
     zData = pC->aRow + aOffset[p2];
     if( t<12 ){
-      sqlite3VdbeSerialGet(zData, t, pDest);
+      switch( t ){
+        case 0:
+          pDest->flags = MEM_Null;
+          break;
+        case 1:
+          pDest->u.i = (i8)zData[0];
+          pDest->flags = MEM_Int;
+          testcase( pDest->u.i<0 );
+          break;
+        case 2:
+          pDest->u.i = 256*(i8)zData[0] | zData[1];
+          pDest->flags = MEM_Int;
+          testcase( pDest->u.i<0 );
+          break;
+        case 3:
+          pDest->u.i = 65536*(i8)zData[0] | (zData[1]<<8) | zData[2];
+          pDest->flags = MEM_Int;
+          testcase( pDest->u.i<0 );
+          break;
+        case 4:
+          pDest->u.i = 16777216*(i8)zData[0] | (zData[1]<<16)
+                         | (zData[2]<<8) | zData[3];
+          pDest->flags = MEM_Int;
+          testcase( pDest->u.i<0 );
+          break;
+        case 5:
+          pDest->u.i = (((u32)zData[2]<<24)|(zData[3]<<16)|(zData[4]<<8)|zData[5])
+                         + (((i64)1)<<32)*(256*(i8)zData[0] | zData[1]);
+          pDest->flags = MEM_Int;
+          testcase( pDest->u.i<0 );
+          break;
+        case 6: {
+          u64 x = ((u64)(((u32)zData[0]<<24)|(zData[1]<<16)|(zData[2]<<8)|zData[3])<<32)
+                    + (((u32)zData[4]<<24)|(zData[5]<<16)|(zData[6]<<8)|zData[7]);
+          memcpy(&pDest->u.i, &x, sizeof(x));
+          pDest->flags = MEM_Int;
+          testcase( pDest->u.i<0 );
+          break;
+        }
+        case 8:
+        case 9:
+          pDest->u.i = t-8;
+          pDest->flags = MEM_Int;
+          break;
+        default:
+          sqlite3VdbeSerialGet(zData, t, pDest);
+      }
     }else{
       /* If the column value is a string, we need a persistent value, not
       ** a MEM_Ephem value.  This branch is a fast short-cut that is equivalent