Small performance optimization associated with shared cache in the

byte-code engine.

FossilOrigin-Name: 3181331c1c0259d5cd274dcb33faba930dae51b1f0fe51e8a0318d9c564b94f9

manifest

@@ -1,5 +1,5 @@
-C Small\sperformance\soptimization\son\sthe\sOP_Insert\sopcode.
-D 2022-12-22T17:36:02.174
+C Small\sperformance\soptimization\sassociated\swith\sshared\scache\sin\sthe\s\nbyte-code\sengine.
+D 2022-12-22T18:35:21.964
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -717,7 +717,7 @@ F src/upsert.c 5303dc6c518fa7d4b280ec65170f465c7a70b7ac2b22491598f6d0b4875b3145
 F src/utf.c ee39565f0843775cc2c81135751ddd93eceb91a673ea2c57f61c76f288b041a0
 F src/util.c 313f3154e2b85a447326f5dd15de8d31a4df6ab0c3579bd58f426ff634ec9050
 F src/vacuum.c 84ce7f01f8a7a08748e107a441db83bcec13970190ddcb0c9ff522adbc1c23fd
-F src/vdbe.c 03185a27a021df4209dcca057881d56707bdaa926e6c63d65ad6c4ff57f53875
+F src/vdbe.c 2cb6f6b38b2cc50035d491b367efd17cde7b9fa516d034770070cee22b15238d
 F src/vdbe.h 73b904a6b3bb27f308c6cc287a5751ebc7f1f89456be0ed068a12b92844c6e8c
 F src/vdbeInt.h 8651e4c4e04d1860d0bdcf330cb8294e3778a9d4222be30ce4c490d9220af783
 F src/vdbeapi.c df3f73a4d0a487f2068e3c84776cd6e3fba5ae80ff612659dcfda4307686420b
@@ -2067,8 +2067,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 7d7780c350f3239f9c9feb91924a01a4eba31b88060946c766719c9d50c16bcd
-R a79a9647bde3a72723a187f1de5c75d2
+P 781fdcb9ce85aa2844ef8c00cf908f1a87eeff80dadaf73a71f88b4279260e57
+R 6ad8f3aec031a59c06fb544af5840d29
 U drh
-Z caedf858b975dd266664ead43db463b2
+Z 6be85e967e4dcdafadc5fb2522e97361
 # Remove this line to create a well-formed Fossil manifest.

manifest.uuid

@@ -1 +1 @@
-781fdcb9ce85aa2844ef8c00cf908f1a87eeff80dadaf73a71f88b4279260e57
+3181331c1c0259d5cd274dcb33faba930dae51b1f0fe51e8a0318d9c564b94f9

src/vdbe.c

@@ -734,7 +734,7 @@ int sqlite3VdbeExec(
   /*** INSERT STACK UNION HERE ***/
 
   assert( p->eVdbeState==VDBE_RUN_STATE );  /* sqlite3_step() verifies this */
-  sqlite3VdbeEnter(p);
+  if( !DbMaskAllZero(p->lockMask) )sqlite3VdbeEnter(p);
 #ifndef SQLITE_OMIT_PROGRESS_CALLBACK
   if( db->xProgress ){
     u32 iPrior = p->aCounter[SQLITE_STMTSTATUS_VM_STEP];
@@ -8830,7 +8830,7 @@ vdbe_return:
   }
 #endif
   p->aCounter[SQLITE_STMTSTATUS_VM_STEP] += (int)nVmStep;
-  sqlite3VdbeLeave(p);
+  if( !DbMaskAllZero(p->lockMask) ) sqlite3VdbeLeave(p);
   assert( rc!=SQLITE_OK || nExtraDelete==0 
        || sqlite3_strlike("DELETE%",p->zSql,0)!=0 
   );