Handle the 4-byte integer case in the stackless routine.

FossilOrigin-Name: 3f55484e81000c75e231f5580632a68e782ded4f

manifest

@@ -1,5 +1,5 @@
-C Get\sthe\ssqlite3VdbeSerialGet()\sroutine\sto\srun\sfaster\sby\savoiding\sthe\suse\nof\slocal\svariables.
-D 2014-08-22T14:34:05.936
+C Handle\sthe\s4-byte\sinteger\scase\sin\sthe\sstackless\sroutine.
+D 2014-08-22T14:56:13.720
 F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
 F Makefile.in 5eb79e334a5de69c87740edd56af6527dd219308
 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -288,7 +288,7 @@ F src/vdbe.c f7f4066e4d6e3858878d76ce9288ea603e12ddf6
 F src/vdbe.h c63fad052c9e7388d551e556e119c0bcf6bebdf8
 F src/vdbeInt.h f5513f2b5ac1e2c5128996c7ea23add256a301df
 F src/vdbeapi.c 7858d7e7cd23267d3fbca18e3a28cce8e0d162a8
-F src/vdbeaux.c f83d5c265aea19d2e49ba018beaf99acff934020
+F src/vdbeaux.c d0b20a85d1ab8c951e5c8b2400a45252d6d2750c
 F src/vdbeblob.c 9205ce9d3b064d9600f8418a897fc88b5687d9ac
 F src/vdbemem.c d90a1e8acf8b63dc9d14cbbea12bfec6cec31394
 F src/vdbesort.c f7f5563bf7d4695ca8f3203f3bf9de96d04ed0b3
@@ -1188,10 +1188,7 @@ F tool/vdbe_profile.tcl 67746953071a9f8f2f668b73fe899074e2c6d8c1
 F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
 F tool/warnings.sh 0abfd78ceb09b7f7c27c688c8e3fe93268a13b32
 F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
-P 750bb0a0960606ab24037e0992e9f7a17524cc3e
-R 6bc6a7681a89a137c23142249db6cf86
-T *branch * experimental
-T *sym-experimental *
-T -sym-trunk *
+P 8267d82174099e548a4f78d06af0c6324c89b83d
+R 3e2300d1a615c65baf7081c06688a5fd
 U drh
-Z 612ca7a9b67c6d8d8dbe2b7affb6d3eb
+Z 9f4fad73eafc2d2adf27281640f7d1a1

manifest.uuid

@@ -1 +1 @@
-8267d82174099e548a4f78d06af0c6324c89b83d
+3f55484e81000c75e231f5580632a68e782ded4f

src/vdbeaux.c

@@ -2961,6 +2961,7 @@ u32 sqlite3VdbeSerialPut(u8 *buf, Mem *pMem, u32 serial_type){
 #define TWO_BYTE_INT(x)    (256*(i8)((x)[0])|(x)[1])
 #define THREE_BYTE_INT(x)  (65536*(i8)((x)[0])|((x)[1]<<8)|(x)[2])
 #define FOUR_BYTE_UINT(x)  (((u32)(x)[0]<<24)|((x)[1]<<16)|((x)[2]<<8)|(x)[3])
+#define FOUR_BYTE_INT(x) (16777216*(i8)((x)[0])|((x)[1]<<16)|((x)[2]<<8)|(x)[3])
 
 /*
 ** Deserialize the data blob pointed to by buf as serial type serial_type
@@ -2976,15 +2977,9 @@ static u32 SQLITE_NOINLINE serialGet(
   u32 serial_type,              /* Serial type to deserialize */
   Mem *pMem                     /* Memory cell to write value into */
 ){
-  u64 x;
-  u32 y = FOUR_BYTE_UINT(buf);
-  if( serial_type==4 ){
-    pMem->u.i = (i64)*(int*)&y;
-    pMem->flags = MEM_Int;
-    testcase( pMem->u.i<0 );
-    return 4;
-  }
-  x = (((u64)y)<<32)|FOUR_BYTE_UINT(buf+4);
+  u64 x = FOUR_BYTE_UINT(buf);
+  u32 y = FOUR_BYTE_UINT(buf+4);
+  x = (x<<32) + y;
   if( serial_type==6 ){
     pMem->u.i = *(i64*)&x;
     pMem->flags = MEM_Int;
@@ -3039,18 +3034,22 @@ u32 sqlite3VdbeSerialGet(
       testcase( pMem->u.i<0 );
       return 3;
     }
+    case 4: { /* 4-byte signed integer */
+      pMem->u.i = FOUR_BYTE_INT(buf);
+      pMem->flags = MEM_Int;
+      testcase( pMem->u.i<0 );
+      return 4;
+    }
     case 5: { /* 6-byte signed integer */
       pMem->u.i = FOUR_BYTE_UINT(buf+2) + (((i64)1)<<32)*TWO_BYTE_INT(buf);
       pMem->flags = MEM_Int;
       testcase( pMem->u.i<0 );
       return 6;
     }
-    case 4:   /* 4-byte signed integer */
     case 6:   /* 8-byte signed integer */
     case 7: { /* IEEE floating point */
-      /* These three cases require local variables, so do them in a 
-      ** separate routine to avoid having to move the frame pointer in
-      ** the common case */
+      /* These use local variables, so do them in a separate routine
+      ** to avoid having to move the frame pointer in the common case */
       return serialGet(buf,serial_type,pMem);
     }
     case 8:    /* Integer 0 */