From: drh <drh@noemail.net>
Date: Wed, 17 Jun 2015 02:11:46 +0000 (+0000)
Subject: Make getCellInfo() a real function instead of a macro, for a size reduction
X-Git-Tag: version-3.8.11~159
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c5b41ac8ee9f322e19d6a781763da19530fbbe63;p=thirdparty%2Fsqlite.git

Make getCellInfo() a real function instead of a macro, for a size reduction
and a 0.2% performance gain.

FossilOrigin-Name: 55c393ea14197ae5fa56ebca7a47e7d980511fa7
---

diff --git a/manifest b/manifest
index 573ebff619..fc919c6ac0 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Optimizations\sto\stwo\sVDBE\saccessory\sroutines\sfor\sa\s0.2%\sperformance\sincrease.
-D 2015-06-17T01:31:28.018
+C Make\sgetCellInfo()\sa\sreal\sfunction\sinstead\sof\sa\smacro,\sfor\sa\ssize\sreduction\nand\sa\s0.2%\sperformance\sgain.
+D 2015-06-17T02:11:46.631
 F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
 F Makefile.in 1063c58075b7400d93326b0eb332b48a54f53025
 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -192,7 +192,7 @@ F src/auth.c b56c78ebe40a2110fd361379f7e8162d23f92240
 F src/backup.c ff743689c4d6c5cb55ad42ed9d174b2b3e71f1e3
 F src/bitvec.c 5eb7958c3bf65210211cbcfc44eff86d0ded7c9d
 F src/btmutex.c 45a968cc85afed9b5e6cf55bf1f42f8d18107f79
-F src/btree.c e557af3120ac3e5cea9680ca12688cf26b0222bc
+F src/btree.c 02caf39192ed1f5c7157a1aac0b2ff23389233de
 F src/btree.h 969adc948e89e449220ff0ff724c94bb2a52e9f1
 F src/btreeInt.h 973a22a6fd61350b454ad614832b1f0a5e25a1e4
 F src/build.c b3f15255d5b16e42dafeaa638fd4f8a47c94ed70
@@ -1286,7 +1286,7 @@ F tool/vdbe_profile.tcl 67746953071a9f8f2f668b73fe899074e2c6d8c1
 F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
 F tool/warnings.sh 48bd54594752d5be3337f12c72f28d2080cb630b
 F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
-P 400e025e7c61efab71b891743c07a0862e5bb934
-R d6ec7bd1e825895971b1bb96fc6c1218
+P 66d033b9c9a8c16b9a342be0b325bd85b8487c03
+R b009f7bdded8eda946c7f086260f521c
 U drh
-Z dd5ab0f28ac99d3509e4690cbccf7594
+Z e2dd593dbc0c1057f97a55b340af2663
diff --git a/manifest.uuid b/manifest.uuid
index 8870f66ad6..ea7a1a60de 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-66d033b9c9a8c16b9a342be0b325bd85b8487c03
\ No newline at end of file
+55c393ea14197ae5fa56ebca7a47e7d980511fa7
\ No newline at end of file
diff --git a/src/btree.c b/src/btree.c
index edd0f611d2..eab5b98426 100644
--- a/src/btree.c
+++ b/src/btree.c
@@ -3985,13 +3985,6 @@ int sqlite3BtreeCloseCursor(BtCursor *pCur){
 **
 ** BtCursor.info is a cache of the information in the current cell.
 ** Using this cache reduces the number of calls to btreeParseCell().
-**
-** 2007-06-25:  There is a bug in some versions of MSVC that cause the
-** compiler to crash when getCellInfo() is implemented as a macro.
-** But there is a measureable speed advantage to using the macro on gcc
-** (when less compiler optimizations like -Os or -O0 are used and the
-** compiler is not doing aggressive inlining.)  So we use a real function
-** for MSVC and a macro for everything else.  Ticket #2457.
 */
 #ifndef NDEBUG
   static void assertCellInfo(BtCursor *pCur){
@@ -4004,28 +3997,15 @@ int sqlite3BtreeCloseCursor(BtCursor *pCur){
 #else
   #define assertCellInfo(x)
 #endif
-#ifdef _MSC_VER
-  /* Use a real function in MSVC to work around bugs in that compiler. */
-  static void getCellInfo(BtCursor *pCur){
-    if( pCur->info.nSize==0 ){
-      int iPage = pCur->iPage;
-      btreeParseCell(pCur->apPage[iPage],pCur->aiIdx[iPage],&pCur->info);
-      pCur->curFlags |= BTCF_ValidNKey;
-    }else{
-      assertCellInfo(pCur);
-    }
-  }
-#else /* if not _MSC_VER */
-  /* Use a macro in all other compilers so that the function is inlined */
-#define getCellInfo(pCur)                                                      \
-  if( pCur->info.nSize==0 ){                                                   \
-    int iPage = pCur->iPage;                                                   \
-    btreeParseCell(pCur->apPage[iPage],pCur->aiIdx[iPage],&pCur->info);        \
-    pCur->curFlags |= BTCF_ValidNKey;                                          \
-  }else{                                                                       \
-    assertCellInfo(pCur);                                                      \
+static SQLITE_NOINLINE void getCellInfo(BtCursor *pCur){
+  if( pCur->info.nSize==0 ){
+    int iPage = pCur->iPage;
+    pCur->curFlags |= BTCF_ValidNKey;
+    btreeParseCell(pCur->apPage[iPage],pCur->aiIdx[iPage],&pCur->info);
+  }else{
+    assertCellInfo(pCur);
   }
-#endif /* _MSC_VER */
+}
 
 #ifndef NDEBUG  /* The next routine used only within assert() statements */
 /*