diff options
| author | dkf <donal.k.fellows@manchester.ac.uk> | 2007-01-19 14:06:09 (GMT) |
|---|---|---|
| committer | dkf <donal.k.fellows@manchester.ac.uk> | 2007-01-19 14:06:09 (GMT) |
| commit | b1e9c1d4b650fea5e60a10b7beaad0c893848982 (patch) | |
| tree | 1d6d0da8a00a3f7253a77e3051f23d247d1fa15d /generic/tclCompile.c | |
| parent | 04752af27c73732b84dc81b8f2284d5ca83e3962 (diff) | |
| download | tcl-b1e9c1d4b650fea5e60a10b7beaad0c893848982.zip tcl-b1e9c1d4b650fea5e60a10b7beaad0c893848982.tar.gz tcl-b1e9c1d4b650fea5e60a10b7beaad0c893848982.tar.bz2 | |
More efficient issuing of INST_START_CMD instructions. See ChangeLog for discussion
Diffstat (limited to 'generic/tclCompile.c')
| -rw-r--r-- | generic/tclCompile.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/generic/tclCompile.c b/generic/tclCompile.c index 0dcfb32..2964e46 100644 --- a/generic/tclCompile.c +++ b/generic/tclCompile.c @@ -11,7 +11,7 @@ * See the file "license.terms" for information on usage and redistribution of * this file, and for a DISCLAIMER OF ALL WARRANTIES. * - * RCS: @(#) $Id: tclCompile.c,v 1.105 2007/01/18 23:17:07 dkf Exp $ + * RCS: @(#) $Id: tclCompile.c,v 1.106 2007/01/19 14:06:09 dkf Exp $ */ #include "tclInt.h" @@ -854,6 +854,7 @@ TclInitCompileEnv( envPtr->cmdMapPtr = envPtr->staticCmdMapSpace; envPtr->cmdMapEnd = COMPILEENV_INIT_CMD_MAP_SIZE; envPtr->mallocedCmdMap = 0; + envPtr->atCmdStart = 0; /* * TIP #280: Set up the extended command location information, based on @@ -1124,7 +1125,7 @@ TclCompileScript( Command *cmdPtr; Tcl_Token *tokenPtr; int bytesLeft, isFirstCmd, gotParse, wordIdx, currCmdIndex; - int commandLength, objIndex, code; + int commandLength, objIndex; Tcl_DString ds; /* TIP #280 */ ExtCmdLoc *eclPtr = envPtr->extCmdMapPtr; @@ -1468,6 +1469,7 @@ TclCompileScript( int savedNumCmds = envPtr->numCommands; unsigned int savedCodeNext = envPtr->codeNext - envPtr->codeStart; + int update = 0, code; /* * Mark the start of the command; the proper bytecode @@ -1479,14 +1481,15 @@ TclCompileScript( * (savedCodeNext == 0) */ - if (savedCodeNext != 0) { + if (savedCodeNext != 0 && !envPtr->atCmdStart) { TclEmitInstInt4(INST_START_CMD, 0, envPtr); + update = 1; } code = (cmdPtr->compileProc)(interp, &parse, envPtr); if (code == TCL_OK) { - if (savedCodeNext != 0) { + if (update) { /* * Fix the bytecode length. */ |