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| author | Miguel Sofer <miguel.sofer@gmail.com> | 2005-03-07 20:29:12 (GMT) |
|---|---|---|
| committer | Miguel Sofer <miguel.sofer@gmail.com> | 2005-03-07 20:29:12 (GMT) |
| commit | 7d32638627feb45e86ae5187413f0b5c73c5ec4a (patch) | |
| tree | e75bee92422d090dec595bd1fbd6b9ff4ab51f69 /generic/tclExecute.c | |
| parent | b06bf5d5528889d4da04ae524c75a3c4b318e143 (diff) | |
| download | tcl-7d32638627feb45e86ae5187413f0b5c73c5ec4a.zip tcl-7d32638627feb45e86ae5187413f0b5c73c5ec4a.tar.gz tcl-7d32638627feb45e86ae5187413f0b5c73c5ec4a.tar.bz2 | |
* generic/tclExecute.c: new peephole optimisation for INST_PUSH1;
fixed the peephole opt in INST_POP so that it is not used when
TCL_COMPILE_DEBUG is defined.
Diffstat (limited to 'generic/tclExecute.c')
| -rw-r--r-- | generic/tclExecute.c | 33 |
1 files changed, 27 insertions, 6 deletions
diff --git a/generic/tclExecute.c b/generic/tclExecute.c index b702a1d..f876063 100644 --- a/generic/tclExecute.c +++ b/generic/tclExecute.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: tclExecute.c,v 1.170 2005/02/01 17:27:27 dgp Exp $ + * RCS: @(#) $Id: tclExecute.c,v 1.171 2005/03/07 20:29:12 msofer Exp $ */ #include "tclInt.h" @@ -1342,9 +1342,22 @@ TclExecuteByteCode(interp, codePtr) goto checkForCatch; case INST_PUSH1: - objResultPtr = codePtr->objArrayPtr[TclGetUInt1AtPtr(pc+1)]; - TRACE_WITH_OBJ(("%u => ", TclGetInt1AtPtr(pc+1)), objResultPtr); - NEXT_INST_F(2, 0, 1); +#if !TCL_COMPILE_DEBUG + instPush1Peephole: +#endif + PUSH_OBJECT(codePtr->objArrayPtr[TclGetUInt1AtPtr(pc+1)]); + TRACE_WITH_OBJ(("%u => ", TclGetInt1AtPtr(pc+1)), *(tosPtr-1)); + pc += 2; +#if !TCL_COMPILE_DEBUG + /* + * Runtime peephole optimisation: check if we are pushing again. + */ + + if (*pc == INST_PUSH1) { + goto instPush1Peephole; + } +#endif + NEXT_INST_F(0, 0, 0); case INST_PUSH4: objResultPtr = codePtr->objArrayPtr[TclGetUInt4AtPtr(pc+1)]; @@ -1365,12 +1378,20 @@ TclExecuteByteCode(interp, codePtr) * at the end of most commands. If the next instruction is an * INST_START_CMD, fall through to it. */ + pc++; - if (*pc != INST_START_CMD) { - NEXT_INST_F(0, 0, 0); +#if !TCL_COMPILE_DEBUG + if (*pc == INST_START_CMD) { + goto instStartCmdPeephole; } +#endif + NEXT_INST_F(0, 0, 0); + case INST_START_CMD: +#if !TCL_COMPILE_DEBUG + instStartCmdPeephole: +#endif /* * Remark that if the interpreter is marked for deletion * its compileEpoch is modified, so that the epoch |