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-rw-r--r--generic/tclCompCmds.c81
-rw-r--r--generic/tclCompCmdsSZ.c4
-rw-r--r--generic/tclCompile.c96
-rw-r--r--generic/tclCompile.h6
4 files changed, 168 insertions, 19 deletions
diff --git a/generic/tclCompCmds.c b/generic/tclCompCmds.c
index 7046e54..1f99a22 100644
--- a/generic/tclCompCmds.c
+++ b/generic/tclCompCmds.c
@@ -480,11 +480,45 @@ TclCompileBreakCmd(
* compiled. */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
+ int i, exnIdx;
+ ExceptionRange *rangePtr;
+
if (parsePtr->numWords != 1) {
return TCL_ERROR;
}
/*
+ * Find the innermost exception range that contains this command. Relies
+ * on the fact that the range has a numCodeBytes = -1 when it is being
+ * populated and that inner ranges come after outer ranges.
+ */
+
+ exnIdx = -1;
+ for (i=0 ; i<envPtr->exceptArrayNext ; i++) {
+ rangePtr = &envPtr->exceptArrayPtr[i];
+ if (envPtr->codeStart+rangePtr->codeOffset <= envPtr->codeNext
+ && rangePtr->numCodeBytes == -1) {
+ exnIdx = i;
+ }
+ }
+ if (exnIdx != -1) {
+ rangePtr = &envPtr->exceptArrayPtr[exnIdx];
+ if (rangePtr->type == LOOP_EXCEPTION_RANGE) {
+ int toPop = envPtr->currStackDepth -
+ envPtr->exnStackDepthArrayPtr[exnIdx];
+
+ /*
+ * Pop off the extra stack frames.
+ */
+
+ while (toPop > 0) {
+ TclEmitOpcode(INST_POP, envPtr);
+ toPop--;
+ }
+ }
+ }
+
+ /*
* Emit a break instruction.
*/
@@ -790,6 +824,9 @@ TclCompileContinueCmd(
* compiled. */
CompileEnv *envPtr) /* Holds resulting instructions. */
{
+ int i, exnIdx;
+ ExceptionRange *rangePtr;
+
/*
* There should be no argument after the "continue".
*/
@@ -799,6 +836,50 @@ TclCompileContinueCmd(
}
/*
+ * See if we can find a valid continueOffset (i.e., not -1) in the
+ * innermost containing exception range. Relies on the fact that the range
+ * has a numCodeBytes = -1 when it is being populated and that inner
+ * ranges come after outer ranges.
+ */
+
+ exnIdx = -1;
+ for (i=0 ; i<envPtr->exceptArrayNext ; i++) {
+ rangePtr = &envPtr->exceptArrayPtr[i];
+ if (envPtr->codeStart+rangePtr->codeOffset <= envPtr->codeNext
+ && rangePtr->numCodeBytes == -1) {
+ exnIdx = i;
+ }
+ }
+ if (exnIdx >= 0) {
+ rangePtr = &envPtr->exceptArrayPtr[exnIdx];
+ if (rangePtr->type == LOOP_EXCEPTION_RANGE) {
+ int toPop = envPtr->currStackDepth -
+ envPtr->exnStackDepthArrayPtr[exnIdx];
+
+ /*
+ * Pop off the extra stack frames.
+ */
+
+ while (toPop > 0) {
+ TclEmitOpcode(INST_POP, envPtr);
+ toPop--;
+ }
+ }
+ if (rangePtr->type == LOOP_EXCEPTION_RANGE
+ && rangePtr->continueOffset != -1) {
+ int offset = (rangePtr->continueOffset - CurrentOffset(envPtr));
+
+ /*
+ * Found the target! No need for a nasty INST_CONTINUE here.
+ */
+
+ TclEmitInstInt4(INST_JUMP4, offset, envPtr);
+ PushStringLiteral(envPtr, ""); /* Evil hack! */
+ return TCL_OK;
+ }
+ }
+
+ /*
* Emit a continue instruction.
*/
diff --git a/generic/tclCompCmdsSZ.c b/generic/tclCompCmdsSZ.c
index ed4d962..4f4286e 100644
--- a/generic/tclCompCmdsSZ.c
+++ b/generic/tclCompCmdsSZ.c
@@ -2869,6 +2869,10 @@ TclCompileWhileCmd(
SetLineInformation(2);
bodyCodeOffset = ExceptionRangeStarts(envPtr, range);
+ if (!loopMayEnd) {
+ envPtr->exceptArrayPtr[range].continueOffset = testCodeOffset;
+ envPtr->exceptArrayPtr[range].codeOffset = bodyCodeOffset;
+ }
CompileBody(envPtr, bodyTokenPtr, interp);
ExceptionRangeEnds(envPtr, range);
envPtr->currStackDepth = savedStackDepth + 1;
diff --git a/generic/tclCompile.c b/generic/tclCompile.c
index 039a694..631ff58 100644
--- a/generic/tclCompile.c
+++ b/generic/tclCompile.c
@@ -562,7 +562,7 @@ static Command * FindCompiledCommandFromToken(Tcl_Interp *interp,
static void FreeByteCodeInternalRep(Tcl_Obj *objPtr);
static void FreeSubstCodeInternalRep(Tcl_Obj *objPtr);
static int GetCmdLocEncodingSize(CompileEnv *envPtr);
-static int IsCompactibleCompileEnv(Tcl_Interp *interp,
+/* static */ int IsCompactibleCompileEnv(Tcl_Interp *interp,
CompileEnv *envPtr);
static void PeepholeOptimize(CompileEnv *envPtr);
#ifdef TCL_COMPILE_STATS
@@ -745,7 +745,9 @@ TclSetByteCodeFromAny(
}
compEnv.atCmdStart = 2; /* The disabling magic. */
TclCompileScript(interp, stringPtr, length, &compEnv);
+ assert (compEnv.atCmdStart > 1);
TclEmitOpcode(INST_DONE, &compEnv);
+ assert (compEnv.atCmdStart > 1);
}
/*
@@ -1034,7 +1036,7 @@ TclCleanupByteCode(
* ---------------------------------------------------------------------
*/
-static int
+/* static */ int
IsCompactibleCompileEnv(
Tcl_Interp *interp,
CompileEnv *envPtr)
@@ -1084,9 +1086,11 @@ IsCompactibleCompileEnv(
case INST_NSUPVAR:
case INST_VARIABLE:
return 0;
+ default:
+ size = tclInstructionTable[*pc].numBytes;
+ assert (size > 0);
+ break;
}
- size = tclInstructionTable[*pc].numBytes;
- assert (size > 0);
}
return 1;
@@ -1145,31 +1149,39 @@ PeepholeOptimize(
(void) Tcl_CreateHashEntry(&targets, (void *) target, &isNew);
}
break;
+ case INST_START_CMD:
+ assert (envPtr->atCmdStart < 2);
}
}
/*
- * Replace PUSH/POP sequences (when non-hazardous) with NOPs.
+ * Replace PUSH/POP sequences (when non-hazardous) with NOPs. Also replace
+ * PUSH empty/CONCAT and TRY_CVT_NUMERIC (when followed by an operation
+ * that guarantees the check for arithmeticity).
*/
(void) Tcl_CreateHashEntry(&targets, (void *) pc, &isNew);
for (pc = envPtr->codeStart ; pc < envPtr->codeNext ; pc += size) {
- int blank = 0, i;
+ int blank = 0, i, inst;
size = tclInstructionTable[*pc].numBytes;
prev2 = prev1;
prev1 = pc;
+ while (*(pc+size) == INST_NOP) {
+ if (Tcl_FindHashEntry(&targets, (void *) (pc + size))) {
+ break;
+ }
+ size += tclInstructionTable[INST_NOP].numBytes;
+ }
if (Tcl_FindHashEntry(&targets, (void *) (pc + size))) {
continue;
}
+ inst = *(pc + size);
switch (*pc) {
case INST_PUSH1:
- while (*(pc+size) == INST_NOP) {
- size++;
- }
- if (*(pc+size) == INST_POP) {
- blank = size + 1;
- } else if (*(pc+size) == INST_CONCAT1
+ if (inst == INST_POP) {
+ blank = size + tclInstructionTable[inst].numBytes;
+ } else if (inst == INST_CONCAT1
&& TclGetUInt1AtPtr(pc + size + 1) == 2) {
Tcl_Obj *litPtr = TclFetchLiteral(envPtr,
TclGetUInt1AtPtr(pc + 1));
@@ -1177,17 +1189,14 @@ PeepholeOptimize(
(void) Tcl_GetStringFromObj(litPtr, &numBytes);
if (numBytes == 0) {
- blank = size + 2;
+ blank = size + tclInstructionTable[inst].numBytes;
}
}
break;
case INST_PUSH4:
- while (*(pc+size) == INST_NOP) {
- size++;
- }
- if (*(pc+size) == INST_POP) {
+ if (inst == INST_POP) {
blank = size + 1;
- } else if (*(pc+size) == INST_CONCAT1
+ } else if (inst == INST_CONCAT1
&& TclGetUInt1AtPtr(pc + size + 1) == 2) {
Tcl_Obj *litPtr = TclFetchLiteral(envPtr,
TclGetUInt4AtPtr(pc + 1));
@@ -1195,10 +1204,49 @@ PeepholeOptimize(
(void) Tcl_GetStringFromObj(litPtr, &numBytes);
if (numBytes == 0) {
- blank = size + 2;
+ blank = size + tclInstructionTable[inst].numBytes;
}
}
break;
+ case INST_TRY_CVT_TO_NUMERIC:
+ switch (inst) {
+ case INST_JUMP_TRUE1:
+ case INST_JUMP_TRUE4:
+ case INST_JUMP_FALSE1:
+ case INST_JUMP_FALSE4:
+ case INST_INCR_SCALAR1:
+ case INST_INCR_ARRAY1:
+ case INST_INCR_ARRAY_STK:
+ case INST_INCR_SCALAR_STK:
+ case INST_INCR_STK:
+ case INST_LOR:
+ case INST_LAND:
+ case INST_EQ:
+ case INST_NEQ:
+ case INST_LT:
+ case INST_LE:
+ case INST_GT:
+ case INST_GE:
+ case INST_MOD:
+ case INST_LSHIFT:
+ case INST_RSHIFT:
+ case INST_BITOR:
+ case INST_BITXOR:
+ case INST_BITAND:
+ case INST_EXPON:
+ case INST_ADD:
+ case INST_SUB:
+ case INST_DIV:
+ case INST_MULT:
+ case INST_LNOT:
+ case INST_BITNOT:
+ case INST_UMINUS:
+ case INST_UPLUS:
+ case INST_TRY_CVT_TO_NUMERIC:
+ blank = size;
+ break;
+ }
+ break;
}
if (blank > 0) {
for (i=0 ; i<blank ; i++) {
@@ -1466,6 +1514,7 @@ TclInitCompileEnv(
envPtr->mallocedLiteralArray = 0;
envPtr->exceptArrayPtr = envPtr->staticExceptArraySpace;
+ envPtr->exnStackDepthArrayPtr = envPtr->staticExnStackDepthArraySpace;
envPtr->exceptArrayNext = 0;
envPtr->exceptArrayEnd = COMPILEENV_INIT_EXCEPT_RANGES;
envPtr->mallocedExceptArray = 0;
@@ -1678,6 +1727,7 @@ TclFreeCompileEnv(
}
if (envPtr->mallocedExceptArray) {
ckfree(envPtr->exceptArrayPtr);
+ ckfree(envPtr->exnStackDepthArrayPtr);
}
if (envPtr->mallocedCmdMap) {
ckfree(envPtr->cmdMapPtr);
@@ -3371,12 +3421,16 @@ TclCreateExceptRange(
size_t currBytes =
envPtr->exceptArrayNext * sizeof(ExceptionRange);
+ size_t currBytes2 = envPtr->exceptArrayNext * sizeof(int);
int newElems = 2*envPtr->exceptArrayEnd;
size_t newBytes = newElems * sizeof(ExceptionRange);
+ size_t newBytes2 = newElems * sizeof(int);
if (envPtr->mallocedExceptArray) {
envPtr->exceptArrayPtr =
ckrealloc(envPtr->exceptArrayPtr, newBytes);
+ envPtr->exnStackDepthArrayPtr =
+ ckrealloc(envPtr->exnStackDepthArrayPtr, newBytes2);
} else {
/*
* envPtr->exceptArrayPtr isn't a ckalloc'd pointer, so we must
@@ -3384,9 +3438,12 @@ TclCreateExceptRange(
*/
ExceptionRange *newPtr = ckalloc(newBytes);
+ int *newPtr2 = ckalloc(newBytes2);
memcpy(newPtr, envPtr->exceptArrayPtr, currBytes);
+ memcpy(newPtr2, envPtr->exnStackDepthArrayPtr, currBytes2);
envPtr->exceptArrayPtr = newPtr;
+ envPtr->exnStackDepthArrayPtr = newPtr2;
envPtr->mallocedExceptArray = 1;
}
envPtr->exceptArrayEnd = newElems;
@@ -3401,6 +3458,7 @@ TclCreateExceptRange(
rangePtr->breakOffset = -1;
rangePtr->continueOffset = -1;
rangePtr->catchOffset = -1;
+ envPtr->exnStackDepthArrayPtr[index] = envPtr->currStackDepth;
return index;
}
diff --git a/generic/tclCompile.h b/generic/tclCompile.h
index 0be5d1d..c380823 100644
--- a/generic/tclCompile.h
+++ b/generic/tclCompile.h
@@ -275,6 +275,9 @@ typedef struct CompileEnv {
* entry. */
int mallocedExceptArray; /* 1 if ExceptionRange array was expanded and
* exceptArrayPtr points in heap, else 0. */
+ int *exnStackDepthArrayPtr; /* Array of stack depths to restore to when
+ * processing BREAK/CONTINUE exceptions. Must
+ * be the same size as the exceptArrayPtr. */
CmdLocation *cmdMapPtr; /* Points to start of CmdLocation array.
* numCommands is the index of the next entry
* to use; (numCommands-1) is the entry index
@@ -296,6 +299,9 @@ typedef struct CompileEnv {
/* Initial storage of LiteralEntry array. */
ExceptionRange staticExceptArraySpace[COMPILEENV_INIT_EXCEPT_RANGES];
/* Initial ExceptionRange array storage. */
+ int staticExnStackDepthArraySpace[COMPILEENV_INIT_EXCEPT_RANGES];
+ /* Initial static except stack depth array
+ * storage. */
CmdLocation staticCmdMapSpace[COMPILEENV_INIT_CMD_MAP_SIZE];
/* Initial storage for cmd location map. */
AuxData staticAuxDataArraySpace[COMPILEENV_INIT_AUX_DATA_SIZE];
generated by cgit v0.12 at 2024-11-17 13:28:47 (GMT)