register OP *kid, *nextkid;
OPCODE type;
- if (!o || o->op_seq == (U16)-1)
+ if (!o || o->op_static)
return;
if (o->op_private & OPpREFCOUNTED) {
case OP_GVSV:
case OP_GV:
case OP_AELEMFAST:
+ if (! (o->op_type == OP_AELEMFAST && o->op_flags & OPf_SPECIAL)) {
+ /* not an OP_PADAV replacement */
#ifdef USE_ITHREADS
- if (cPADOPo->op_padix > 0) {
- /* No GvIN_PAD_off(cGVOPo_gv) here, because other references
- * may still exist on the pad */
- pad_swipe(cPADOPo->op_padix, TRUE);
- cPADOPo->op_padix = 0;
- }
+ if (cPADOPo->op_padix > 0) {
+ /* No GvIN_PAD_off(cGVOPo_gv) here, because other references
+ * may still exist on the pad */
+ pad_swipe(cPADOPo->op_padix, TRUE);
+ cPADOPo->op_padix = 0;
+ }
#else
- SvREFCNT_dec(cSVOPo->op_sv);
- cSVOPo->op_sv = Nullsv;
+ SvREFCNT_dec(cSVOPo->op_sv);
+ cSVOPo->op_sv = Nullsv;
#endif
+ }
break;
case OP_METHOD_NAMED:
case OP_CONST:
#ifdef USE_ITHREADS
/** Bug #15654
Even if op_clear does a pad_free for the target of the op,
- pad_free doesn't actually remove the sv that exists in the bad
+ pad_free doesn't actually remove the sv that exists in the pad;
instead it lives on. This results in that it could be reused as
a target later on when the pad was reallocated.
**/
else {
if (ckWARN(WARN_VOID)) {
useless = "a constant";
+ /* don't warn on optimised away booleans, eg
+ * use constant Foo, 5; Foo || print; */
+ if (cSVOPo->op_private & OPpCONST_SHORTCIRCUIT)
+ useless = 0;
/* the constants 0 and 1 are permitted as they are
conventionally used as dummies in constructs like
1 while some_condition_with_side_effects; */
- if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0))
+ else if (SvNIOK(sv) && (SvNV(sv) == 0.0 || SvNV(sv) == 1.0))
useless = 0;
else if (SvPOK(sv)) {
/* perl4's way of mixing documentation and code
break;
case OP_AELEMFAST:
- localize = 1;
+ localize = -1;
PL_modcount++;
break;
o->op_ppaddr = PL_ppaddr[OP_RV2AV];
o->op_flags &= ~OPf_REF; /* treat \(1..2) like an ordinary list */
o->op_flags |= OPf_PARENS; /* and flatten \(1..2,3) */
- o->op_seq = 0; /* needs to be revisited in peep() */
+ o->op_opt = 0; /* needs to be revisited in peep() */
curop = ((UNOP*)o)->op_first;
((UNOP*)o)->op_first = newSVOP(OP_CONST, 0, SvREFCNT_inc(*PL_stack_sp--));
op_free(curop);
if ((type == OP_AND) == (SvTRUE(((SVOP*)first)->op_sv))) {
op_free(first);
*firstp = Nullop;
+ other->op_private |= OPpCONST_SHORTCIRCUIT;
return other;
}
else {
op_free(other);
*otherp = Nullop;
+ first->op_private |= OPpCONST_SHORTCIRCUIT;
return first;
}
}
}
}
+ /* if block is null, the next append_elem() would put UNSTACK, a scalar
+ * op, in listop. This is wrong. [perl #27024] */
+ if (!block)
+ block = newOP(OP_NULL, 0);
listop = append_elem(OP_LINESEQ, block, newOP(OP_UNSTACK, 0));
o = new_logop(OP_AND, 0, &expr, &listop);
}
else {
padoff = offset;
- iterpflags = OPpLVAL_INTRO; /* my $_; for () */
}
}
if (expr->op_type == OP_RV2AV || expr->op_type == OP_PADAV) {
{
register OP* oldop = 0;
- if (!o || o->op_seq)
+ if (!o || o->op_opt)
return;
ENTER;
SAVEOP();
SAVEVPTR(PL_curcop);
for (; o; o = o->op_next) {
- if (o->op_seq)
+ if (o->op_opt)
break;
- /* The special value -1 is used by the B::C compiler backend to indicate
- * that an op is statically defined and should not be freed */
- if (!PL_op_seqmax || PL_op_seqmax == (U16)-1)
- PL_op_seqmax = 1;
PL_op = o;
switch (o->op_type) {
case OP_SETSTATE:
case OP_NEXTSTATE:
case OP_DBSTATE:
PL_curcop = ((COP*)o); /* for warnings */
- o->op_seq = PL_op_seqmax++;
+ o->op_opt = 1;
break;
case OP_CONST:
o->op_targ = ix;
}
#endif
- o->op_seq = PL_op_seqmax++;
+ o->op_opt = 1;
break;
case OP_CONCAT:
op_null(o->op_next);
}
ignore_optimization:
- o->op_seq = PL_op_seqmax++;
+ o->op_opt = 1;
break;
case OP_STUB:
if ((o->op_flags & OPf_WANT) != OPf_WANT_LIST) {
- o->op_seq = PL_op_seqmax++;
+ o->op_opt = 1;
break; /* Scalar stub must produce undef. List stub is noop */
}
goto nothin;
to peep() from mistakenly concluding that optimisation
has already occurred. This doesn't fix the real problem,
though (See 20010220.007). AMS 20010719 */
+ /* op_seq functionality is now replaced by op_opt */
if (oldop && o->op_next) {
oldop->op_next = o->op_next;
continue;
oldop->op_next = o->op_next;
continue;
}
- o->op_seq = PL_op_seqmax++;
+ o->op_opt = 1;
break;
+ case OP_PADAV:
case OP_GV:
- if (o->op_next->op_type == OP_RV2SV) {
- if (!(o->op_next->op_private & OPpDEREF)) {
- op_null(o->op_next);
- o->op_private |= o->op_next->op_private & (OPpLVAL_INTRO
- | OPpOUR_INTRO);
- o->op_next = o->op_next->op_next;
- o->op_type = OP_GVSV;
- o->op_ppaddr = PL_ppaddr[OP_GVSV];
- }
- }
- else if (o->op_next->op_type == OP_RV2AV) {
- OP* pop = o->op_next->op_next;
+ if (o->op_type == OP_PADAV || o->op_next->op_type == OP_RV2AV) {
+ OP* pop = (o->op_type == OP_PADAV) ?
+ o->op_next : o->op_next->op_next;
IV i;
if (pop && pop->op_type == OP_CONST &&
(PL_op = pop->op_next) &&
i >= 0)
{
GV *gv;
- op_null(o->op_next);
+ if (o->op_type == OP_GV)
+ op_null(o->op_next);
op_null(pop->op_next);
op_null(pop);
o->op_flags |= pop->op_next->op_flags & OPf_MOD;
o->op_next = pop->op_next->op_next;
- o->op_type = OP_AELEMFAST;
o->op_ppaddr = PL_ppaddr[OP_AELEMFAST];
o->op_private = (U8)i;
- gv = cGVOPo_gv;
- GvAVn(gv);
+ if (o->op_type == OP_GV) {
+ gv = cGVOPo_gv;
+ GvAVn(gv);
+ }
+ else
+ o->op_flags |= OPf_SPECIAL;
+ o->op_type = OP_AELEMFAST;
+ }
+ o->op_opt = 1;
+ break;
+ }
+
+ if (o->op_next->op_type == OP_RV2SV) {
+ if (!(o->op_next->op_private & OPpDEREF)) {
+ op_null(o->op_next);
+ o->op_private |= o->op_next->op_private & (OPpLVAL_INTRO
+ | OPpOUR_INTRO);
+ o->op_next = o->op_next->op_next;
+ o->op_type = OP_GVSV;
+ o->op_ppaddr = PL_ppaddr[OP_GVSV];
}
}
else if ((o->op_private & OPpEARLY_CV) && ckWARN(WARN_PROTOTYPE)) {
op_null(o->op_next);
}
- o->op_seq = PL_op_seqmax++;
+ o->op_opt = 1;
break;
case OP_MAPWHILE:
case OP_DORASSIGN:
case OP_COND_EXPR:
case OP_RANGE:
- o->op_seq = PL_op_seqmax++;
+ o->op_opt = 1;
while (cLOGOP->op_other->op_type == OP_NULL)
cLOGOP->op_other = cLOGOP->op_other->op_next;
peep(cLOGOP->op_other); /* Recursive calls are not replaced by fptr calls */
case OP_ENTERLOOP:
case OP_ENTERITER:
- o->op_seq = PL_op_seqmax++;
+ o->op_opt = 1;
while (cLOOP->op_redoop->op_type == OP_NULL)
cLOOP->op_redoop = cLOOP->op_redoop->op_next;
peep(cLOOP->op_redoop);
case OP_QR:
case OP_MATCH:
case OP_SUBST:
- o->op_seq = PL_op_seqmax++;
+ o->op_opt = 1;
while (cPMOP->op_pmreplstart &&
cPMOP->op_pmreplstart->op_type == OP_NULL)
cPMOP->op_pmreplstart = cPMOP->op_pmreplstart->op_next;
break;
case OP_EXEC:
- o->op_seq = PL_op_seqmax++;
+ o->op_opt = 1;
if (ckWARN(WARN_SYNTAX) && o->op_next
&& o->op_next->op_type == OP_NEXTSTATE) {
if (o->op_next->op_sibling &&
char *key = NULL;
STRLEN keylen;
- o->op_seq = PL_op_seqmax++;
+ o->op_opt = 1;
if (((BINOP*)o)->op_last->op_type != OP_CONST)
break;
OP *oleft, *oright;
OP *o2;
- o->op_seq = PL_op_seqmax++;
+ o->op_opt = 1;
/* check that RHS of sort is a single plain array */
oright = cUNOPo->op_first;
default:
- o->op_seq = PL_op_seqmax++;
+ o->op_opt = 1;
break;
}
oldop = o;
projects / p5sagit/p5-mst-13.2.git / blobdiff