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[PATCH] Fix slowness in demangler

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* cp-demangle.c (d_print_init): Remove const from 4th param.
	(cplus_demangle_fill_name): Initialize d->d_counting.
	(cplus_demangle_fill_extended_operator): Likewise.
	(cplus_demangle_fill_ctor): Likewise.
	(cplus_demangle_fill_dtor): Likewise.
	(d_make_empty): Likewise.
	(d_count_templates_scopes): Remobe const from 3rd param,
	Return on dc->d_counting > 1,
	Increment dc->d_counting.
        * cp-demint.c (cplus_demangle_fill_component): Initialize d->d_counting.
	(cplus_demangle_fill_builtin_type): Likewise.
	(cplus_demangle_fill_operator): Likewise.

	* demangle.h (struct demangle_component): Add member
	d_counting.

From-SVN: r278359
This commit is contained in:
Jeff Law 2019-11-16 10:14:14 -07:00
parent 32fc3719e0
commit 513e0aa0c4
5 changed files with 37 additions and 6 deletions
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7
include/ChangeLog
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@ -1,4 +1,9 @@
2019-10-22 Eduard-Mihai Burtescu <eddyb@lyken.rs>
2019-11-16 Tim Ruehsen <tim.ruehsen@gmx.de>
* demangle.h (struct demangle_component): Add member
d_counting.
2019-11-16 Eduard-Mihai Burtescu <eddyb@lyken.rs>
* demangle.h (rust_demangle_callback): Add.

1
include/demangle.h
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@ -468,6 +468,7 @@ struct demangle_component
Initialize to zero. Private to d_print_comp.
All other fields are final after initialization. */
int d_printing;
int d_counting;
union
{

17
libiberty/ChangeLog
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@ -1,4 +1,19 @@
2019-10-22 Eduard-Mihai Burtescu <eddyb@lyken.rs>
2019-11-16 Tim Ruehsen <tim.ruehsen@gmx.de>
* cp-demangle.c (d_print_init): Remove const from 4th param.
(cplus_demangle_fill_name): Initialize d->d_counting.
(cplus_demangle_fill_extended_operator): Likewise.
(cplus_demangle_fill_ctor): Likewise.
(cplus_demangle_fill_dtor): Likewise.
(d_make_empty): Likewise.
(d_count_templates_scopes): Remobe const from 3rd param,
Return on dc->d_counting > 1,
Increment dc->d_counting.
* cp-demint.c (cplus_demangle_fill_component): Initialize d->d_counting.
(cplus_demangle_fill_builtin_type): Likewise.
(cplus_demangle_fill_operator): Likewise.
2019-11-16 Eduard-Mihai Burtescu <eddyb@lyken.rs>
* cplus-dem.c (cplus_demangle): Use rust_demangle directly.
(rust_demangle): Remove.

15
libiberty/cp-demangle.c
View File

@ -517,7 +517,7 @@ d_growable_string_callback_adapter (const char *, size_t, void *);
static void
d_print_init (struct d_print_info *, demangle_callbackref, void *,
const struct demangle_component *);
struct demangle_component *);
static inline void d_print_error (struct d_print_info *);
@ -864,6 +864,7 @@ cplus_demangle_fill_name (struct demangle_component *p, const char *s, int len)
if (p == NULL || s == NULL || len <= 0)
return 0;
p->d_printing = 0;
p->d_counting = 0;
p->type = DEMANGLE_COMPONENT_NAME;
p->u.s_name.s = s;
p->u.s_name.len = len;
@ -880,6 +881,7 @@ cplus_demangle_fill_extended_operator (struct demangle_component *p, int args,
if (p == NULL || args < 0 || name == NULL)
return 0;
p->d_printing = 0;
p->d_counting = 0;
p->type = DEMANGLE_COMPONENT_EXTENDED_OPERATOR;
p->u.s_extended_operator.args = args;
p->u.s_extended_operator.name = name;
@ -900,6 +902,7 @@ cplus_demangle_fill_ctor (struct demangle_component *p,
|| (int) kind > gnu_v3_object_ctor_group)
return 0;
p->d_printing = 0;
p->d_counting = 0;
p->type = DEMANGLE_COMPONENT_CTOR;
p->u.s_ctor.kind = kind;
p->u.s_ctor.name = name;
@ -920,6 +923,7 @@ cplus_demangle_fill_dtor (struct demangle_component *p,
|| (int) kind > gnu_v3_object_dtor_group)
return 0;
p->d_printing = 0;
p->d_counting = 0;
p->type = DEMANGLE_COMPONENT_DTOR;
p->u.s_dtor.kind = kind;
p->u.s_dtor.name = name;
@ -937,6 +941,7 @@ d_make_empty (struct d_info *di)
return NULL;
p = &di->comps[di->next_comp];
p->d_printing = 0;
p->d_counting = 0;
++di->next_comp;
return p;
}
@ -4079,11 +4084,13 @@ d_growable_string_callback_adapter (const char *s, size_t l, void *opaque)
static void
d_count_templates_scopes (struct d_print_info *dpi,
const struct demangle_component *dc)
struct demangle_component *dc)
{
if (dc == NULL)
if (dc == NULL || dc->d_counting > 1 || dpi->recursion > MAX_RECURSION_COUNT)
return;
++ dc->d_counting;
switch (dc->type)
{
case DEMANGLE_COMPONENT_NAME:
@ -4213,7 +4220,7 @@ d_count_templates_scopes (struct d_print_info *dpi,
static void
d_print_init (struct d_print_info *dpi, demangle_callbackref callback,
void *opaque, const struct demangle_component *dc)
void *opaque, struct demangle_component *dc)
{
dpi->len = 0;
dpi->last_char = '\0';

3
libiberty/cp-demint.c
View File

@ -125,6 +125,7 @@ cplus_demangle_fill_component (struct demangle_component *p,
p->u.s_binary.left = left;
p->u.s_binary.right = right;
p->d_printing = 0;
p->d_counting = 0;
return 1;
}
@ -149,6 +150,7 @@ cplus_demangle_fill_builtin_type (struct demangle_component *p,
p->type = DEMANGLE_COMPONENT_BUILTIN_TYPE;
p->u.s_builtin.type = &cplus_demangle_builtin_types[i];
p->d_printing = 0;
p->d_counting = 0;
return 1;
}
}
@ -176,6 +178,7 @@ cplus_demangle_fill_operator (struct demangle_component *p,
p->type = DEMANGLE_COMPONENT_OPERATOR;
p->u.s_operator.op = &cplus_demangle_operators[i];
p->d_printing = 0;
p->d_counting = 0;
return 1;
}
}