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Fix memory leaks in IPA CP (PR ipa/79337).

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2017-02-03  Martin Liska  <mliska@suse.cz>

	PR ipa/79337
	* ipa-prop.c (ipa_node_params_t::insert): Remove current
	implementation.
	(ipa_node_params_t::remove): Likewise.
	* ipa-prop.h (ipa_node_params::ipa_node_params): Make default
	initialization from removed ipa_node_params_t::insert.
	(ipa_node_params::~ipa_node_params): Move from removed
	ipa_node_params_t::release.
	* symbol-summary.h (symbol_summary::m_released): New member.
	Do not release a summary twice.  Do not allow to call finalizer
	for types of a summary that live in GGC memory.

From-SVN: r245145
This commit is contained in:
Martin Liska 2017-02-03 09:20:02 +01:00 • committed by Martin Liska
parent 6d5b4f9e71
commit e806796de0
4 changed files with 52 additions and 49 deletions
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14
gcc/ChangeLog
View file

@ -1,3 +1,17 @@
2017-02-03 Martin Liska <mliska@suse.cz>
PR ipa/79337
* ipa-prop.c (ipa_node_params_t::insert): Remove current
implementation.
(ipa_node_params_t::remove): Likewise.
* ipa-prop.h (ipa_node_params::ipa_node_params): Make default
initialization from removed ipa_node_params_t::insert.
(ipa_node_params::~ipa_node_params): Move from removed
ipa_node_params_t::release.
* symbol-summary.h (symbol_summary::m_released): New member.
Do not release a summary twice. Do not allow to call finalizer
for types of a summary that live in GGC memory.
2017-02-02 Naveen H.S <Naveen.Hurugalawadi@cavium.com>
* config/aarch64/aarch64.c (thunderx2t99_tunings): Enable AES and

32
gcc/ipa-prop.c
View file

@ -3736,38 +3736,6 @@ ipa_add_new_function (cgraph_node *node, void *data ATTRIBUTE_UNUSED)
ipa_analyze_node (node);
}
/* Initialize a newly created param info. */
void
ipa_node_params_t::insert (cgraph_node *, ipa_node_params *info)
{
info->lattices = NULL;
info->ipcp_orig_node = NULL;
info->known_csts = vNULL;
info->known_contexts = vNULL;
info->analysis_done = 0;
info->node_enqueued = 0;
info->do_clone_for_all_contexts = 0;
info->is_all_contexts_clone = 0;
info->node_dead = 0;
info->node_within_scc = 0;
info->node_calling_single_call = 0;
info->versionable = 0;
}
/* Frees all dynamically allocated structures that the param info points
to. */
void
ipa_node_params_t::remove (cgraph_node *, ipa_node_params *info)
{
free (info->lattices);
/* Lattice values and their sources are deallocated with their alocation
pool. */
info->known_csts.release ();
info->known_contexts.release ();
}
/* Hook that is called by summary when a node is duplicated. */
void

28
gcc/ipa-prop.h
View file

@ -320,6 +320,12 @@ struct GTY(()) ipa_param_descriptor
struct GTY((for_user)) ipa_node_params
{
/* Default constructor. */
ipa_node_params ();
/* Default destructor. */
~ipa_node_params ();
/* Information about individual formal parameters that are gathered when
summaries are generated. */
vec<ipa_param_descriptor, va_gc> *descriptors;
@ -356,6 +362,24 @@ struct GTY((for_user)) ipa_node_params
unsigned versionable : 1;
};
inline
ipa_node_params::ipa_node_params ()
: descriptors (NULL), lattices (NULL), ipcp_orig_node (NULL),
known_csts (vNULL), known_contexts (vNULL), analysis_done (0),
node_enqueued (0), do_clone_for_all_contexts (0), is_all_contexts_clone (0),
node_dead (0), node_within_scc (0), node_calling_single_call (0),
versionable (0)
{
}
inline
ipa_node_params::~ipa_node_params ()
{
free (lattices);
known_csts.release ();
known_contexts.release ();
}
/* Intermediate information that we get from alias analysis about a particular
parameter in a particular basic_block. When a parameter or the memory it
references is marked modified, we use that information in all dominated
@ -579,10 +603,6 @@ public:
ipa_node_params_t (symbol_table *table, bool ggc):
function_summary<ipa_node_params *> (table, ggc) { }
/* Hook that is called by summary when a node is deleted. */
virtual void insert (cgraph_node *, ipa_node_params *info);
/* Hook that is called by summary when a node is deleted. */
virtual void remove (cgraph_node *, ipa_node_params *info);
/* Hook that is called by summary when a node is duplicated. */
virtual void duplicate (cgraph_node *node,
cgraph_node *node2,

27
gcc/symbol-summary.h
View file

@ -37,7 +37,8 @@ class GTY((user)) function_summary <T *>
public:
/* Default construction takes SYMTAB as an argument. */
function_summary (symbol_table *symtab, bool ggc = false): m_ggc (ggc),
m_map (13, ggc), m_insertion_enabled (true), m_symtab (symtab)
m_map (13, ggc), m_insertion_enabled (true), m_released (false),
m_symtab (symtab)
{
m_symtab_insertion_hook =
symtab->add_cgraph_insertion_hook
@ -60,23 +61,19 @@ public:
/* Destruction method that can be called for GGT purpose. */
void release ()
{
if (m_symtab_insertion_hook)
m_symtab->remove_cgraph_insertion_hook (m_symtab_insertion_hook);
if (m_released)
return;
if (m_symtab_removal_hook)
m_symtab->remove_cgraph_removal_hook (m_symtab_removal_hook);
if (m_symtab_duplication_hook)
m_symtab->remove_cgraph_duplication_hook (m_symtab_duplication_hook);
m_symtab_insertion_hook = NULL;
m_symtab_removal_hook = NULL;
m_symtab_duplication_hook = NULL;
m_symtab->remove_cgraph_insertion_hook (m_symtab_insertion_hook);
m_symtab->remove_cgraph_removal_hook (m_symtab_removal_hook);
m_symtab->remove_cgraph_duplication_hook (m_symtab_duplication_hook);
/* Release all summaries. */
typedef typename hash_map <map_hash, T *>::iterator map_iterator;
for (map_iterator it = m_map.begin (); it != m_map.end (); ++it)
release ((*it).second);
m_released = true;
}
/* Traverses all summarys with a function F called with
@ -99,7 +96,9 @@ public:
/* Allocates new data that are stored within map. */
T* allocate_new ()
{
return m_ggc ? new (ggc_alloc <T> ()) T() : new T () ;
/* Call gcc_internal_because we do not want to call finalizer for
a type T. We call dtor explicitly. */
return m_ggc ? new (ggc_internal_alloc (sizeof (T))) T () : new T () ;
}
/* Release an item that is stored within map. */
@ -216,6 +215,8 @@ private:
cgraph_2node_hook_list *m_symtab_duplication_hook;
/* Indicates if insertion hook is enabled. */
bool m_insertion_enabled;
/* Indicates if the summary is released. */
bool m_released;
/* Symbol table the summary is registered to. */
symbol_table *m_symtab;