Re: [PATCH] Fix IPA CP where it forgot to add a reference in cgraph

2017-01-20 Thread Martin Liška 
On 01/19/2017 04:10 PM, Jan Hubicka wrote:
 2016-12-19  Martin Liska  

* cgraphclones.c (cgraph_node::create_virtual_clone):
Create either IPA_REF_LOAD of IPA_REF_READ depending on
whether new_tree is a VAR_DECL or an ADDR_EXPR.
* ipa-cp.c (create_specialized_node): Add reference just for
ADDR_EXPRs.
* symtab.c (symtab_node::maybe_create_reference): Remove guard
as it's guarded in callers.
> 
> Path is OK
>>  ipa_ref *
>> -symtab_node::maybe_create_reference (tree val, enum ipa_ref_use use_type,
>> - gimple *stmt)
>> +symtab_node::maybe_create_reference (tree val, gimple *stmt)
>>  {
>>STRIP_NOPS (val);
>> -  if (TREE_CODE (val) != ADDR_EXPR)
>> -return NULL;
>> +  ipa_ref_use use_type;
>> +
>> +  switch (TREE_CODE (val))
>> +{
>> +case VAR_DECL:
>> +  use_type = IPA_REF_LOAD;
>> +  break;
>> +case ADDR_EXPR:
>> +  use_type = IPA_REF_ADDR;
>> +  break;
>> +default:
>> +  return NULL;
>> +}
> 
> I would add assert into default that we don't get handled_component_ref here 
> so we are sure
> we don't miss any declarations (because the bug leads to quite esoteric 
> issues, it is better
> to be safe than sorry)
> 
> Honza
> 

Done in patch I've just installed as r244687.

Thanks for help,
Martin
>From b0c002ba76312ba7cf38a41b1127ae8a55e89639 Mon Sep 17 00:00:00 2001
From: marxin 
Date: Mon, 19 Dec 2016 11:03:34 +0100
Subject: [PATCH] Fix IPA CP where it forgot to add a reference in cgraph (PR
 ipa/71190).

gcc/ChangeLog:

2017-01-19  Martin Liska  

	PR ipa/71190
	* cgraph.h (maybe_create_reference): Remove argument and
	update comment.
	* cgraphclones.c (cgraph_node::create_virtual_clone): Remove one
	argument.
	* ipa-cp.c (create_specialized_node): Likewise.
	* symtab.c (symtab_node::maybe_create_reference): Handle
	VAR_DECLs and ADDR_EXPRs and select ipa_ref_use type.
---
 gcc/cgraph.h   |  6 ++
 gcc/cgraphclones.c |  2 +-
 gcc/ipa-cp.c   |  2 +-
 gcc/symtab.c   | 25 -
 4 files changed, 20 insertions(+), 15 deletions(-)

diff --git a/gcc/cgraph.h b/gcc/cgraph.h
index db2915c5751..5410a71176a 100644
--- a/gcc/cgraph.h
+++ b/gcc/cgraph.h
@@ -131,11 +131,9 @@ public:
 			 enum ipa_ref_use use_type, gimple *stmt);
 
   /* If VAL is a reference to a function or a variable, add a reference from
- this symtab_node to the corresponding symbol table node.  USE_TYPE specify
- type of the use and STMT the statement (if it exists).  Return the new
+ this symtab_node to the corresponding symbol table node.  Return the new
  reference or NULL if none was created.  */
-  ipa_ref *maybe_create_reference (tree val, enum ipa_ref_use use_type,
-   gimple *stmt);
+  ipa_ref *maybe_create_reference (tree val, gimple *stmt);
 
   /* Clone all references from symtab NODE to this symtab_node.  */
   void clone_references (symtab_node *node);
diff --git a/gcc/cgraphclones.c b/gcc/cgraphclones.c
index a17663519a9..c2337e84553 100644
--- a/gcc/cgraphclones.c
+++ b/gcc/cgraphclones.c
@@ -624,7 +624,7 @@ cgraph_node::create_virtual_clone (vec redirect_callers,
   || in_lto_p)
 new_node->unique_name = true;
   FOR_EACH_VEC_SAFE_ELT (tree_map, i, map)
-new_node->maybe_create_reference (map->new_tree, IPA_REF_ADDR, NULL);
+new_node->maybe_create_reference (map->new_tree, NULL);
 
   if (ipa_transforms_to_apply.exists ())
 new_node->ipa_transforms_to_apply
diff --git a/gcc/ipa-cp.c b/gcc/ipa-cp.c
index 9cc903769e8..aa3c9973a66 100644
--- a/gcc/ipa-cp.c
+++ b/gcc/ipa-cp.c
@@ -3786,7 +3786,7 @@ create_specialized_node (struct cgraph_node *node,
 	 args_to_skip, "constprop");
   ipa_set_node_agg_value_chain (new_node, aggvals);
   for (av = aggvals; av; av = av->next)
-new_node->maybe_create_reference (av->value, IPA_REF_ADDR, NULL);
+new_node->maybe_create_reference (av->value, NULL);
 
   if (dump_file && (dump_flags & TDF_DETAILS))
 {
diff --git a/gcc/symtab.c b/gcc/symtab.c
index 87120970d34..c21e7acf28c 100644
--- a/gcc/symtab.c
+++ b/gcc/symtab.c
@@ -588,18 +588,25 @@ symtab_node::create_reference (symtab_node *referred_node,
   return ref;
 }
 
-/* If VAL is a reference to a function or a variable, add a reference from
-   this symtab_node to the corresponding symbol table node.  USE_TYPE specify
-   type of the use and STMT the statement (if it exists).  Return the new
-   reference or NULL if none was created.  */
-
 ipa_ref *
-symtab_node::maybe_create_reference (tree val, enum ipa_ref_use use_type,
- gimple *stmt)
+symtab_node::maybe_create_reference (tree val, gimple *stmt)
 {
   STRIP_NOPS (val);
-  if (TREE_CODE (val) != ADDR_EXPR)
-return NULL;
+  ipa_ref_use use_type;
+
+  switch (TREE_CODE (val))
+{
+case VAR_DECL:
+  use_type = IPA_REF_LOAD;
+  break;
+case ADDR_EXPR:
+  use_type = IPA_REF_ADDR;
+

Re: [PATCH] Fix IPA CP where it forgot to add a reference in cgraph

2017-01-19 Thread Jan Hubicka 
> >> 2016-12-19  Martin Liska  
> >>
> >>* cgraphclones.c (cgraph_node::create_virtual_clone):
> >>Create either IPA_REF_LOAD of IPA_REF_READ depending on
> >>whether new_tree is a VAR_DECL or an ADDR_EXPR.
> >>* ipa-cp.c (create_specialized_node): Add reference just for
> >>ADDR_EXPRs.
> >>* symtab.c (symtab_node::maybe_create_reference): Remove guard
> >>as it's guarded in callers.

Path is OK
>  ipa_ref *
> -symtab_node::maybe_create_reference (tree val, enum ipa_ref_use use_type,
> -  gimple *stmt)
> +symtab_node::maybe_create_reference (tree val, gimple *stmt)
>  {
>STRIP_NOPS (val);
> -  if (TREE_CODE (val) != ADDR_EXPR)
> -return NULL;
> +  ipa_ref_use use_type;
> +
> +  switch (TREE_CODE (val))
> +{
> +case VAR_DECL:
> +  use_type = IPA_REF_LOAD;
> +  break;
> +case ADDR_EXPR:
> +  use_type = IPA_REF_ADDR;
> +  break;
> +default:
> +  return NULL;
> +}

I would add assert into default that we don't get handled_component_ref here so 
we are sure
we don't miss any declarations (because the bug leads to quite esoteric issues, 
it is better
to be safe than sorry)

Honza

Re: [PATCH] Fix IPA CP where it forgot to add a reference in cgraph

2017-01-19 Thread Martin Liška 
On 01/18/2017 11:18 PM, Jan Hubicka wrote:
>>
>> 2016-12-19  Martin Liska  
>>
>>  * cgraphclones.c (cgraph_node::create_virtual_clone):
>>  Create either IPA_REF_LOAD of IPA_REF_READ depending on
>>  whether new_tree is a VAR_DECL or an ADDR_EXPR.
>>  * ipa-cp.c (create_specialized_node): Add reference just for
>>  ADDR_EXPRs.
>>  * symtab.c (symtab_node::maybe_create_reference): Remove guard
>>  as it's guarded in callers.
>> ---
>>  gcc/cgraphclones.c | 6 +-
>>  gcc/ipa-cp.c   | 3 ++-
>>  gcc/symtab.c   | 2 --
>>  3 files changed, 7 insertions(+), 4 deletions(-)
>>
>> diff --git a/gcc/cgraphclones.c b/gcc/cgraphclones.c
>> index 349892dab67..6c8fe156f23 100644
>> --- a/gcc/cgraphclones.c
>> +++ b/gcc/cgraphclones.c
>> @@ -624,7 +624,11 @@ cgraph_node::create_virtual_clone (vec 
>> redirect_callers,
>>|| in_lto_p)
>>  new_node->unique_name = true;
>>FOR_EACH_VEC_SAFE_ELT (tree_map, i, map)
>> -new_node->maybe_create_reference (map->new_tree, IPA_REF_ADDR, NULL);
>> +{
>> +  ipa_ref_use use_type
>> += TREE_CODE (map->new_tree) == ADDR_EXPR ? IPA_REF_ADDR : IPA_REF_LOAD;
>> +  new_node->maybe_create_reference (map->new_tree, use_type, NULL);
>> +}
>>  
>>if (ipa_transforms_to_apply.exists ())
>>  new_node->ipa_transforms_to_apply
>> diff --git a/gcc/ipa-cp.c b/gcc/ipa-cp.c
>> index d3b50524457..fd312b56fde 100644
>> --- a/gcc/ipa-cp.c
>> +++ b/gcc/ipa-cp.c
>> @@ -3787,7 +3787,8 @@ create_specialized_node (struct cgraph_node *node,
>>   args_to_skip, "constprop");
>>ipa_set_node_agg_value_chain (new_node, aggvals);
>>for (av = aggvals; av; av = av->next)
>> -new_node->maybe_create_reference (av->value, IPA_REF_ADDR, NULL);
>> +if (TREE_CODE (av->value) == ADDR_EXPR)
>> +  new_node->maybe_create_reference (av->value, IPA_REF_ADDR, NULL);
>>  
>>if (dump_file && (dump_flags & TDF_DETAILS))
>>  {
>> diff --git a/gcc/symtab.c b/gcc/symtab.c
>> index 73168a8db09..562a4a2f6a6 100644
>> --- a/gcc/symtab.c
>> +++ b/gcc/symtab.c
>> @@ -598,8 +598,6 @@ symtab_node::maybe_create_reference (tree val, enum 
>> ipa_ref_use use_type,
>>   gimple *stmt)
>>  {
>>STRIP_NOPS (val);
>> -  if (TREE_CODE (val) != ADDR_EXPR)
>> -return NULL;
> 
> Perhaps maybe_create_reference should drop the use_type argument (it is used
> with IPA_REF_ADDR only anyway) and should do the parsing itself?
> I.e. if there is reference do IPA_REF_LOAD and if there is ADDR_EXPR do
> IPA_REF_ADDR.  Why one can not have handled component refs in there?
> 
> Honza

Ok, this is updated version that I've been testing. Added a reference to PR that
we just identified that is also caused by IPA CP and will be fixed by the patch.

Thanks,
Martin

>>val = get_base_var (val);
>>if (val && VAR_OR_FUNCTION_DECL_P (val))
>>  {
>> -- 
>> 2.11.0
>>
> 

>From f42c5ea2ce09ecbf02e472ce31add53189115d66 Mon Sep 17 00:00:00 2001
From: marxin 
Date: Mon, 19 Dec 2016 11:03:34 +0100
Subject: [PATCH] Fix IPA CP where it forgot to add a reference in cgraph (PR
 ipa/71190).

gcc/ChangeLog:

2017-01-19  Martin Liska  

	PR ipa/71190
	* cgraph.h (maybe_create_reference): Remove argument and
	update comment.
	* cgraphclones.c (cgraph_node::create_virtual_clone): Remove one
	argument.
	* ipa-cp.c (create_specialized_node): Likewise.
	* symtab.c (symtab_node::maybe_create_reference): Handle
	VAR_DECLs and ADDR_EXPRs and select ipa_ref_use type.
---
 gcc/cgraph.h   |  6 ++
 gcc/cgraphclones.c |  2 +-
 gcc/ipa-cp.c   |  2 +-
 gcc/symtab.c   | 24 +++-
 4 files changed, 19 insertions(+), 15 deletions(-)

diff --git a/gcc/cgraph.h b/gcc/cgraph.h
index db2915c5751..5410a71176a 100644
--- a/gcc/cgraph.h
+++ b/gcc/cgraph.h
@@ -131,11 +131,9 @@ public:
 			 enum ipa_ref_use use_type, gimple *stmt);
 
   /* If VAL is a reference to a function or a variable, add a reference from
- this symtab_node to the corresponding symbol table node.  USE_TYPE specify
- type of the use and STMT the statement (if it exists).  Return the new
+ this symtab_node to the corresponding symbol table node.  Return the new
  reference or NULL if none was created.  */
-  ipa_ref *maybe_create_reference (tree val, enum ipa_ref_use use_type,
-   gimple *stmt);
+  ipa_ref *maybe_create_reference (tree val, gimple *stmt);
 
   /* Clone all references from symtab NODE to this symtab_node.  */
   void clone_references (symtab_node *node);
diff --git a/gcc/cgraphclones.c b/gcc/cgraphclones.c
index a17663519a9..c2337e84553 100644
--- a/gcc/cgraphclones.c
+++ b/gcc/cgraphclones.c
@@ -624,7 +624,7 @@ cgraph_node::create_virtual_clone (vec redirect_callers,
   || in_lto_p)
 new_node->unique_name = true;
   FOR_EACH_VEC_SAFE_ELT (tree_map, i, map)
-new_node->maybe_create_reference (map->new_tree, IPA_REF_ADDR,

Re: [PATCH] Fix IPA CP where it forgot to add a reference in cgraph

2017-01-18 Thread Jan Hubicka 
> 
> 2016-12-19  Martin Liska  
> 
>   * cgraphclones.c (cgraph_node::create_virtual_clone):
>   Create either IPA_REF_LOAD of IPA_REF_READ depending on
>   whether new_tree is a VAR_DECL or an ADDR_EXPR.
>   * ipa-cp.c (create_specialized_node): Add reference just for
>   ADDR_EXPRs.
>   * symtab.c (symtab_node::maybe_create_reference): Remove guard
>   as it's guarded in callers.
> ---
>  gcc/cgraphclones.c | 6 +-
>  gcc/ipa-cp.c   | 3 ++-
>  gcc/symtab.c   | 2 --
>  3 files changed, 7 insertions(+), 4 deletions(-)
> 
> diff --git a/gcc/cgraphclones.c b/gcc/cgraphclones.c
> index 349892dab67..6c8fe156f23 100644
> --- a/gcc/cgraphclones.c
> +++ b/gcc/cgraphclones.c
> @@ -624,7 +624,11 @@ cgraph_node::create_virtual_clone (vec 
> redirect_callers,
>|| in_lto_p)
>  new_node->unique_name = true;
>FOR_EACH_VEC_SAFE_ELT (tree_map, i, map)
> -new_node->maybe_create_reference (map->new_tree, IPA_REF_ADDR, NULL);
> +{
> +  ipa_ref_use use_type
> + = TREE_CODE (map->new_tree) == ADDR_EXPR ? IPA_REF_ADDR : IPA_REF_LOAD;
> +  new_node->maybe_create_reference (map->new_tree, use_type, NULL);
> +}
>  
>if (ipa_transforms_to_apply.exists ())
>  new_node->ipa_transforms_to_apply
> diff --git a/gcc/ipa-cp.c b/gcc/ipa-cp.c
> index d3b50524457..fd312b56fde 100644
> --- a/gcc/ipa-cp.c
> +++ b/gcc/ipa-cp.c
> @@ -3787,7 +3787,8 @@ create_specialized_node (struct cgraph_node *node,
>args_to_skip, "constprop");
>ipa_set_node_agg_value_chain (new_node, aggvals);
>for (av = aggvals; av; av = av->next)
> -new_node->maybe_create_reference (av->value, IPA_REF_ADDR, NULL);
> +if (TREE_CODE (av->value) == ADDR_EXPR)
> +  new_node->maybe_create_reference (av->value, IPA_REF_ADDR, NULL);
>  
>if (dump_file && (dump_flags & TDF_DETAILS))
>  {
> diff --git a/gcc/symtab.c b/gcc/symtab.c
> index 73168a8db09..562a4a2f6a6 100644
> --- a/gcc/symtab.c
> +++ b/gcc/symtab.c
> @@ -598,8 +598,6 @@ symtab_node::maybe_create_reference (tree val, enum 
> ipa_ref_use use_type,
>gimple *stmt)
>  {
>STRIP_NOPS (val);
> -  if (TREE_CODE (val) != ADDR_EXPR)
> -return NULL;

Perhaps maybe_create_reference should drop the use_type argument (it is used
with IPA_REF_ADDR only anyway) and should do the parsing itself?
I.e. if there is reference do IPA_REF_LOAD and if there is ADDR_EXPR do
IPA_REF_ADDR.  Why one can not have handled component refs in there?

Honza
>val = get_base_var (val);
>if (val && VAR_OR_FUNCTION_DECL_P (val))
>  {
> -- 
> 2.11.0
>

Re: [PATCH] Fix IPA CP where it forgot to add a reference in cgraph

2017-01-10 Thread Martin Liška 

PING^1

On 12/20/2016 03:55 PM, Martin Liška wrote:

On 12/20/2016 11:06 AM, Martin Jambor wrote:

...this test should be for ADDR_EXPR here.  Or you could switch the
IPA_REF_* constants the other way round which I bet is going to have
the same effect in practice, but personally, I'd test for ADDR_EXPR.


Thanks for the note, fixed (and tested in second version of the patch).

Martin



Thanks,

Martin

Re: [PATCH] Fix IPA CP where it forgot to add a reference in cgraph

2016-12-20 Thread Martin Liška 
On 12/20/2016 11:06 AM, Martin Jambor wrote:
> ...this test should be for ADDR_EXPR here.  Or you could switch the
> IPA_REF_* constants the other way round which I bet is going to have
> the same effect in practice, but personally, I'd test for ADDR_EXPR.

Thanks for the note, fixed (and tested in second version of the patch).

Martin

> 
> Thanks,
> 
> Martin

>From 2e29080e44cce899f9d5181185aba0a8a8791a9a Mon Sep 17 00:00:00 2001
From: marxin 
Date: Mon, 19 Dec 2016 11:03:34 +0100
Subject: [PATCH] Fix IPA CP where it forgot to add a reference in cgraph

gcc/ChangeLog:

2016-12-19  Martin Liska  

	* cgraphclones.c (cgraph_node::create_virtual_clone):
	Create either IPA_REF_LOAD of IPA_REF_READ depending on
	whether new_tree is a VAR_DECL or an ADDR_EXPR.
	* ipa-cp.c (create_specialized_node): Add reference just for
	ADDR_EXPRs.
	* symtab.c (symtab_node::maybe_create_reference): Remove guard
	as it's guarded in callers.
---
 gcc/cgraphclones.c | 6 +-
 gcc/ipa-cp.c   | 3 ++-
 gcc/symtab.c   | 2 --
 3 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/gcc/cgraphclones.c b/gcc/cgraphclones.c
index 349892dab67..6c8fe156f23 100644
--- a/gcc/cgraphclones.c
+++ b/gcc/cgraphclones.c
@@ -624,7 +624,11 @@ cgraph_node::create_virtual_clone (vec redirect_callers,
   || in_lto_p)
 new_node->unique_name = true;
   FOR_EACH_VEC_SAFE_ELT (tree_map, i, map)
-new_node->maybe_create_reference (map->new_tree, IPA_REF_ADDR, NULL);
+{
+  ipa_ref_use use_type
+	= TREE_CODE (map->new_tree) == ADDR_EXPR ? IPA_REF_ADDR : IPA_REF_LOAD;
+  new_node->maybe_create_reference (map->new_tree, use_type, NULL);
+}
 
   if (ipa_transforms_to_apply.exists ())
 new_node->ipa_transforms_to_apply
diff --git a/gcc/ipa-cp.c b/gcc/ipa-cp.c
index d3b50524457..fd312b56fde 100644
--- a/gcc/ipa-cp.c
+++ b/gcc/ipa-cp.c
@@ -3787,7 +3787,8 @@ create_specialized_node (struct cgraph_node *node,
 	 args_to_skip, "constprop");
   ipa_set_node_agg_value_chain (new_node, aggvals);
   for (av = aggvals; av; av = av->next)
-new_node->maybe_create_reference (av->value, IPA_REF_ADDR, NULL);
+if (TREE_CODE (av->value) == ADDR_EXPR)
+  new_node->maybe_create_reference (av->value, IPA_REF_ADDR, NULL);
 
   if (dump_file && (dump_flags & TDF_DETAILS))
 {
diff --git a/gcc/symtab.c b/gcc/symtab.c
index 73168a8db09..562a4a2f6a6 100644
--- a/gcc/symtab.c
+++ b/gcc/symtab.c
@@ -598,8 +598,6 @@ symtab_node::maybe_create_reference (tree val, enum ipa_ref_use use_type,
  gimple *stmt)
 {
   STRIP_NOPS (val);
-  if (TREE_CODE (val) != ADDR_EXPR)
-return NULL;
   val = get_base_var (val);
   if (val && VAR_OR_FUNCTION_DECL_P (val))
 {
-- 
2.11.0

Re: [PATCH] Fix IPA CP where it forgot to add a reference in cgraph

2016-12-20 Thread Martin Jambor 
Hi,

On Mon, Dec 19, 2016 at 11:09:52AM +0100, Martin Liska wrote:
> Hello.
> 
> Building mariadb with -flto exposes a bug which I also used to see
> in Firefox. It's caused by IPA CP starting from r236418, where the
> pass started to propagate const VAR_DECLs. Problem is that the pass
> does not update call graph by adding IPA_REF_READ of the propagated
> variable.
> 
> Patch can bootstrap on ppc64le-redhat-linux and survives regression tests.
> 
> Ready to be installed?

Honza needs to have a look at this but since I have suggested this
approach, I am of course fine with it, except that...


> Martin

> From 477e81fde08d0520ce552ec8baa0349590dc683c Mon Sep 17 00:00:00 2001
> From: marxin 
> Date: Mon, 19 Dec 2016 11:03:34 +0100
> Subject: [PATCH] Fix IPA CP where it forgot to add a reference in cgraph
> 
> gcc/ChangeLog:
> 
> 2016-12-19  Martin Liska  
> 
>   * cgraphclones.c (cgraph_node::create_virtual_clone):
>   Create either IPA_REF_LOAD of IPA_REF_READ depending on
>   whether new_tree is a VAR_DECL or an ADDR_EXPR.
>   * ipa-cp.c (create_specialized_node): Add reference just for
>   ADDR_EXPRs.
>   * symtab.c (symtab_node::maybe_create_reference): Remove guard
>   as it's guarded in callers.
> ---
>  gcc/cgraphclones.c | 6 +-
>  gcc/ipa-cp.c   | 3 ++-
>  gcc/symtab.c   | 2 --
>  3 files changed, 7 insertions(+), 4 deletions(-)
> 
> diff --git a/gcc/cgraphclones.c b/gcc/cgraphclones.c
> index 349892dab67..93c86e6a1cc 100644
> --- a/gcc/cgraphclones.c
> +++ b/gcc/cgraphclones.c
> @@ -624,7 +624,11 @@ cgraph_node::create_virtual_clone (vec 
> redirect_callers,
>|| in_lto_p)
>  new_node->unique_name = true;
>FOR_EACH_VEC_SAFE_ELT (tree_map, i, map)
> -new_node->maybe_create_reference (map->new_tree, IPA_REF_ADDR, NULL);
> +{
> +  ipa_ref_use use_type
> + = TREE_CODE (map->new_tree) == VAR_DECL ? IPA_REF_ADDR : IPA_REF_LOAD;

...this test should be for ADDR_EXPR here.  Or you could switch the
IPA_REF_* constants the other way round which I bet is going to have
the same effect in practice, but personally, I'd test for ADDR_EXPR.

Thanks,

Martin

Re: [PATCH] Fix IPA CP where it forgot to add a reference in cgraph

2016-12-19 Thread Jakub Jelinek 
Hi!

Just a nit, defer actual review to Honza or Richard.

On Mon, Dec 19, 2016 at 11:09:52AM +0100, Martin Liška wrote:
> +  ipa_ref_use use_type
> + = TREE_CODE (map->new_tree) == VAR_DECL ? IPA_REF_ADDR : IPA_REF_LOAD;

= VAR_P (map->new_tree) ? IPA_REF_ADDR : IPA_REF_LOAD.
please.

Jakub