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tree-if-conv.c (struct ifc_dr): Add new tree base_predicate field. 

2015-11-30  Venkataramanan Kumar  <Venkataramanan.Kumar@amd.com>

	* tree-if-conv.c (struct ifc_dr): Add new tree
	base_predicate field.
	(hash_memrefs_baserefs_and_store_DRs_read_written_info): Hash
	base ref, DR pairs and store base_predicate for write type DRs.
	(ifcvt_memrefs_wont_trap): Guard checks with
	-ftree-loop-if-convert-stores flag.

From-SVN: r231057
This commit is contained in:
Venkataramanan Kumar 2015-11-30 07:59:54 +00:00 committed by Venkataramanan Kumar
parent efb72c29ea
commit 6b8320bc8b
2 changed files with 31 additions and 16 deletions
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9
gcc/ChangeLog
View File

@ -1,3 +1,12 @@
2015-11-30 Venkataramanan Kumar <Venkataramanan.Kumar@amd.com>
* tree-if-conv.c (struct ifc_dr): Add new tree
base_predicate field.
(hash_memrefs_baserefs_and_store_DRs_read_written_info): Hash
base ref, DR pairs and store base_predicate for write type DRs.
(ifcvt_memrefs_wont_trap): Guard checks with
-ftree-loop-if-convert-stores flag.
2015-11-29 Jan Hubicka <hubicka@ucw.cz>
* cgraph.c (cgraph_node::make_local): No name is unique during

38
gcc/tree-if-conv.c
View File

@ -589,6 +589,8 @@ struct ifc_dr {
int rw_unconditionally;
tree predicate;
tree base_predicate;
};
#define IFC_DR(DR) ((struct ifc_dr *) (DR)->aux)
@ -636,22 +638,24 @@ hash_memrefs_baserefs_and_store_DRs_read_written_info (data_reference_p a)
if (is_true_predicate (IFC_DR (*master_dr)->predicate))
DR_RW_UNCONDITIONALLY (*master_dr) = 1;
base_master_dr = &baseref_DR_map->get_or_insert (base_ref,&exist2);
if (!exist2)
if (DR_IS_WRITE (a))
{
IFC_DR (a)->predicate = ca;
*base_master_dr = a;
}
else
IFC_DR (*base_master_dr)->predicate
= fold_or_predicates
(EXPR_LOCATION (IFC_DR (*base_master_dr)->predicate),
ca, IFC_DR (*base_master_dr)->predicate);
base_master_dr = &baseref_DR_map->get_or_insert (base_ref, &exist2);
if (DR_IS_WRITE (a)
&& (is_true_predicate (IFC_DR (*base_master_dr)->predicate)))
DR_WRITTEN_AT_LEAST_ONCE (*base_master_dr) = 1;
if (!exist2)
{
IFC_DR (a)->base_predicate = ca;
*base_master_dr = a;
}
else
IFC_DR (*base_master_dr)->base_predicate
= fold_or_predicates
(EXPR_LOCATION (IFC_DR (*base_master_dr)->base_predicate),
ca, IFC_DR (*base_master_dr)->base_predicate);
if (is_true_predicate (IFC_DR (*base_master_dr)->base_predicate))
DR_WRITTEN_AT_LEAST_ONCE (*base_master_dr) = 1;
}
}
/* Return true when the memory references of STMT won't trap in the
@ -698,17 +702,19 @@ ifcvt_memrefs_wont_trap (gimple *stmt, vec<data_reference_p> drs)
master_dr = ref_DR_map->get (ref_base_a);
base_master_dr = baseref_DR_map->get (base);
gcc_assert (master_dr != NULL && base_master_dr != NULL);
gcc_assert (master_dr != NULL);
if (DR_RW_UNCONDITIONALLY (*master_dr) == 1)
{
if (DR_WRITTEN_AT_LEAST_ONCE (*base_master_dr) == 1)
if (base_master_dr
&& DR_WRITTEN_AT_LEAST_ONCE (*base_master_dr) == 1)
return true;
else
{
tree base_tree = get_base_address (DR_REF (a));
if (DECL_P (base_tree)
&& decl_binds_to_current_def_p (base_tree)
&& flag_tree_loop_if_convert_stores
&& !TREE_READONLY (base_tree))
return true;
}