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tree-ssa-operands.c (add_vars_for_offset): Add parameter telling if the var is to be treated as points-to location. 

2007-10-28  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-operands.c (add_vars_for_offset): Add parameter
	telling if the var is to be treated as points-to location.
	(add_vars_for_bitmap): Pass true to add_vars_for_offset.
	(add_virtual_operand): Only recurse into MPTs if aliases
	is from a NMT.

From-SVN: r129704
This commit is contained in:
Richard Guenther 2007-10-28 21:39:15 +00:00 committed by Richard Biener
parent 07bd622793
commit a9077d27da
2 changed files with 20 additions and 7 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2007-10-28 Richard Guenther <rguenther@suse.de>
* tree-ssa-operands.c (add_vars_for_offset): Add parameter
telling if the var is to be treated as points-to location.
(add_vars_for_bitmap): Pass true to add_vars_for_offset.
(add_virtual_operand): Only recurse into MPTs if aliases
is from a NMT.
2007-10-28 Richard Guenther <rguenther@suse.de> 2007-10-28 Richard Guenther <rguenther@suse.de>
* tree-ssa-operands.c (add_vars_for_offset): Clean and speed up. * tree-ssa-operands.c (add_vars_for_offset): Clean and speed up.

19
gcc/tree-ssa-operands.c
View File

@ -1386,11 +1386,12 @@ access_can_touch_variable (tree ref, tree alias, HOST_WIDE_INT offset,
This is necessary because foop only actually points to foo's first This is necessary because foop only actually points to foo's first
member, so that is all the points-to set contains. However, an access member, so that is all the points-to set contains. However, an access
to foop->a may be touching some single SFT if we have created some to foop->a may be touching some single SFT if we have created some
SFT's for a structure. */ SFT's for a structure. If AS_PTO is false, just add VAR to the vops. */
static bool static bool
add_vars_for_offset (tree full_ref, tree var, HOST_WIDE_INT offset, add_vars_for_offset (tree full_ref, tree var, HOST_WIDE_INT offset,
HOST_WIDE_INT size, bool is_call_site, bool is_def) HOST_WIDE_INT size, bool is_call_site, bool is_def,
bool as_pto)
{ {
bool added = false; bool added = false;
subvar_t sv; subvar_t sv;
@ -1405,7 +1406,8 @@ add_vars_for_offset (tree full_ref, tree var, HOST_WIDE_INT offset,
return false; return false;
/* For SFTs we have to consider all subvariables of the parent var. */ /* For SFTs we have to consider all subvariables of the parent var. */
if (TREE_CODE (var) != STRUCT_FIELD_TAG) if (TREE_CODE (var) != STRUCT_FIELD_TAG
|| !as_pto)
{ {
/* If we do not know the full reference tree or if the access is /* If we do not know the full reference tree or if the access is
unspecified [0, -1], we cannot prune it. Otherwise try doing unspecified [0, -1], we cannot prune it. Otherwise try doing
@ -1465,7 +1467,7 @@ add_vars_for_bitmap (bitmap aliases, tree full_ref,
if (TREE_CODE (al) == STRUCT_FIELD_TAG) if (TREE_CODE (al) == STRUCT_FIELD_TAG)
*none_added &= !add_vars_for_offset (full_ref, al, offset, size, *none_added &= !add_vars_for_offset (full_ref, al, offset, size,
is_call_site, is_def); is_call_site, is_def, true);
} }
} }
@ -1546,12 +1548,15 @@ add_virtual_operand (tree var, stmt_ann_t s_ann, int flags,
/* We have to consider SFTs inside MPTs as possible pointed-to /* We have to consider SFTs inside MPTs as possible pointed-to
location as well because even if aliases does not contain location as well because even if aliases does not contain
a single SFT, the SFTs inside the MPT may be incomplete in a single SFT, the SFTs inside the MPT may be incomplete in
that not all aliased subvars have to be in this MPT, too. */ that not all aliased subvars have to be in this MPT, too.
if (TREE_CODE (al) == MEMORY_PARTITION_TAG) But only if we start with NMT aliases. */
if (TREE_CODE (al) == MEMORY_PARTITION_TAG
&& TREE_CODE (var) == NAME_MEMORY_TAG)
add_vars_for_bitmap (MPT_SYMBOLS (al), full_ref, offset, size, add_vars_for_bitmap (MPT_SYMBOLS (al), full_ref, offset, size,
is_call_site, flags & opf_def, &none_added); is_call_site, flags & opf_def, &none_added);
none_added &= !add_vars_for_offset (full_ref, al, offset, size, none_added &= !add_vars_for_offset (full_ref, al, offset, size,
is_call_site, flags & opf_def); is_call_site, flags & opf_def,
TREE_CODE (var) == NAME_MEMORY_TAG);
} }
if (flags & opf_def) if (flags & opf_def)