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tree-sra.c (generate_element_init_1): Deal with NULL constructor element index.

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2008-08-18  Richard Guenther  <rguenther@suse.de>

	* tree-sra.c (generate_element_init_1): Deal with NULL constructor
	element index.
	(scalarize_init): If we failed to generate some initializers
	do not generate zeros for not instantiated members.  Instead
	rely on the copy out.
	* tree-ssa-operands.c (get_addr_dereference_operands): Warn
	about missing flow-sensitive alias info only if we have
	aliases computed.

From-SVN: r139188
This commit is contained in:
Richard Guenther 2008-08-18 08:40:32 +00:00 • committed by Richard Biener
parent 46102bbfb9
commit 400196f17b
3 changed files with 26 additions and 6 deletions
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11
gcc/ChangeLog
View file

@ -1,3 +1,14 @@
2008-08-18 Richard Guenther <rguenther@suse.de>
* tree-sra.c (generate_element_init_1): Deal with NULL constructor
element index.
(scalarize_init): If we failed to generate some initializers
do not generate zeros for not instantiated members. Instead
rely on the copy out.
* tree-ssa-operands.c (get_addr_dereference_operands): Warn
about missing flow-sensitive alias info only if we have
aliases computed.
2008-08-17 Nick Clifton <nickc@redhat.com>
* doc/extend.texi (Function Attributes): Fix typo in description

18
gcc/tree-sra.c
View file

@ -2779,6 +2779,12 @@ generate_element_init_1 (struct sra_elt *elt, tree init, gimple_seq *seq_p)
case CONSTRUCTOR:
FOR_EACH_CONSTRUCTOR_ELT (CONSTRUCTOR_ELTS (init), idx, purpose, value)
{
/* Array constructors are routinely created with NULL indices. */
if (purpose == NULL_TREE)
{
result = false;
break;
}
if (TREE_CODE (purpose) == RANGE_EXPR)
{
tree lower = TREE_OPERAND (purpose, 0);
@ -3404,11 +3410,6 @@ scalarize_init (struct sra_elt *lhs_elt, tree rhs, gimple_stmt_iterator *gsi)
result = generate_element_init (lhs_elt, rhs, &init_seq);
}
/* CONSTRUCTOR is defined such that any member not mentioned is assigned
a zero value. Initialize the rest of the instantiated elements. */
generate_element_zero (lhs_elt, &seq);
gimple_seq_add_seq (&seq, init_seq);
if (!result)
{
/* If we failed to convert the entire initializer, then we must
@ -3423,6 +3424,13 @@ scalarize_init (struct sra_elt *lhs_elt, tree rhs, gimple_stmt_iterator *gsi)
gimple_seq_add_seq (&seq0, seq);
seq = seq0;
}
else
{
/* CONSTRUCTOR is defined such that any member not mentioned is assigned
a zero value. Initialize the rest of the instantiated elements. */
generate_element_zero (lhs_elt, &seq);
gimple_seq_add_seq (&seq, init_seq);
}
if (lhs_elt->use_block_copy || !result)
{

3
gcc/tree-ssa-operands.c
View file

@ -1504,7 +1504,8 @@ get_addr_dereference_operands (gimple stmt, tree *addr, int flags,
&& TREE_CODE (ptr) == SSA_NAME
&& (pi == NULL
|| (pi->name_mem_tag == NULL_TREE
&& !pi->pt_anything)))
&& !pi->pt_anything))
&& gimple_aliases_computed_p (cfun))
{
fprintf (dump_file,
"NOTE: no flow-sensitive alias info for ");