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tree.c (build_vector): Assert that the vector constant has enough elements.

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2010-07-29  Richard Guenther  <rguenther@suse.de>

	* tree.c (build_vector): Assert that the vector constant
	has enough elements.
	(build_vector_from_ctor): Pad with trailing zeros.

From-SVN: r162677
This commit is contained in:
Richard Guenther 2010-07-29 12:31:29 +00:00 • committed by Richard Biener
parent 1c09321ca0
commit 9b638c031a
2 changed files with 13 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2010-07-29 Richard Guenther <rguenther@suse.de>
* tree.c (build_vector): Assert that the vector constant
has enough elements.
(build_vector_from_ctor): Pad with trailing zeros.
2010-07-29 Richard Guenther <rguenther@suse.de>
PR tree-optimization/45120

7
gcc/tree.c
View file

@ -1318,6 +1318,7 @@ build_vector (tree type, tree vals)
tree v = make_node (VECTOR_CST);
int over = 0;
tree link;
unsigned cnt = 0;
TREE_VECTOR_CST_ELTS (v) = vals;
TREE_TYPE (v) = type;
@ -1326,6 +1327,7 @@ build_vector (tree type, tree vals)
for (link = vals; link; link = TREE_CHAIN (link))
{
tree value = TREE_VALUE (link);
cnt++;
/* Don't crash if we get an address constant. */
if (!CONSTANT_CLASS_P (value))
@ -1334,6 +1336,8 @@ build_vector (tree type, tree vals)
over |= TREE_OVERFLOW (value);
}
gcc_assert (cnt == TYPE_VECTOR_SUBPARTS (type));
TREE_OVERFLOW (v) = over;
return v;
}
@ -1350,6 +1354,9 @@ build_vector_from_ctor (tree type, VEC(constructor_elt,gc) *v)
FOR_EACH_CONSTRUCTOR_VALUE (v, idx, value)
list = tree_cons (NULL_TREE, value, list);
for (; idx < TYPE_VECTOR_SUBPARTS (type); ++idx)
list = tree_cons (NULL_TREE,
fold_convert (TREE_TYPE (type), integer_zero_node), list);
return build_vector (type, nreverse (list));
}