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authorRichard Guenther <rguenther@suse.de>2010-07-29 12:31:29 +0000
committerRichard Biener <rguenth@gcc.gnu.org>2010-07-29 12:31:29 +0000
commit9b638c031a7ec32d422e150f613f1ce718305a2a (patch)
treed6a0b4eca69ba92d9f1bd7793ead87989b748a15 /gcc
parent1c09321ca033a4094193fe9ce4e54e3344ac5360 (diff)
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tree.c (build_vector): Assert that the vector constant has enough elements.
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
Diffstat (limited to 'gcc')
-rw-r--r--gcc/ChangeLog6
-rw-r--r--gcc/tree.c7
2 files changed, 13 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 45155e4..44353ab 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,11 @@
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
* tree-ssa-structalias.c (get_constraint_for_component_ref):
Handle offset in DEREFs properly.
diff --git a/gcc/tree.c b/gcc/tree.c
index a33f22b..f401145 100644
--- a/gcc/tree.c
+++ b/gcc/tree.c
@@ -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));
}