The optimization to expand uniform boolean vectors by sign-extension
works only for dense masks but it failed to check that.
PR middle-end/112740
* expr.cc (store_constructor): Check the integer vector
mask has a single bit per element before using sign-extension
to expand an uniform vector.
* gcc.dg/pr112740.c: New testcase.
break;
}
/* Use sign-extension for uniform boolean vectors with
- integer modes. Effectively "vec_duplicate" for bitmasks. */
- if (!TREE_SIDE_EFFECTS (exp)
+ integer modes and single-bit mask entries.
+ Effectively "vec_duplicate" for bitmasks. */
+ if (elt_size == 1
+ && !TREE_SIDE_EFFECTS (exp)
&& VECTOR_BOOLEAN_TYPE_P (type)
- && SCALAR_INT_MODE_P (mode)
+ && SCALAR_INT_MODE_P (TYPE_MODE (type))
&& (elt = uniform_vector_p (exp))
&& !VECTOR_TYPE_P (TREE_TYPE (elt)))
{
--- /dev/null
+/* { dg-do run { target { int128 } } } */
+/* { dg-options "" } */
+
+typedef unsigned __int128 __attribute__((__vector_size__ (16))) V;
+
+V
+foo (unsigned c, V v)
+{
+ return (V) (c <= v) == 0;
+}
+
+int
+main (void)
+{
+ V x = foo (0, (V) { });
+ if (x[0])
+ __builtin_abort ();
+ return 0;
+}