re PR target/69421 (ICE in maybe_legitimize_operand, at optabs.c:6888 with -O3)

gcc/

	PR target/69421
	* tree-vect-stmts.c (vectorizable_condition): Check vectype
	of operands is compatible with a statement vectype.

gcc/testsuite/

	PR target/69421
	* gcc.dg/pr69421.c: New test.

From-SVN: r232792

gcc/ChangeLog

+2016-01-25  Ilya Enkovich  <enkovich.gnu@gmail.com>
+
+	PR target/69421
+	* tree-vect-stmts.c (vectorizable_condition): Check vectype
+	of operands is compatible with a statement vectype.
+
 2016-01-25  Eric Botcazou  <ebotcazou@adacore.com>
 
 	* doc/extend.texi (scalar_storage_order type attribute): Fix typo and

gcc/testsuite/ChangeLog

+2016-01-25  Ilya Enkovich  <enkovich.gnu@gmail.com>
+
+	PR target/69421
+	* gcc.dg/pr69421.c: New test.
+
 2016-01-25  Bilyan Borisov  <bilyan.borisov@arm.com>
 
 	* gcc.target/aarch64/simd/vcvt_s64_f64_1.c: New.

gcc/testsuite/gcc.dg/pr69421.c

+/* { dg-do compile } */
+/* { dg-options "-O3" } */
+
+struct A { double a; };
+double a;
+
+void
+foo (_Bool *x)
+{
+  long i;
+  for (i = 0; i < 64; i++)
+    {
+      struct A c;
+      x[i] = c.a || a;
+    }
+}

gcc/tree-vect-stmts.c

@@ -7528,6 +7528,7 @@ vectorizable_condition (gimple *stmt, gimple_stmt_iterator *gsi,
 
   tree vectype = STMT_VINFO_VECTYPE (stmt_info);
   int nunits = TYPE_VECTOR_SUBPARTS (vectype);
+  tree vectype1 = NULL_TREE, vectype2 = NULL_TREE;
 
   if (slp_node || PURE_SLP_STMT (stmt_info))
     ncopies = 1;
@@ -7547,9 +7548,17 @@ vectorizable_condition (gimple *stmt, gimple_stmt_iterator *gsi,
     return false;
 
   gimple *def_stmt;
-  if (!vect_is_simple_use (then_clause, stmt_info->vinfo, &def_stmt, &dt))
+  if (!vect_is_simple_use (then_clause, stmt_info->vinfo, &def_stmt, &dt,
+			   &vectype1))
+    return false;
+  if (!vect_is_simple_use (else_clause, stmt_info->vinfo, &def_stmt, &dt,
+			   &vectype2))
     return false;
-  if (!vect_is_simple_use (else_clause, stmt_info->vinfo, &def_stmt, &dt))
+
+  if (vectype1 && !useless_type_conversion_p (vectype, vectype1))
+    return false;
+
+  if (vectype2 && !useless_type_conversion_p (vectype, vectype2))
     return false;
 
   masked = !COMPARISON_CLASS_P (cond_expr);