re PR target/85508 (runtime error in config/i386/i386.c)

	PR target/85508
	* config/i386/i386.c (ix86_expand_vector_init_one_var): Use UINTVAL
	instead of INTVAL when shifting x left.

	* gcc.target/i386/pr85508.c: New test.

From-SVN: r259594

gcc/ChangeLog

+2018-04-24  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/85508
+	* config/i386/i386.c (ix86_expand_vector_init_one_var): Use UINTVAL
+	instead of INTVAL when shifting x left.
+
 2018-04-24  Andreas Krebbel  <krebbel@linux.ibm.com>
 
 	PR tree-optimization/85478

gcc/config/i386/i386.c

@@ -43194,7 +43194,7 @@ ix86_expand_vector_init_one_var (bool mmx_ok, machine_mode mode,
       else
 	{
 	  var = convert_modes (HImode, QImode, var, true);
-	  x = gen_int_mode (INTVAL (x) << 8, HImode);
+	  x = gen_int_mode (UINTVAL (x) << 8, HImode);
 	}
       if (x != const0_rtx)
 	var = expand_simple_binop (HImode, IOR, var, x, var,

gcc/testsuite/ChangeLog

+2018-04-24  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/85508
+	* gcc.target/i386/pr85508.c: New test.
+
 2018-04-24  Andreas Krebbel  <krebbel@linux.ibm.com>
 
 	PR tree-optimization/85478

gcc/testsuite/gcc.target/i386/pr85508.c

+/* PR target/85508 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -msse2" } */
+
+typedef signed char V __attribute__((vector_size (16)));
+signed char c;
+
+V
+foo (void)
+{
+  return (V) { c, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 };
+}