Add to same comdate group only if set (PR middle-end/90899)

2019-07-03  Martin Liska  <mliska@suse.cz>

	PR middle-end/90899
	* multiple_target.c (create_dispatcher_calls): Add to comdat
	group only if set for ifunc.
2019-07-03  Martin Liska  <mliska@suse.cz>

	PR middle-end/90899
	* gcc.target/i386/pr90899.c: New test.

From-SVN: r272992

gcc/ChangeLog

 2019-07-03  Martin Liska  <mliska@suse.cz>
 
+	PR middle-end/90899
+	* multiple_target.c (create_dispatcher_calls): Add to comdat
+	group only if set for ifunc.
+
+2019-07-03  Martin Liska  <mliska@suse.cz>
+
 	PR target/88056
 	* config/i386/host-mingw32.c (mingw32_gt_pch_use_address):
 	Define local_object_name in outer scope in order to handle

gcc/multiple_target.c

@@ -158,7 +158,8 @@ create_dispatcher_calls (struct cgraph_node *node)
 	    {
 	      symtab_node *source = ref->referring;
 	      source->create_reference (inode, IPA_REF_ALIAS);
-	      source->add_to_same_comdat_group (inode);
+	      if (inode->get_comdat_group ())
+		source->add_to_same_comdat_group (inode);
 	    }
 	  else
 	    gcc_unreachable ();

gcc/testsuite/ChangeLog

+2019-07-03  Martin Liska  <mliska@suse.cz>
+
+	PR middle-end/90899
+	* gcc.target/i386/pr90899.c: New test.
+
 2019-07-03  Jakub Jelinek  <jakub@redhat.com>
 
 	PR tree-optimization/91033

gcc/testsuite/gcc.target/i386/pr90899.c

+/* PR middle-end/90899 */
+/* { dg-do compile } */
+/* { dg-require-ifunc "" } */
+
+__attribute__ ((target_clones ("default", "arch=slm"))) static int f () { return 0; }
+__attribute__ ((alias ("f"))) __typeof (f) g;