cgraph: ifunc resolvers cannot be made local (PR 92697)

2019-11-28  Martin Jambor  <mjambor@suse.cz>

	PR ipa/92697
	* cgraph.c (cgraph_node_cannot_be_local_p_1): Return true for
	ifunc_resolvers.
	* symtab.c (symtab_node::dump_base): Dump ifunc_resolver flag.
	Removed trailig whitespace.

	testsuite/
	* g++.dg/ipa/pr92697.C: New.

From-SVN: r278812

gcc/ChangeLog

+2019-11-28  Martin Jambor  <mjambor@suse.cz>
+
+	PR ipa/92697
+	* cgraph.c (cgraph_node_cannot_be_local_p_1): Return true for
+	ifunc_resolvers.
+	* symtab.c (symtab_node::dump_base): Dump ifunc_resolver flag.
+	Removed trailig whitespace.
+
 2019-11-28  Jan Hubicka  <hubicka@ucw.cz>
 
 	* profile-count.h (profile_count::combine_with_ipa_count_within):

gcc/cgraph.c

@@ -2227,6 +2227,7 @@ static bool
 cgraph_node_cannot_be_local_p_1 (cgraph_node *node, void *)
 {
   return !(!node->force_output
+	   && !node->ifunc_resolver
 	   && ((DECL_COMDAT (node->decl)
 		&& !node->forced_by_abi
 		&& !node->used_from_object_file_p ()

gcc/symtab.c

@@ -914,8 +914,10 @@ symtab_node::dump_base (FILE *f)
       if (DECL_STATIC_DESTRUCTOR (decl))
 	fprintf (f, " destructor");
     }
+  if (ifunc_resolver)
+    fprintf (f, " ifunc_resolver");
   fprintf (f, "\n");
-  
+
   if (same_comdat_group)
     fprintf (f, "  Same comdat group as: %s\n",
 	     same_comdat_group->dump_asm_name ());

gcc/testsuite/ChangeLog

+2019-11-28  Martin Jambor  <mjambor@suse.cz>
+
+	PR ipa/92697
+	* g++.dg/ipa/pr92697.C: New.
+
 2019-11-28  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/92645

gcc/testsuite/g++.dg/ipa/pr92697.C

+/* { dg-do compile } */
+/* { dg-require-ifunc "" } */
+/* { dg-options "-O2 -fdump-ipa-sra" } */
+
+extern int have_avx2;
+extern int have_ssse3;
+
+namespace NTL
+{
+
+  static void randomstream_impl_init_base ()
+  {
+    __builtin_printf ("Frob1\n");
+  }
+
+  static void // __attribute__ ((target ("ssse3")))
+    randomstream_impl_init_ssse3 ()
+  {
+    __builtin_printf ("Frob2\n");
+  }
+
+  static void
+    //__attribute__ ((target ("avx2,fma,avx,pclmul,ssse3")))
+    randomstream_impl_init_avx2 ()
+  {
+    __builtin_printf ("Frob3\n");
+  }
+
+  extern "C"
+  {
+    static void (*resolve_randomstream_impl_init (void)) ()
+    {
+      if (have_avx2)
+	return &randomstream_impl_init_avx2;
+      if (have_ssse3)
+	return &randomstream_impl_init_ssse3;
+      return &randomstream_impl_init_base;
+    }
+  }
+  static void
+    __attribute__ ((ifunc ("resolve_" "randomstream_impl_init")))
+    randomstream_impl_init ();
+  void foo ()
+  {
+    randomstream_impl_init ();
+  }
+
+}
+
+
+/* { dg-final { scan-ipa-dump-not "Created new node" "sra" } } */