File gcc9-pr91763.patch of Package Gcc9

2019-09-18  Richard Biener  <rguenther@suse.de>

PR lto/91763
	* lto-streamer-in.c (input_eh_regions): Move EH init to
	lto_materialize_function.
	* tree-streamer-in.c (lto_input_ts_function_decl_tree_pointers):
	Likewise.

lto/
	* lto.c (lto_materialize_function): Initialize EH by looking
	at the function personality and flag_exceptions setting.

Index: gcc/lto-streamer-in.c
===================================================================
--- gcc/lto-streamer-in.c	(revision 275800)
+++ gcc/lto-streamer-in.c	(working copy)
@@ -615,11 +615,6 @@ input_eh_regions (struct lto_input_block
 
   lto_tag_check_range (tag, LTO_eh_table, LTO_eh_table);
 
-  /* If the file contains EH regions, then it was compiled with
-     -fexceptions.  In that case, initialize the backend EH
-     machinery.  */
-  lto_init_eh ();
-
   gcc_assert (fn->eh);
 
   root_region = streamer_read_hwi (ib);
Index: gcc/tree-streamer-in.c
===================================================================
--- gcc/tree-streamer-in.c	(revision 275800)
+++ gcc/tree-streamer-in.c	(working copy)
@@ -800,12 +800,6 @@ lto_input_ts_function_decl_tree_pointers
       }
   }
 #endif
-
-  /* If the file contains a function with an EH personality set,
-     then it was compiled with -fexceptions.  In that case, initialize
-     the backend EH machinery.  */
-  if (DECL_FUNCTION_PERSONALITY (expr))
-    lto_init_eh ();
 }
 
 
Index: gcc/lto/lto.c
===================================================================
--- gcc/lto/lto.c	(revision 275800)
+++ gcc/lto/lto.c	(working copy)
@@ -218,6 +218,12 @@ lto_materialize_function (struct cgraph_
 	return;
       if (DECL_FUNCTION_PERSONALITY (decl) && !first_personality_decl)
 	first_personality_decl = DECL_FUNCTION_PERSONALITY (decl);
+      /* If the file contains a function with a language specific EH
+	 personality set or with EH enabled initialize the backend EH
+	 machinery.  */
+      if (DECL_FUNCTION_PERSONALITY (decl)
+	  || opt_for_fn (decl, flag_exceptions))
+	lto_init_eh ();
     }
 
   /* Let the middle end know about the function.  */