insn-notes.def (UPDATE_SJLJ_CONTEXT): New note.

	* insn-notes.def (UPDATE_SJLJ_CONTEXT): New note.
	* builtins.c (expand_builtin_update_setjmp_buf): Make global.
	(expand_stack_restore): Call record_new_stack_level.
	(expand_stack_save): Do not call do_pending_stack_adjust.
	* builtins.h (expand_builtin_update_setjmp_buf): Declare.
	* calls.c (expand_call): Call record_new_stack_level for alloca.
	* except.c (sjlj_mark_call_sites): Expand builtin_update_setjmp_buf
	wherever a NOTE_INSN_UPDATE_SJLJ_CONTEXT note is present.
	(update_sjlj_context): New global function.
	* except.h (update_sjlj_context): Declare.
	* explow.c (record_new_stack_level): New global function.
	(allocate_dynamic_stack_space): Call record_new_stack_level.
	* explow.h (record_new_stack_level): Declare.
	* final.c (final_scan_insn): Deal with NOTE_INSN_UPDATE_SJLJ_CONTEXT.
	* cfgrtl.c (duplicate_insn_chain): Likewise.

Co-Authored-By: Tristan Gingold <gingold@adacore.com>

From-SVN: r223348

1 files changed, 19 insertions, 5 deletions

diff --git a/gcc/explow.c b/gcc/explow.c
index de446a9..e7768ae 100644
--- a/gcc/explow.c
+++ b/gcc/explow.c
@@ -1096,8 +1096,8 @@ emit_stack_restore (enum save_level save_level, rtx sa)
 }
 
 /* Invoke emit_stack_save on the nonlocal_goto_save_area for the current
-   function.  This function should be called whenever we allocate or
-   deallocate dynamic stack space.  */
+   function.  This should be called whenever we allocate or deallocate
+   dynamic stack space.  */
 
 void
 update_nonlocal_goto_save_area (void)
@@ -1117,6 +1117,21 @@ update_nonlocal_goto_save_area (void)
 
   emit_stack_save (SAVE_NONLOCAL, &r_save);
 }
+
+/* Record a new stack level for the current function.  This should be called
+   whenever we allocate or deallocate dynamic stack space.  */
+
+void
+record_new_stack_level (void)
+{
+  /* Record the new stack level for nonlocal gotos.  */
+  if (cfun->nonlocal_goto_save_area)
+    update_nonlocal_goto_save_area ();
+ 
+  /* Record the new stack level for SJLJ exceptions.  */
+  if (targetm_common.except_unwind_info (&global_options) == UI_SJLJ)
+    update_sjlj_context ();
+}
 
 /* Return an rtx representing the address of an area of memory dynamically
    pushed on the stack.
@@ -1479,9 +1494,8 @@ allocate_dynamic_stack_space (rtx size, unsigned size_align,
   /* Now that we've committed to a return value, mark its alignment.  */
   mark_reg_pointer (target, required_align);
 
-  /* Record the new stack level for nonlocal gotos.  */
-  if (cfun->nonlocal_goto_save_area != 0)
-    update_nonlocal_goto_save_area ();
+  /* Record the new stack level.  */
+  record_new_stack_level ();
 
   return target;
 }