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tree-into-ssa.c (maybe_register_def): If stmt ends the bb, insert the debug stmt on the single non-EH edge from the stmt. 

* tree-into-ssa.c (maybe_register_def): If stmt ends the bb,
	insert the debug stmt on the single non-EH edge from the stmt.

From-SVN: r156177
This commit is contained in:
Jakub Jelinek 2010-01-22 20:20:51 +01:00 committed by Jakub Jelinek
parent 002cda0a8b
commit c47987fa5b
2 changed files with 27 additions and 2 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2010-01-22 Jakub Jelinek <jakub@redhat.com>
* tree-into-ssa.c (maybe_register_def): If stmt ends the bb,
insert the debug stmt on the single non-EH edge from the stmt.
2010-01-22 Richard Henderson <rth@redhat.com>
PR tree-opt/42833

24
gcc/tree-into-ssa.c
View File

@ -1,5 +1,5 @@
/* Rewrite a program in Normal form into SSA.
Copyright (C) 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009
Copyright (C) 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
Contributed by Diego Novillo <dnovillo@redhat.com>
@ -1858,7 +1858,27 @@ maybe_register_def (def_operand_p def_p, gimple stmt,
if (tracked_var)
{
gimple note = gimple_build_debug_bind (tracked_var, def, stmt);
gsi_insert_after (&gsi, note, GSI_SAME_STMT);
/* If stmt ends the bb, insert the debug stmt on the single
non-EH edge from the stmt. */
if (gsi_one_before_end_p (gsi) && stmt_ends_bb_p (stmt))
{
basic_block bb = gsi_bb (gsi);
edge_iterator ei;
edge e, ef = NULL;
FOR_EACH_EDGE (e, ei, bb->succs)
if (!(e->flags & EDGE_EH))
{
gcc_assert (!ef);
ef = e;
}
gcc_assert (ef
&& single_pred_p (ef->dest)
&& !phi_nodes (ef->dest)
&& ef->dest != EXIT_BLOCK_PTR);
gsi_insert_on_edge_immediate (ef, note);
}
else
gsi_insert_after (&gsi, note, GSI_SAME_STMT);
}
}