tree-optimization/109596 - wrong debug stmt move by copyheader

The following fixes an omission in r14-162-gcda246f8b421ba causing
wrong-debug and a bunch of guality regressions.

	PR tree-optimization/109596
	* tree-ssa-loop-ch.cc (ch_base::copy_headers): Propagate
	debug stmts to nonexit->dest rather than exit->dest.

diff --git a/gcc/tree-ssa-loop-ch.cc b/gcc/tree-ssa-loop-ch.cc
index 1f0033be4c43f920665e7969e801b47feffe660a..b7ef485c4cc8556f1b7e7983c64f498b5c5ba728 100644 (file)
--- a/gcc/tree-ssa-loop-ch.cc
+++ b/gcc/tree-ssa-loop-ch.cc
@@ -957,7 +957,7 @@ ch_base::copy_headers (function *fun)
 
       edge entry = loop_preheader_edge (loop);
 
-      propagate_threaded_block_debug_into (exit->dest, entry->dest);
+      propagate_threaded_block_debug_into (nonexit->dest, entry->dest);
       if (!gimple_duplicate_seme_region (entry, exit, bbs, n_bbs, copied_bbs,
                                         true))
        {