Call free_dominance_info when transformed in DCE (PR rtl-optimization/89242).

2019-02-14  Martin Liska  <mliska@suse.cz>

	PR rtl-optimization/89242
	* dce.c (delete_unmarked_insns): Call free_dominance_info we
	process a transformation.
2019-02-14  Martin Liska  <mliska@suse.cz>

	PR rtl-optimization/89242
	* g++.dg/pr89242.C: New test.

From-SVN: r268873

1 files changed, 1 insertions, 0 deletions

diff --git a/gcc/dce.c b/gcc/dce.c
index cb18e815..8fb109c 100644
--- a/gcc/dce.c
+++ b/gcc/dce.c
@@ -652,6 +652,7 @@ delete_unmarked_insns (void)
     {
       gcc_assert (can_alter_cfg);
       delete_unreachable_blocks ();
+      free_dominance_info (CDI_DOMINATORS);
     }
 }