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Cleanup CFG after profile read/instrumentation
- From: Jan Hubicka <hubicka at ucw dot cz>
- To: gcc-patches at gcc dot gnu dot org
- Date: Tue, 3 Sep 2013 00:53:58 +0200
- Subject: Cleanup CFG after profile read/instrumentation
- Authentication-results: sourceware.org; auth=none
Hi,
reading profile/instrumenting breaks basic blocks and introduces fake edges.
The broken basic blocks are not re-merged until after LTO streaming that is
wasteful. Fixed thus.
Profiledbotostrapped/regtsted ppc64-linux, comitted.
Index: tree-profile.c
===================================================================
--- tree-profile.c (revision 202185)
+++ tree-profile.c (working copy)
@@ -598,6 +598,8 @@ tree_profiling (void)
}
}
+ /* re-merge split blocks. */
+ cleanup_tree_cfg ();
update_ssa (TODO_update_ssa);
rebuild_cgraph_edges ();