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[Bug tree-optimization/50908] [4.7 Regression] building emacs-23.3; gives msg: indent.c:1140:1: internal compiler error: in verify_dominators, at dominance.c:1041
- From: "vries at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 31 Oct 2011 09:42:11 +0000
- Subject: [Bug tree-optimization/50908] [4.7 Regression] building emacs-23.3; gives msg: indent.c:1140:1: internal compiler error: in verify_dominators, at dominance.c:1041
- Auto-submitted: auto-generated
- References: <bug-50908-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50908
--- Comment #3 from vries at gcc dot gnu.org 2011-10-31 09:42:11 UTC ---
Created attachment 25671
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25671
tentative patch
2011-10-31 Tom de Vries <tom@codesourcery.com>
PR tree-optimization/50908
* tree-ssa-tail-merge.c (update_vuses): Now that edges are removed
before update_vuses, test for 1 predecessor rather than two.
(delete_block_update_dominator_info): New function, part of it factored
out of ...
(replace_block_by): Use delete_block_update_dominator_info. Call
update_vuses after deleting bb1 and updating dominator info, instead of
before.