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[Bug middle-end/49946] Thread jumps confuse loop unrolling
- From: "izamyatin at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 8 Aug 2011 11:35:35 +0000
- Subject: [Bug middle-end/49946] Thread jumps confuse loop unrolling
- Auto-submitted: auto-generated
- References: <bug-49946-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49946
--- Comment #2 from Igor Zamyatin <izamyatin at gmail dot com> 2011-08-08 11:35:32 UTC ---
cunrolli does not handle the loop in the testcase because of the condition "ul
== UL_NO_GROWTH && unr_insns > ninsns" in try_unroll_loop_completely. Meanwhile
may_increase_size is true in tree_unroll_loops_completely.