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[Bug tree-optimization/54937] Invalid loop bound estimate
- From: "hubicka at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 23 Oct 2012 10:00:24 +0000
- Subject: [Bug tree-optimization/54937] Invalid loop bound estimate
- Auto-submitted: auto-generated
- References: <bug-54937-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54937
--- Comment #2 from Jan Hubicka <hubicka at gcc dot gnu.org> 2012-10-23 10:00:24 UTC ---
Author: hubicka
Date: Tue Oct 23 10:00:19 2012
New Revision: 192710
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=192710
Log:
PR middle-end/54937
* tree-ssa-loop-niter.c (record_estimate): Do not try to lower
the bound of non-is_exit statements.
(maybe_lower_iteration_bound): Do it here.
(estimate_numbers_of_iterations_loop): Call it.
* gcc.c-torture/execute/pr54937.c: New testcase.
* gcc.dg/tree-ssa/cunroll-2.c: Update.
Added:
trunk/gcc/testsuite/gcc.c-torture/execute/pr54937.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/tree-ssa/cunroll-2.c
trunk/gcc/tree-ssa-loop-niter.c