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[Bug tree-optimization/61743] [5 Regression] Complete unroll is not happened for loops with short upper bound
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 15 Jan 2015 15:02:44 +0000
- Subject: [Bug tree-optimization/61743] [5 Regression] Complete unroll is not happened for loops with short upper bound
- Auto-submitted: auto-generated
- References: <bug-61743-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61743
--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Jan 15 15:02:11 2015
New Revision: 219662
URL: https://gcc.gnu.org/viewcvs?rev=219662&root=gcc&view=rev
Log:
2015-01-15 Richard Biener <rguenther@suse.de>
PR tree-optimization/61743
* tree-ssa-pre.c (insert_into_preds_of_block): Preserve range
information on PHIs for some simple cases.
* gcc.dg/tree-ssa/pr61743-1.c: New testcase.
* gcc.dg/tree-ssa/pr61743-2.c: Likewise.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr61743-1.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr61743-2.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-pre.c