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[Bug tree-optimization/61743] [5 Regression] Complete unroll is not happened for loops with short upper bound


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


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