[Bug tree-optimization/45971] [4.6 Regression] ice in vect_update_ivs_after_vectorizer

[spop at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45971

--- Comment #11 from Sebastian Pop <spop at gcc dot gnu.org> 2010-11-10 
16:06:51 UTC ---
Author: spop
Date: Wed Nov 10 16:06:47 2010
New Revision: 166544

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=166544
Log:
Fix PR45971: do not predicate condition phi nodes that are scev analyzable.

2010-11-10  Sebastian Pop  <sebastian....@amd.com>

    PR tree-optimization/45971
    * tree-if-conv.c (predicate_scalar_phi): Do not generate a COND_EXPR
    for phi nodes analyzable by scev.

    * gcc.dg/vect/O3-pr45971.c: New.

Added:
    trunk/gcc/testsuite/gcc.dg/vect/O3-pr45971.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-if-conv.c