[Bug tree-optimization/55281] [4.8 Regression] ICE in build_int_cst_wide, at tree.c:1217 (with Ofast, ok with O3)

["jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55281

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-11-13 07:25:41 UTC ---
Author: jakub
Date: Tue Nov 13 07:25:36 2012
New Revision: 193471

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=193471
Log:
    PR tree-optimization/55281
    * tree-vect-generic.c (expand_vector_condition): Accept any
    is_gimple_val rather than just SSA_NAME if not COMPARISON_CLASS_P.
    * fold-const.c (fold_ternary_loc): Fold VEC_COND_EXPR if arg0 is
    either integer_all_onesp or integer_zerop.
    * tree-vect-stmts.c (vectorizable_condition): Build the condition
    using corresponding vector integer type instead of vectype.

    * gcc.dg/vect/fast-math-pr55281.c: New test.
    * g++.dg/opt/pr55281.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/opt/pr55281.C
    trunk/gcc/testsuite/gcc.dg/vect/fast-math-pr55281.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-generic.c
    trunk/gcc/tree-vect-stmts.c