[Bug other/63504] [5 Regression] Issues found by --enable-checking=valgrind

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63504

--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Feb  3 09:39:19 2015
New Revision: 220368

URL: https://gcc.gnu.org/viewcvs?rev=220368&root=gcc&view=rev
Log:
    PR other/63504
    * combine.c (reg_n_sets_max): New variable.
    (can_change_dest_mode, reg_nonzero_bits_for_combine,
    reg_num_sign_bit_copies_for_combine, get_last_value_validate,
    get_last_value): Use REG_N_SETS only on pseudos < reg_n_sets_max.
    (try_combine): Use INC_REG_N_SETS only on pseudos < reg_n_sets_max.
    (rest_of_handle_combine): Initialize reg_n_sets_max.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/combine.c