[Bug rtl-optimization/63340] [5.0 regression] FAIL: gcc.dg/atomic/c11-atomic-exec-2.c -O2 execution test

[rsandifo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63340

--- Comment #6 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> 
---
Author: rsandifo
Date: Wed Oct 29 10:02:33 2014
New Revision: 216829

URL: https://gcc.gnu.org/viewcvs?rev=216829&root=gcc&view=rev
Log:
gcc/
    PR rtl-optimization/63340 (part 2)
    * rtl.h (invalid_mode_change_p): Delete.
    (valid_mode_changes_for_regno): New function.
    * reginfo.c (invalid_mode_change_p): Delete.
    (valid_mode_changes_for_regno): New function.
    * ira-costs.c (setup_regno_cost_classes_by_aclass): Restrict the
    classes to registers that are allowed by valid_mode_changes_for_regno.
    (setup_regno_cost_classes_by_mode): Likewise.
    (print_allocno_costs): Remove invalid_mode_change_p test.
    (print_pseudo_costs, find_costs_and_classes): Likewise.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ira-costs.c
    trunk/gcc/reginfo.c
    trunk/gcc/rtl.h