[Bug tree-optimization/54146] Very slow compile with attribute((flatten))

[matz at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54146

--- Comment #15 from Michael Matz <matz at gcc dot gnu.org> 2012-08-03 14:43:14 
UTC ---
Author: matz
Date: Fri Aug  3 14:43:09 2012
New Revision: 190126

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=190126
Log:
    PR tree-optimization/54146
    * cfgexpand.c (add_scope_conflicts_1): Use bitmap_ior_into.
    (add_scope_conflicts): Iterate in RPO order.
    (add_stack_protection_conflicts): Iterate over the other triangle.
    (fini_vars_expansion): Clear stack_vars_sorted.

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