[Bug tree-optimization/47427] [4.6 Regression] ICE in process_constraint, at tree-ssa-structalias.c:2901

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

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47427

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-01-25 12:01:57 UTC ---
Author: jakub
Date: Tue Jan 25 12:01:54 2011
New Revision: 169226

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=169226
Log:
    PR tree-optimization/47427
    PR tree-optimization/47428
    * tree-ssa-copyrename.c (copy_rename_partition_coalesce): Don't
    coalesce if the new root var would be TREE_READONLY.

    * gcc.c-torture/compile/pr47427.c: New test.
    * gcc.c-torture/compile/pr47428.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/compile/pr47427.c
    trunk/gcc/testsuite/gcc.c-torture/compile/pr47428.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-copyrename.c