r142202 - in /branches/alias-improvements/gcc: ...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Tue Nov 25 20:27:44 2008
New Revision: 142202

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=142202
Log:
2008-11-25  Richard Guenther  <rguenther@suse.de>

	* tree-data-ref.c (dr_may_alias_p): Use the alias-oracle.

	* tree-tailcall.c (tree_optimize_tail_calls_1): Also split the
	edge from the entry block if we have degenerate PHI nodes in
	the first basic block.

	* gimple.c (gimple_set_bb): Fix off-by-one error.
	* tree-cfg.c (move_block_to_fn): Likewise.

	PR tree-optimization/37869
	* tree-ssa-structalias.c (struct variable_info): Add
	is_nonpointer_var flag.
	(new_var_info): Clear it.
	(perform_var_substitution): Set it.
	(find_what_p_points_to): Use it.

Modified:
    branches/alias-improvements/gcc/ChangeLog.alias
    branches/alias-improvements/gcc/gimple.c
    branches/alias-improvements/gcc/tree-cfg.c
    branches/alias-improvements/gcc/tree-data-ref.c
    branches/alias-improvements/gcc/tree-ssa-structalias.c
    branches/alias-improvements/gcc/tree-tailcall.c