r163808 - in /trunk/gcc: ChangeLog cgraph.h gim...

[hubicka at gcc dot gnu dot org]

Author: hubicka
Date: Fri Sep  3 10:15:54 2010
New Revision: 163808

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=163808
Log:

	* cgraph.h (struct varpool_node): Add const_value_known.
	(varpool_decide_const_value_known): Declare.
	* tree-ssa-ccp.c (fold_const_aggregate_ref): Update initializer folding.
	* lto-cgraph.c (lto_output_varpool_node): Store const_value_known.
	(input_varpool_node): Restore const_value_known.
	* tree-ssa-loop-ivcanon (constant_after_peeling): Check varpool for
	initializer folding.
	* ipa.c (ipa_discover_readonly_nonaddressable_var,
	function_and_variable_visibility): Compute const_value_known.
	* gimple-fold.c (get_symbol_constant_value): Use varpool for initializer
	folding.
	* varpool.c (varpool_decide_const_value_known): New function.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/cgraph.h
    trunk/gcc/gimple-fold.c
    trunk/gcc/ipa.c
    trunk/gcc/lto-cgraph.c
    trunk/gcc/tree-ssa-ccp.c
    trunk/gcc/tree-ssa-loop-ivcanon.c
    trunk/gcc/varpool.c