r117906 - in /branches/mem-ssa/gcc: ChangeLog.m...

[dnovillo@gcc.gnu.org]

Author: dnovillo
Date: Fri Oct 20 16:23:55 2006
New Revision: 117906

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=117906
Log:

	* tree-into-ssa.c (prepare_block_for_update): If a factored
	PHI node is now completely unfactored, add it to the list of
	unfactored PHI nodes to process after renaming.
	(replace_stale_ssa_names): Handle stale SSA names that come
	from PHI nodes.
	Update SSA_NAME_OCCURS_IN_ABNORMAL_PHI for the new name if
	necessary.
	(fixup_unfactored_phis): Remove unfactored PHI nodes that end
	up with no factored symbols.
	Convert to regular memory PHI nodes those factored PHI nodes
	that end up factoring a single symbol.
	(update_ssa): Call fixup_unfactored_phis before
	replace_stale_ssa_names.
	* tree-phinodes.c (create_factored_phi_node): Do not allow
	empty symbol sets.
	* tree-ssa.c (verify_ssa_name): Remove #if0 code.
	(verify_phi_args): Check that every memory PHI has a set of
	symbols.
	Check that factored PHI nodes factor more than one symbol.
	* tree-cfg.c (bsi_remove): Always call delete_loads_and_stores.
	(bsi_replace): Likewise.
	* tree-ssa-operands.c (dump_immediate_uses_for): Add
	TDF_MEMSYMS when dumping memory statements.


Modified:
    branches/mem-ssa/gcc/ChangeLog.mem-ssa
    branches/mem-ssa/gcc/tree-cfg.c
    branches/mem-ssa/gcc/tree-into-ssa.c
    branches/mem-ssa/gcc/tree-phinodes.c
    branches/mem-ssa/gcc/tree-ssa-operands.c
    branches/mem-ssa/gcc/tree-ssa.c