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r111300 - in /trunk/gcc: ChangeLog passes.c tre...


Author: dberlin
Date: Mon Feb 20 13:38:01 2006
New Revision: 111300

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=111300
Log:
2006-02-20  Daniel Berlin  <dberlin@dberlin.org>

	* tree.h (struct tree_memory_tag): Add is_used_alone member.
	(TMT_USED_ALONE): New macro.
	* tree-pass.h (PROP_tmt_usage): New property.
	(TODO_update_tmt_usage): New todo.
	* tree-ssa-alias.c (updating_used_alone): New variable.
	(recalculate_used_alone): New function.	  
	(compute_may_aliases): Set updating_used_alone, call
	recalculate_used_alone. 
	* tree-sra.c (pass_sra): Note that this pass destroys
	PROP_tmt_usage, and add TODO_update_tmt_usage.
	* tree-ssa-forwprop.c (pass_forwprop): Ditto.
	* tree-flow.h (updating_used_alone): Prototype.
	(recalculate_used_alone): Ditto.
	* passes.c (execute_todo): Add code to set updating_used_alone,
	and call recalculate.
	* tree-ssa-operands.c (add_virtual_operand): Only append bare def
	for clobber if used alone, and add assert to verify used_alone
	status.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/passes.c
    trunk/gcc/tree-flow.h
    trunk/gcc/tree-pass.h
    trunk/gcc/tree-sra.c
    trunk/gcc/tree-ssa-alias.c
    trunk/gcc/tree-ssa-forwprop.c
    trunk/gcc/tree-ssa-operands.c
    trunk/gcc/tree.h


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