r114708 - in /branches/predcom/gcc: ChangeLog.p...

[rakdver@gcc.gnu.org]

Author: rakdver
Date: Fri Jun 16 07:50:41 2006
New Revision: 114708

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=114708
Log:
	* tree-ssa-loop-manip.c (determine_exit_conditions): Return a single
	step instead of the step of the unrolled loop.
	(tree_unroll_loop): Split into ...
	(tree_unroll_loop_prepare, tree_unroll_loop_finish): ... new functions.
	* tree-predcom.c (initialize_root, execute_pred_commoning_chain,
	execute_pred_commoning): Do not compute unroll factor.
	(determine_unroll_factor): New function.
	(tree_predictive_commoning_loop): Use tree_unroll_loop_prepare and
	tree_unroll_loop_finish.
	* tree-flow.h (tree_unroll_loop_prepare, tree_unroll_loop_finish):
	Declare.

	* gcc.dg/tree-ssa/predcom-1.c: Test also loops with nonconstant
	# of iterations.


Modified:
    branches/predcom/gcc/ChangeLog.predcom
    branches/predcom/gcc/testsuite/ChangeLog.predcom
    branches/predcom/gcc/testsuite/gcc.dg/tree-ssa/predcom-1.c
    branches/predcom/gcc/tree-flow.h
    branches/predcom/gcc/tree-predcom.c
    branches/predcom/gcc/tree-ssa-loop-manip.c