r123919 - in /trunk/gcc: ChangeLog cfgloop.h cf...

[rakdver@gcc.gnu.org]

Author: rakdver
Date: Tue Apr 17 17:42:29 2007
New Revision: 123919

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=123919
Log:
	PR rtl-optimization/31360
	* cfgloopanal.c (target_small_cost, target_pres_cost): Removed.
	(target_reg_cost): New.
	(init_set_costs): Initialize target_reg_cost.  Add comments
	regarding the rationale of the costs.
	(global_cost_for_size): Renamed to...
	(estimate_reg_pressure_cost): ... and simplify.  Decrease importance
	of register pressure.
	* tree-ssa-loop-ivopts.c (ivopts_global_cost_for_size): Use
	estimate_reg_pressure_cost.  Add number of ivs.
	(determine_set_costs): Dump target_reg_cost.
	* loop-invariant.c (gain_for_invariant):  Use
	estimate_reg_pressure_cost.  Removed n_inv_uses argument.
	(best_gain_for_invariant, find_invariants_to_move): Remove
	n_inv_uses.
	* cfgloop.h (target_small_cost, target_pres_cost): Removed.
	(target_reg_cost): Declare.
	(global_cost_for_size): Declaration removed.
	(estimate_reg_pressure_cost): Declare.

	* gcc.dg/loop-7.c: New test.


Added:
    trunk/gcc/testsuite/gcc.dg/loop-7.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/cfgloop.h
    trunk/gcc/cfgloopanal.c
    trunk/gcc/loop-invariant.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-loop-ivopts.c