r192604 - in /trunk/gcc: ChangeLog common.opt d...

[amker at gcc dot gnu dot org]

Author: amker
Date: Fri Oct 19 05:42:24 2012
New Revision: 192604

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=192604
Log:
	gcc/ChangeLog
	* common.opt (flag_ira_hoist_pressure): New.
	* doc/invoke.texi (-fira-hoist-pressure): Describe.
	* ira-costs.c (ira_set_pseudo_classes): New parameter.
	* ira.h: Update copyright dates.
	(ira_set_pseudo_classes): Update prototype.
	* haifa-sched.c (sched_init): Update call.
	* ira.c (ira): Update call.
	* regmove.c: Update copyright dates.
	(regmove_optimize): Update call.
	* loop-invariant.c: Update copyright dates.
	(move_loop_invariants): Update call.
	* gcse.c: (struct bb_data): New structure.
	(BB_DATA): New macro.
	(curr_bb, curr_reg_pressure): New static variables.
	(should_hoist_expr_to_dom): Rename from hoist_expr_reaches_here_p.
	Change parameter expr_index to expr.
	New parameters pressure_class, nregs and hoisted_bbs.
	Use reg pressure to determine the distance expr can be hoisted.
	(hoist_code): Use reg pressure to direct the hoist process.
	(get_regno_pressure_class, get_pressure_class_and_nregs)
	(change_pressure, calculate_bb_reg_pressure): New.
	(one_code_hoisting_pass): Calculate register pressure. Allocate
	and free data.

	gcc/testsuite/ChangeLog
	* testsuite/gcc.dg/hoist-register-pressure.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/hoist-register-pressure.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/common.opt
    trunk/gcc/doc/invoke.texi
    trunk/gcc/gcse.c
    trunk/gcc/haifa-sched.c
    trunk/gcc/ira-costs.c
    trunk/gcc/ira.c
    trunk/gcc/ira.h
    trunk/gcc/loop-invariant.c
    trunk/gcc/regmove.c
    trunk/gcc/testsuite/ChangeLog