common.opt (flag_ira_hoist_pressure): New.

	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.

From-SVN: r192604

1 files changed, 1 insertions, 1 deletions

diff --git a/gcc/ira.c b/gcc/ira.c
index a79a0dc..78b3f92 100644
--- a/gcc/ira.c
+++ b/gcc/ira.c
@@ -4186,7 +4186,7 @@ ira (FILE *f)
   crtl->is_leaf = leaf_function_p ();
 
   if (resize_reg_info () && flag_ira_loop_pressure)
-    ira_set_pseudo_classes (ira_dump_file);
+    ira_set_pseudo_classes (true, ira_dump_file);
 
   rebuild_p = update_equiv_regs ();