lra-assigns.c (find_hard_regno_for): Use lra_reg_val_equal_p to check the register content is equal or not.

2013-04-23  Shiva Chen  <shiva0217@gmail.com>

        * lra-assigns.c (find_hard_regno_for): Use lra_reg_val_equal_p
        to check the register content is equal or not.
        * lra-constraints.c (match_reload): Use lra_assign_reg_val
        to assign register content record.
        * lra-eliminations.c (update_reg_eliminate): Use
	lra_update_reg_val_offset to update register content offset.
        * lra-int.h (struct lra_reg): Add offset member.
        (lra_reg_val_equal_p): New static inline function.
        (lra_update_reg_val_offset): New static inline function.
        (lra_assign_reg_val): New static inline function.
        * lra.c (lra_create_new_reg): Use lra_assign_reg_val
        to assign register content record.
        (initialize_lra_reg_info_element): Initial offset to zero.

From-SVN: r198204

1 files changed, 2 insertions, 1 deletions

diff --git a/gcc/lra.c b/gcc/lra.c
index 8082643..a4da0a0 100644
--- a/gcc/lra.c
+++ b/gcc/lra.c
@@ -194,7 +194,7 @@ lra_create_new_reg (enum machine_mode md_mode, rtx original,
   new_reg
     = lra_create_new_reg_with_unique_value (md_mode, original, rclass, title);
   if (original != NULL_RTX && REG_P (original))
-    lra_reg_info[REGNO (new_reg)].val = lra_reg_info[REGNO (original)].val;
+    lra_assign_reg_val (REGNO (original), REGNO (new_reg));
   return new_reg;
 }
 
@@ -1392,6 +1392,7 @@ initialize_lra_reg_info_element (int i)
   lra_reg_info[i].last_reload = 0;
   lra_reg_info[i].restore_regno = -1;
   lra_reg_info[i].val = get_new_reg_value ();
+  lra_reg_info[i].offset = 0;
   lra_reg_info[i].copies = NULL;
 }