remove unused loads rtx_insn_list

gcc/ChangeLog:

2016-07-06  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>

	* gcse.c (struct ls_expr): Remove loads field.
	(ldst_entry): Adjust.
	(free_ldst_entry): Likewise.
	(print_ldst_list): Likewise.
	(compute_ld_motion_mems): Likewise.

From-SVN: r238064

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d0ff7faeb8442ad2d2fe59179484da2b1436a184..0fabfc61e75480af5a999eceaee6aa0cc5f34f6a 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,11 @@
+2016-07-06  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>
+
+       * gcse.c (struct ls_expr): Remove loads field.
+       (ldst_entry): Adjust.
+       (free_ldst_entry): Likewise.
+       (print_ldst_list): Likewise.
+       (compute_ld_motion_mems): Likewise.
+
 2016-07-06  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>
 
        * store-motion.c (struct st_expr): Make antic_stores a vector.

diff --git a/gcc/gcse.c b/gcc/gcse.c
index a3a7dc31353d863fc8dad7898e2eedd7bf7f5da1..127a65a871dba6e6b9e7e4c9d85e04dc946ae459 100644 (file)
--- a/gcc/gcse.c
+++ b/gcc/gcse.c
@@ -342,7 +342,6 @@ struct ls_expr
   struct gcse_expr * expr;     /* Gcse expression reference for LM.  */
   rtx pattern;                 /* Pattern of this mem.  */
   rtx pattern_regs;            /* List of registers mentioned by the mem.  */
-  rtx_insn_list *loads;                /* INSN list of loads seen.  */
   rtx_insn_list *stores;       /* INSN list of stores seen.  */
   struct ls_expr * next;       /* Next in the list.  */
   int invalid;                 /* Invalid for some reason.  */
@@ -3605,7 +3604,6 @@ ldst_entry (rtx x)
   ptr->expr         = NULL;
   ptr->pattern      = x;
   ptr->pattern_regs = NULL_RTX;
-  ptr->loads        = NULL;
   ptr->stores       = NULL;
   ptr->reaching_reg = NULL_RTX;
   ptr->invalid      = 0;
@@ -3622,7 +3620,6 @@ ldst_entry (rtx x)
 static void
 free_ldst_entry (struct ls_expr * ptr)
 {
-  free_INSN_LIST_list (& ptr->loads);
   free_INSN_LIST_list (& ptr->stores);
 
   free (ptr);
@@ -3663,13 +3660,6 @@ print_ldst_list (FILE * file)
 
       print_rtl (file, ptr->pattern);
 
-      fprintf (file, "\n        Loads : ");
-
-      if (ptr->loads)
-       print_rtl (file, ptr->loads);
-      else
-       fprintf (file, "(nil)");
-
       fprintf (file, "\n       Stores : ");
 
       if (ptr->stores)
@@ -3801,9 +3791,7 @@ compute_ld_motion_mems (void)
                  if (MEM_P (src) && simple_mem (src))
                    {
                      ptr = ldst_entry (src);
-                     if (REG_P (dest))
-                       ptr->loads = alloc_INSN_LIST (insn, ptr->loads);
-                     else
+                     if (!REG_P (dest))
                        ptr->invalid = 1;
                    }
                  else