[patch] emit-rtl.c: Remove copy_most_rtx.

[Kazu Hirata]

Hi,

Attached is a patch to remove copy_most_rtx as is unused.

Bootstrapped on i686-pc-linux-gnu.  OK to apply?

Kazu Hirata

2004-11-07  Kazu Hirata  <kazu@cs.umass.edu>

	* emit-rtl.c (copy_most_rtx): Remove.
	* rtl.h: Remove the corresponding prototype.

Index: emit-rtl.c
===================================================================
RCS file: /home/kazu/nobackup/gcc-cvs/gcc/gcc/emit-rtl.c,v
retrieving revision 1.422
diff -u -d -p -r1.422 emit-rtl.c
--- emit-rtl.c	27 Oct 2004 01:36:11 -0000	1.422
+++ emit-rtl.c	7 Nov 2004 06:46:50 -0000
@@ -2371,105 +2371,6 @@ reset_used_decls (tree blk)
     reset_used_decls (t);
 }
 
-/* Similar to `copy_rtx' except that if MAY_SHARE is present, it is
-   placed in the result directly, rather than being copied.  MAY_SHARE is
-   either a MEM of an EXPR_LIST of MEMs.  */
-
-rtx
-copy_most_rtx (rtx orig, rtx may_share)
-{
-  rtx copy;
-  int i, j;
-  RTX_CODE code;
-  const char *format_ptr;
-
-  if (orig == may_share
-      || (GET_CODE (may_share) == EXPR_LIST
-	  && in_expr_list_p (may_share, orig)))
-    return orig;
-
-  code = GET_CODE (orig);
-
-  switch (code)
-    {
-    case REG:
-    case CONST_INT:
-    case CONST_DOUBLE:
-    case CONST_VECTOR:
-    case SYMBOL_REF:
-    case CODE_LABEL:
-    case PC:
-    case CC0:
-      return orig;
-    default:
-      break;
-    }
-
-  copy = rtx_alloc (code);
-  PUT_MODE (copy, GET_MODE (orig));
-  RTX_FLAG (copy, in_struct) = RTX_FLAG (orig, in_struct);
-  RTX_FLAG (copy, volatil) = RTX_FLAG (orig, volatil);
-  RTX_FLAG (copy, unchanging) = RTX_FLAG (orig, unchanging);
-  RTX_FLAG (copy, frame_related) = RTX_FLAG (orig, frame_related);
-  RTX_FLAG (copy, return_val) = RTX_FLAG (orig, return_val);
-
-  format_ptr = GET_RTX_FORMAT (GET_CODE (copy));
-
-  for (i = 0; i < GET_RTX_LENGTH (GET_CODE (copy)); i++)
-    {
-      switch (*format_ptr++)
-	{
-	case 'e':
-	  XEXP (copy, i) = XEXP (orig, i);
-	  if (XEXP (orig, i) != NULL && XEXP (orig, i) != may_share)
-	    XEXP (copy, i) = copy_most_rtx (XEXP (orig, i), may_share);
-	  break;
-
-	case 'u':
-	  XEXP (copy, i) = XEXP (orig, i);
-	  break;
-
-	case 'E':
-	case 'V':
-	  XVEC (copy, i) = XVEC (orig, i);
-	  if (XVEC (orig, i) != NULL)
-	    {
-	      XVEC (copy, i) = rtvec_alloc (XVECLEN (orig, i));
-	      for (j = 0; j < XVECLEN (copy, i); j++)
-		XVECEXP (copy, i, j)
-		  = copy_most_rtx (XVECEXP (orig, i, j), may_share);
-	    }
-	  break;
-
-	case 'w':
-	  XWINT (copy, i) = XWINT (orig, i);
-	  break;
-
-	case 'n':
-	case 'i':
-	  XINT (copy, i) = XINT (orig, i);
-	  break;
-
-	case 't':
-	  XTREE (copy, i) = XTREE (orig, i);
-	  break;
-
-	case 's':
-	case 'S':
-	  XSTR (copy, i) = XSTR (orig, i);
-	  break;
-
-	case '0':
-	  X0ANY (copy, i) = X0ANY (orig, i);
-	  break;
-
-	default:
-	  gcc_unreachable ();
-	}
-    }
-  return copy;
-}
-
 /* Mark ORIG as in use, and return a copy of it if it was already in use.
    Recursively does the same for subexpressions.  Uses
    copy_rtx_if_shared_1 to reduce stack space.  */
Index: rtl.h
===================================================================
RCS file: /home/kazu/nobackup/gcc-cvs/gcc/gcc/rtl.h,v
retrieving revision 1.519
diff -u -d -p -r1.519 rtl.h
--- rtl.h	4 Nov 2004 23:24:46 -0000	1.519
+++ rtl.h	7 Nov 2004 06:46:50 -0000
@@ -1387,7 +1387,6 @@ extern void dump_rtx_statistics (void);
 extern rtx copy_rtx_if_shared (rtx);
 
 /* In rtl.c */
-extern rtx copy_most_rtx (rtx, rtx);
 extern rtx shallow_copy_rtx_stat (rtx MEM_STAT_DECL);
 #define shallow_copy_rtx(a) shallow_copy_rtx_stat (a MEM_STAT_INFO)
 extern int rtx_equal_p (rtx, rtx);