From: Kazu Hirata <kazu@cs.umass.edu>
Date: Thu, 26 Jun 2003 13:42:33 +0000 (+0000)
Subject: postreload.c (reload_cse_simplify_set): Call cselib_lookup earlier.
X-Git-Tag: releases/gcc-3.4.0~5451
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=b2948a2caa8fefecc4c9baba198cacdf9609adc7;p=thirdparty%2Fgcc.git

postreload.c (reload_cse_simplify_set): Call cselib_lookup earlier.

	* postreload.c (reload_cse_simplify_set): Call cselib_lookup
	earlier.  Don't check if SRC is a constant.

From-SVN: r68533
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ba5cd5bc1072..48334d73906f 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2003-06-26  Kazu Hirata  <kazu@cs.umass.edu>
+
+	* postreload.c (reload_cse_simplify_set): Call cselib_lookup
+	earlier.  Don't check if SRC is a constant.
+
 2003-06-26  Kazu Hirata  <kazu@cs.umass.edu>
 
 	* Makefile.in (OBJS): Add postreload.o.
diff --git a/gcc/postreload.c b/gcc/postreload.c
index 78153b64df01..1c53395be327 100644
--- a/gcc/postreload.c
+++ b/gcc/postreload.c
@@ -246,21 +246,19 @@ reload_cse_simplify_set (set, insn)
     return 0;
 #endif
 
+  val = cselib_lookup (src, GET_MODE (SET_DEST (set)), 0);
+  if (! val)
+    return 0;
+
   /* If memory loads are cheaper than register copies, don't change them.  */
   if (GET_CODE (src) == MEM)
     old_cost = MEMORY_MOVE_COST (GET_MODE (src), dclass, 1);
-  else if (CONSTANT_P (src))
-    old_cost = rtx_cost (src, SET);
   else if (GET_CODE (src) == REG)
     old_cost = REGISTER_MOVE_COST (GET_MODE (src),
 				   REGNO_REG_CLASS (REGNO (src)), dclass);
   else
-    /* ???   */
     old_cost = rtx_cost (src, SET);
 
-  val = cselib_lookup (src, GET_MODE (SET_DEST (set)), 0);
-  if (! val)
-    return 0;
   for (l = val->locs; l; l = l->next)
     {
       rtx this_rtx = l->loc;