diff mbox

Fix out-of-date comments in expr.c

Message ID 529FA5BE.9030008@redhat.com
State New
Headers show

Commit Message

Jeff Law Dec. 4, 2013, 9:59 p.m. UTC 
Based on discussions with Bernd Edlinger..  These two comments were 
definitely in need to revision.  Installed on the trunk.

Jeff
* expr.c (expand_assignment): Update comments.
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Patch

diff --git a/gcc/expr.c b/gcc/expr.c
index 4e0e54f..2a13d8f 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -4869,8 +4869,8 @@  expand_assignment (tree to, tree from, bool nontemporal)
 	  if (GET_MODE (offset_rtx) != address_mode)
 	    offset_rtx = convert_to_mode (address_mode, offset_rtx, 0);
 
-	  /* A constant address in TO_RTX can have VOIDmode, we must not try
-	     to call force_reg for that case.  Avoid that case.  */
+	  /* The check for a constant address in TO_RTX not having VOIDmode
+	     is probably no longer necessary.  */
 	  if (MEM_P (to_rtx)
 	      && GET_MODE (to_rtx) == BLKmode
 	      && GET_MODE (XEXP (to_rtx, 0)) != VOIDmode
@@ -10062,8 +10062,8 @@  expand_expr_real_1 (tree exp, rtx target, enum machine_mode tmode,
 	      offset_rtx = convert_to_mode (address_mode, offset_rtx, 0);
 
 	    if (GET_MODE (op0) == BLKmode
-		/* A constant address in OP0 can have VOIDmode, we must
-		   not try to call force_reg in that case.  */
+		/* The check for a constant address in OP0 not having VOIDmode
+		   is probably no longer necessary.  */
 		&& GET_MODE (XEXP (op0, 0)) != VOIDmode
 		&& bitsize != 0
 		&& (bitpos % bitsize) == 0