From: Richard Kenner <kenner@gcc.gnu.org>
Date: Sat, 9 Oct 1993 19:19:52 +0000 (-0400)
Subject: (expand_expr, case ABS_EXPR): Don't copy twice into volatile MEM.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=37568125833520ba34d3723db4c888013ae0d725;p=gcc.git

(expand_expr, case ABS_EXPR): Don't copy twice into volatile MEM.

From-SVN: r5698
---

diff --git a/gcc/expr.c b/gcc/expr.c
index f31e048d5f1..91b2d6e011a 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -5001,6 +5001,7 @@ expand_expr (exp, target, tmode, modifier)
       target = original_target;
       temp = gen_label_rtx ();
       if (target == 0 || ! safe_from_p (target, TREE_OPERAND (exp, 0))
+	  || (GET_CODE (target) == MEM && MEM_VOLATILE_P (target))
 	  || (GET_CODE (target) == REG
 	      && REGNO (target) < FIRST_PSEUDO_REGISTER))
 	target = gen_reg_rtx (mode);