From: Richard Kenner <kenner@gcc.gnu.org>
Date: Wed, 20 Oct 1993 00:05:55 +0000 (-0400)
Subject: (movdi): Force use of "o" alternative if operand 1 is a MEM.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=02ccd5118e8920b9e17f6b78ce3afc3a6cc582d3;p=gcc.git

(movdi): Force use of "o" alternative if operand 1 is a MEM.

From-SVN: r5817
---

diff --git a/gcc/config/clipper/clipper.md b/gcc/config/clipper/clipper.md
index 24a82bfceba..2c8735cd182 100644
--- a/gcc/config/clipper/clipper.md
+++ b/gcc/config/clipper/clipper.md
@@ -306,8 +306,11 @@
     operands[1] = force_reg (DImode, operands[1]);
 }")
 
+;; If an operand is a MEM but not offsetable, we can't load it into
+;; a register, so we must force the third alternative to be the one
+;; reloaded.  Hence we show the first as more expensive.
 (define_insn ""
-  [(set (match_operand:DI 0 "register_operand" "=r,r,r")
+  [(set (match_operand:DI 0 "register_operand" "=?r,r,r")
 	(match_operand:DI 1 "general_operand"   "r,n,o"))]
   ""
   "*