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

From-SVN: r5817

(movdi): Force use of "o" alternative if operand 1 is a MEM.
From-SVN: r5817
02ccd511 · Richard Kenner · 4db92e9a · 02ccd511
Commit 02ccd511 authored Oct 19, 1993 by Richard Kenner
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gcc/config/clipper/clipper.md
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--- 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"))]
  ""
  "*