From: Richard Stallman <rms@gnu.org>
Date: Sun, 11 Jul 1993 22:22:44 +0000 (+0000)
Subject: (output_move_double): Do the low reg first,
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=cb4107092f20307954da832ceec7842d0e77d3b3;p=gcc.git

(output_move_double): Do the low reg first,

when only the high reg has an overlap.

From-SVN: r4904
---

diff --git a/gcc/config/ns32k/ns32k.c b/gcc/config/ns32k/ns32k.c
index 6dd4a968869..2235d445292 100644
--- a/gcc/config/ns32k/ns32k.c
+++ b/gcc/config/ns32k/ns32k.c
@@ -345,10 +345,13 @@ output_move_double (operands)
 	  operands[1] = gen_rtx (MEM, DImode, op0);
 	  latehalf[1] = adj_offsettable_operand (operands[1], 4);
 	}
-      /* Do the late half first.  */
-      output_asm_insn (singlemove_string (latehalf), latehalf);
-      /* Then clobber.  */
-      return singlemove_string (operands);
+      if (reg_mentioned_p (op0, XEXP (op1, 0)))
+	{
+	  /* The first half has the overlap, Do the late half first.  */
+	  output_asm_insn (singlemove_string (latehalf), latehalf);
+	  /* Then clobber.  */
+	  return singlemove_string (operands);
+	}
     }
 
   /* Normal case.  Do the two words, low-numbered first.  */