From: Richard Kenner <kenner@gcc.gnu.org>
Date: Tue, 16 Jan 1996 13:21:16 +0000 (-0500)
Subject: (emit_move_insn_1): Don't emit clobber when moving by parts and source
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=43e046cbc1dbcc553365d1e807016a135b97008f;p=gcc.git

(emit_move_insn_1): Don't emit clobber when moving by parts and source
equals destination.

From-SVN: r11018
---

diff --git a/gcc/expr.c b/gcc/expr.c
index 60336c96eca..f2ed65c1277 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -2204,7 +2204,8 @@ emit_move_insn_1 (x, y)
 #endif
 			     
       /* Show the output dies here.  */
-      emit_insn (gen_rtx (CLOBBER, VOIDmode, x));
+      if (x != y)
+        emit_insn (gen_rtx (CLOBBER, VOIDmode, x));
 
       for (i = 0;
 	   i < (GET_MODE_SIZE (mode)  + (UNITS_PER_WORD - 1)) / UNITS_PER_WORD;