From: Richard Sandiford <rdsandiford@googlemail.com>
Date: Thu, 2 Aug 2012 20:44:38 +0000 (+0000)
Subject: recog.c (split_insn): Copy the original SET_SRC before using it as a note.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=b5b071a5688e68b783547add84949c63c49d7dc1;p=gcc.git

recog.c (split_insn): Copy the original SET_SRC before using it as a note.

gcc/
	* recog.c (split_insn): Copy the original SET_SRC before using
	it as a note.

From-SVN: r190102
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index edecc9728f5..524ae209da8 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2012-08-02  Richard Sandiford  <rdsandiford@googlemail.com>
+
+	* recog.c (split_insn): Copy the original SET_SRC before using
+	it as a note.
+
 2012-08-02  Richard Sandiford  <rdsandiford@googlemail.com>
 
 	* reorg.c (dbr_schedule): Delete REG_BR_PRED loop.
diff --git a/gcc/recog.c b/gcc/recog.c
index a05e8c608f7..d7381abd579 100644
--- a/gcc/recog.c
+++ b/gcc/recog.c
@@ -2831,7 +2831,8 @@ split_insn (rtx insn)
 	  if (note && CONSTANT_P (XEXP (note, 0)))
 	    set_unique_reg_note (last, REG_EQUAL, XEXP (note, 0));
 	  else if (CONSTANT_P (SET_SRC (insn_set)))
-	    set_unique_reg_note (last, REG_EQUAL, SET_SRC (insn_set));
+	    set_unique_reg_note (last, REG_EQUAL,
+				 copy_rtx (SET_SRC (insn_set)));
 	}
     }