From: Roman Zippel <zippel@linux-m68k.org>
Date: Thu, 2 Sep 2004 23:55:09 +0000 (+0000)
Subject: * combine.c (distribute_notes): Don't add REG_LABEL to jump insn.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=b54567e24cb7bbc74b3e084cf0b7964c378f6511;p=gcc.git

* combine.c (distribute_notes): Don't add REG_LABEL to jump insn.

From-SVN: r87002
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index b6e3cb29d88..758a33ac9b9 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2004-09-02  Roman Zippel  <zippel@linux-m68k.org>
+ 
+	* combine.c (distribute_notes): Don't add REG_LABEL to jump insn.
+
 2004-09-02  Eric Christopher  <echristo@redhat.com>
 
 	* builtins.c (expand_builtin_cabs): Delete.
diff --git a/gcc/combine.c b/gcc/combine.c
index 4bd1555b1ed..be1a08c2d66 100644
--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -11839,21 +11839,25 @@ distribute_notes (rtx notes, rtx from_insn, rtx i3, rtx i2)
 		place = i2;
 	    }
 
-	  /* Don't attach REG_LABEL note to a JUMP_INSN which has
-	     JUMP_LABEL already.  Instead, decrement LABEL_NUSES.  */
-	  if (place && JUMP_P (place) && JUMP_LABEL (place))
+	  /* Don't attach REG_LABEL note to a JUMP_INSN.  Add
+	     a JUMP_LABEL instead or decrement LABEL_NUSES.  */
+	  if (place && JUMP_P (place))
 	    {
-	      if (JUMP_LABEL (place) != XEXP (note, 0))
+	      if (!JUMP_LABEL (place))
+		JUMP_LABEL (place) = XEXP (note, 0);
+	      else if (JUMP_LABEL (place) != XEXP (note, 0))
 		abort ();
-	      if (LABEL_P (JUMP_LABEL (place)))
+	      else if (LABEL_P (JUMP_LABEL (place)))
 		LABEL_NUSES (JUMP_LABEL (place))--;
 	      place = 0;
 	    }
-	  if (place2 && JUMP_P (place2) && JUMP_LABEL (place2))
+	  if (place2 && JUMP_P (place2))
 	    {
-	      if (JUMP_LABEL (place2) != XEXP (note, 0))
+	      if (!JUMP_LABEL (place2))
+		JUMP_LABEL (place2) = XEXP (note, 0);
+	      else if (JUMP_LABEL (place2) != XEXP (note, 0))
 		abort ();
-	      if (LABEL_P (JUMP_LABEL (place2)))
+	      else if (LABEL_P (JUMP_LABEL (place2)))
 		LABEL_NUSES (JUMP_LABEL (place2))--;
 	      place2 = 0;
 	    }