From: J"orn Rennecke <amylaar@redhat.com>
Date: Wed, 29 Nov 2000 00:25:08 +0000 (+0000)
Subject: jump.c (delete_insn): Check that REG_LABEL note actually contains a CODE_LABEL.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f423a6a7dd5bf70b31f5618c08205975cb36a0f1;p=gcc.git

jump.c (delete_insn): Check that REG_LABEL note actually contains a CODE_LABEL.

	* jump.c (delete_insn): Check that REG_LABEL note actually contains
	a CODE_LABEL.

From-SVN: r37835
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index dfc9b7af196..e606be48007 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+Wed Nov 29 00:08:23 2000  J"orn Rennecke <amylaar@redhat.com>
+
+	* jump.c (delete_insn): Check that REG_LABEL note actually contains
+	a CODE_LABEL.
+
 2000-11-28  Neil Booth  <neilb@earthling.net>
 
         * c-common.h: Remove flag_digraphs.
diff --git a/gcc/jump.c b/gcc/jump.c
index dcdd4aec693..6a916fa8cd9 100644
--- a/gcc/jump.c
+++ b/gcc/jump.c
@@ -2857,7 +2857,9 @@ delete_insn (insn)
   /* Likewise for an ordinary INSN / CALL_INSN with a REG_LABEL note.  */
   if (GET_CODE (insn) == INSN || GET_CODE (insn) == CALL_INSN)
     for (note = REG_NOTES (insn); note; note = XEXP (note, 1))
-      if (REG_NOTE_KIND (note) == REG_LABEL)
+      if (REG_NOTE_KIND (note) == REG_LABEL
+	  /* This could also be a NOTE_INSN_DELETED_LABEL note.  */
+	  && GET_CODE (XEXP (note, 0)) == CODE_LABEL)
 	if (--LABEL_NUSES (XEXP (note, 0)) == 0)
 	  delete_insn (XEXP (note, 0));