rtlanal.c (find_reg_note): Ignore notes that are not on on insns of class 'i'.

        * rtlanal.c (find_reg_note): Ignore notes that are not on on
        insns of class 'i'.
        (find_regno_note): Likewise.

Co-Authored-By: Jeffrey A Law <law@cygnus.com>

From-SVN: r19733

gcc/ChangeLog

@@ -25,6 +25,10 @@ Wed May 13 13:09:19 1998  Jim Wilson  <wilson@cygnus.com>
 Wed May 13 15:28:59 1998  Michael Meissner  <meissner@cygnus.com>
 			  Jeff Law <law@cygnus.com>
 
+	* rtlanal.c (find_reg_note): Ignore notes that are not on on
+	insns of class 'i'.
+	(find_regno_note): Likewise.
+
 	* Makefile.in (stor-layout.o): Depend on except.h
 	(varasm.o, function.o): Likewise.
 	(expr.o): Depend on except.h, modemap.def and hard-reg-set.h.

gcc/rtlanal.c

@@ -1259,6 +1259,10 @@ find_reg_note (insn, kind, datum)
 {
   register rtx link;
 
+  /* Ignore anything that is not an INSN, JUMP_INSN or CALL_INSN.  */
+  if (GET_RTX_CLASS (GET_CODE (insn)) != 'i')
+    return 0;
+
   for (link = REG_NOTES (insn); link; link = XEXP (link, 1))
     if (REG_NOTE_KIND (link) == kind
 	&& (datum == 0 || datum == XEXP (link, 0)))
@@ -1279,6 +1283,10 @@ find_regno_note (insn, kind, regno)
 {
   register rtx link;
 
+  /* Ignore anything that is not an INSN, JUMP_INSN or CALL_INSN.  */
+  if (GET_RTX_CLASS (GET_CODE (insn)) != 'i')
+    return 0;
+
   for (link = REG_NOTES (insn); link; link = XEXP (link, 1))
     if (REG_NOTE_KIND (link) == kind
 	/* Verify that it is a register, so that scratch and MEM won't cause a