cse.c (cse_insn): Don't look at JUMP_LABEL field of a conditionl return.

        * cse.c (cse_insn): Don't look at JUMP_LABEL field of a conditionl
        return.
        (cse_end_of_basic_block): Similarly.

From-SVN: r16534

gcc/ChangeLog

+Sun Nov 16 23:52:48 1997  Jeffrey A Law  (law@cygnus.com)
+
+	* cse.c (cse_insn): Don't look at JUMP_LABEL field of a conditionl
+	return.
+	(cse_end_of_basic_block): Similarly.
+ 
 Sun Nov 16 23:01:40 1997  J. Kean Johnston  <jkj@sco.com>
 
 	* i386/sco5.h (ASM_OUTPUT_ALIGNED_BSS): Define.

gcc/cse.c

@@ -7062,7 +7062,8 @@ cse_insn (insn, in_libcall_block)
 	  NOTE_SOURCE_FILE (insn) = 0;
 	  cse_jumps_altered = 1;
 	  /* One less use of the label this insn used to jump to.  */
-	  --LABEL_NUSES (JUMP_LABEL (insn));
+	  if (JUMP_LABEL (insn) != 0)
+	    --LABEL_NUSES (JUMP_LABEL (insn));
 	  /* No more processing for this set.  */
 	  sets[i].rtl = 0;
 	}
@@ -8095,6 +8096,7 @@ cse_end_of_basic_block (insn, data, follow_jumps, after_loop, skip_blocks)
 	       && GET_CODE (p) == JUMP_INSN
       	       && GET_CODE (PATTERN (p)) == SET
 	       && GET_CODE (SET_SRC (PATTERN (p))) == IF_THEN_ELSE
+	       && JUMP_LABEL (p) != 0
 	       && LABEL_NUSES (JUMP_LABEL (p)) == 1
 	       && NEXT_INSN (JUMP_LABEL (p)) != 0)
 	{