jump.c (mark_all_labels): Canonicalize the tail recursion label attached to CALL_PLACEHOLDER insns.

        * jump.c (mark_all_labels): Canonicalize the tail recursion
        label attached to CALL_PLACEHOLDER insns.

From-SVN: r41400

gcc/ChangeLog

+Tue Apr 17 21:41:11 2001  Jeffrey A Law  (law@cygnus.com)
+
+	* jump.c (mark_all_labels): Canonicalize the tail recursion
+	label attached to CALL_PLACEHOLDER insns.
+
 2001-04-17  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
 	* output.h (dump_flow_info, free_basic_block_vars,

gcc/jump.c

@@ -843,6 +843,17 @@ mark_all_labels (f, cross_jump)
 	    mark_all_labels (XEXP (PATTERN (insn), 0), cross_jump);
 	    mark_all_labels (XEXP (PATTERN (insn), 1), cross_jump);
 	    mark_all_labels (XEXP (PATTERN (insn), 2), cross_jump);
+
+	    /* Canonicalize the tail recursion label attached to the
+	       CALL_PLACEHOLDER insn.  */
+	    if (XEXP (PATTERN (insn), 3))
+	      {
+		rtx label_ref = gen_rtx_LABEL_REF (VOIDmode,
+						   XEXP (PATTERN (insn), 3));
+		mark_jump_label (label_ref, insn, cross_jump, 0);
+		XEXP (PATTERN (insn), 3) = XEXP (label_ref, 0);
+	      }
+
 	    continue;
 	  }