From: Jeffrey A Law <law@cygnus.com>
Date: Wed, 18 Apr 2001 03:39:19 +0000 (+0000)
Subject: jump.c (mark_all_labels): Canonicalize the tail recursion label attached to CALL_PLAC... 
X-Git-Tag: prereleases/libstdc++-3.0.95~4875
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b9c81bcb53beda99725d20443095a0b84220e0f4;p=thirdparty%2Fgcc.git

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
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index bf154e8fda7c..577a11d161d3 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+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,
diff --git a/gcc/jump.c b/gcc/jump.c
index 779972252acd..242692143b18 100644
--- a/gcc/jump.c
+++ b/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;
 	  }