From: Richard Earnshaw <rearnsha@arm.com>
Date: Wed, 20 Oct 1999 12:45:22 +0000 (+0000)
Subject: (split_edge): Handle casesi insns.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=506f9fbf4218d6a4a4481e7637c13bb0086fee9e;p=gcc.git

(split_edge): Handle casesi insns.

From-SVN: r30101
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index de82cea9293..76ca2b9c837 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -4,6 +4,7 @@ Wed Oct 20 10:46:41 1999  Richard Earnshaw (rearnsha@arm.com)
 
 	* flow.c (merge_blocks_move_predecessor_nojumps): Re-order the basic
 	block records so that merge_blocks_nomove will clean up correctly.
+	(split_edge): Handle casesi insns.
 
 Tue Oct 19 23:43:50 1999  Jeffrey A Law  (law@cygnus.com)
 
diff --git a/gcc/flow.c b/gcc/flow.c
index fcefe0aaa2c..0990bd0d67a 100644
--- a/gcc/flow.c
+++ b/gcc/flow.c
@@ -1484,6 +1484,19 @@ split_edge (edge_in)
 		--LABEL_NUSES (old_label);
 		++LABEL_NUSES (new_label);
 	      }
+
+	  /* Handle casesi dispatch insns */
+	  if ((tmp = single_set (insn)) != NULL
+	      && SET_DEST (tmp) == pc_rtx
+	      && GET_CODE (SET_SRC (tmp)) == IF_THEN_ELSE
+	      && GET_CODE (XEXP (SET_SRC (tmp), 2)) == LABEL_REF
+	      && XEXP (XEXP (SET_SRC (tmp), 2), 0) == old_label)
+	    {
+	      XEXP (SET_SRC (tmp), 2) = gen_rtx_LABEL_REF (VOIDmode, 
+							   new_label);
+	      --LABEL_NUSES (old_label);
+	      ++LABEL_NUSES (new_label);
+	    }
 	}
       else
 	{