From: aoliva <aoliva@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Tue, 17 Oct 2000 14:27:53 +0000 (+0000)
Subject: * genrecog.c (write_switch): Return the first condition that needs a
X-Git-Url: http://git.sourceforge.jp/view?a=commitdiff_plain;ds=sidebyside;h=0ced2f6670a6e8e50191f9106cb0bb3b05a52642;p=pf3gnuchains%2Fgcc-fork.git

* genrecog.c (write_switch): Return the first condition that needs a
label.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@36903 138bc75d-0d04-0410-961f-82ee72b054a4
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 15904fab2dc..f29d3b9b2bd 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2000-10-17  Alexandre Oliva  <aoliva@redhat.com>
+
+	* genrecog.c (write_switch): Return the first condition that needs a
+	label.
+
 2000-10-17  Bernd Schmidt  <bernds@redhat.co.uk>
 
 	* c-tree.h (warn_sequence_point): Move declaration to...
diff --git a/gcc/genrecog.c b/gcc/genrecog.c
index b512181e10d..d1437988947 100644
--- a/gcc/genrecog.c
+++ b/gcc/genrecog.c
@@ -1650,6 +1650,7 @@ write_switch (start, depth)
 {
   struct decision *p = start;
   enum decision_type type = p->tests->type;
+  struct decision *needs_label = NULL;
 
   /* If we have two or more nodes in sequence that test the same one
      thing, we may be able to use a switch statement.  */
@@ -1674,6 +1675,9 @@ write_switch (start, depth)
       code = p->tests->u.code;
       do 
 	{
+	  if (p != start && p->need_label && needs_label == NULL)
+	    needs_label = p;
+
 	  printf ("    case ");
 	  print_code (code);
 	  printf (":\n      goto L%d;\n", p->success.first->number);
@@ -1697,7 +1701,10 @@ write_switch (start, depth)
 	 we don't actually write the test here, as it gets kinda messy.
 	 It is trivial to leave this to later by telling our caller that
 	 we only processed the CODE tests.  */
-      ret = p;
+      if (needs_label != NULL)
+	ret = needs_label;
+      else
+	ret = p;
 
       while (p && p->tests->type == DT_pred
 	     && p->tests->u.pred.index >= 0)
@@ -1774,6 +1781,9 @@ write_switch (start, depth)
 
       do
 	{
+	  if (p != start && p->need_label && needs_label == NULL)
+	    needs_label = p;
+
 	  printf ("    case ");
 	  switch (type)
 	    {
@@ -1800,7 +1810,7 @@ write_switch (start, depth)
       
       printf ("    default:\n      break;\n    }\n");
 
-      return p;
+      return needs_label != NULL ? needs_label : p;
     }
   else
     {