* genrecog.c (write_switch): Check for duplicate CODE cases.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@30276 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 718a270..330d5ab 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+Sat Oct 30 14:38:22 1999  Richard Henderson  <rth@cygnus.com>
+
+       * genrecog.c (write_switch): Check for duplicate CODE cases.
+
 Sat Oct 30 14:31:48 1999  Richard Henderson  <rth@cygnus.com>
 
        * ggc-common.c: Update pre-function commentary.

diff --git a/gcc/genrecog.c b/gcc/genrecog.c
index 5aea004..464c499 100644 (file)
--- a/gcc/genrecog.c
+++ b/gcc/genrecog.c
@@ -1695,13 +1695,14 @@ write_switch (start, depth)
     {
       char codemap[NUM_RTX_CODE];
       struct decision *ret;
+      RTX_CODE code;
 
       memset (codemap, 0, sizeof(codemap));
 
       printf ("  switch (GET_CODE (x%d))\n    {\n", depth);
+      code = p->tests->u.code;
       do 
        {
-         RTX_CODE code = p->tests->u.code;
          printf ("    case ");
          print_code (code);
          printf (":\n      goto L%d;\n", p->success.first->number);
@@ -1710,7 +1711,10 @@ write_switch (start, depth)
          codemap[code] = 1;
          p = p->next;
        }
-      while (p && p->tests->type == DT_code && !p->tests->next);
+      while (p
+            && ! p->tests->next
+            && p->tests->type == DT_code
+            && ! codemap[code = p->tests->u.code]);
 
       /* If P is testing a predicate that we know about and we haven't
         seen any of the codes that are valid for the predicate, we can