From: Richard Henderson <rth@cygnus.com>
Date: Sat, 30 Oct 1999 21:40:05 +0000 (-0700)
Subject: * genrecog.c (write_switch): Check for duplicate CODE cases.
X-Git-Tag: prereleases/libstdc++-2.92~9798
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1e1933372608930414255b4f5124713d227f2f9c;p=thirdparty%2Fgcc.git

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

From-SVN: r30276
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 718a270bb9fd..330d5abdf668 100644
--- 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 5aea00490f0f..464c49921a7f 100644
--- 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