sparc.md (jump): Don't use the annul bit around an empty loop.

* sparc.md (jump): Don't use the annul bit around an empty loop.
Patch from Kevin.Kelly@East.Sun.COM.

From-SVN: r17124

gcc/ChangeLog

+Wed Dec 17 15:06:04 1997  Richard Henderson  <rth@cygnus.com>
+
+	* sparc.md (jump): Don't use the annul bit around an empty loop.
+	Patch from Kevin.Kelly@East.Sun.COM.
+
 Wed Dec 17 00:51:36 1997  Stan Cox (scox@cygnus.com)
 
 	* jump.c: (optimize_jump): Don't use the return register as a 

gcc/config/sparc/sparc.md

@@ -5014,7 +5014,21 @@
 (define_insn "jump"
   [(set (pc) (label_ref (match_operand 0 "" "")))]
   ""
-  "b%* %l0%("
+  "*
+{
+  /* Some implementations are reported to have problems with
+	foo: b,a foo
+     i.e. an empty loop with the annul bit set.  The workaround is to use 
+        foo: b foo; nop
+     instead.  */
+
+  if (flag_delayed_branch
+      && (insn_addresses[INSN_UID (operands[0])]
+	  == insn_addresses[INSN_UID (insn)]))
+    return \"b %l0%#\";
+  else
+    return \"b%* %l0%(\";
+}"
   [(set_attr "type" "uncond_branch")])
 
 (define_expand "tablejump"