jump.c (simplejump_p): Recognize any single_set jump of the proper form.

        * jump.c (simplejump_p): Recognize any single_set jump
        of the proper form.

From-SVN: r38786

gcc/ChangeLog

 2001-01-07  Richard Henderson  <rth@redhat.com>
 
+	* jump.c (simplejump_p): Recognize any single_set jump
+	of the proper form.
+
+2001-01-07  Richard Henderson  <rth@redhat.com>
+
 	* configure.in (slibdir): Accept an --with-slibdir option.
 	Use "test" not "[" in configure.  Default to $(libdir).
 

gcc/jump.c

@@ -2161,10 +2161,21 @@ int
 simplejump_p (insn)
      rtx insn;
 {
-  return (GET_CODE (insn) == JUMP_INSN
-	  && GET_CODE (PATTERN (insn)) == SET
-	  && GET_CODE (SET_DEST (PATTERN (insn))) == PC
-	  && GET_CODE (SET_SRC (PATTERN (insn))) == LABEL_REF);
+  rtx set;
+
+  if (GET_CODE (insn) != JUMP_INSN)
+    return 0;
+
+  set = PATTERN (insn);
+  if (GET_CODE (set) != SET)
+    {
+      set = single_set_1 (insn);
+      if (set == NULL_RTX)
+	return 0;
+    }
+
+  return (GET_CODE (SET_DEST (set)) == PC
+	  && GET_CODE (SET_SRC (set)) == LABEL_REF);
 }
 
 /* Return nonzero if INSN is a (possibly) conditional jump