sparc: Use match_code in zero_or_v7_operand.

Failure to do so means that genpreds doesn't know that we're
matching a const_int, and it generates the wrong mode test.

        * config/sparc/predicates.md (zero_or_v7_operand): Use match_code.

From-SVN: r183481

gcc/ChangeLog

 2012-01-25  Richard Henderson  <rth@redhat.com>
 
+	* config/sparc/predicates.md (zero_or_v7_operand): Use match_code.
+
+2012-01-25  Richard Henderson  <rth@redhat.com>
+
 	PR target/51968
 	* config/arm/arm.c (neon_split_vcombine): Emit deleted note
 	to effect no-op split.

gcc/config/sparc/predicates.md

 ;; Predicate definitions for SPARC.
-;; Copyright (C) 2005, 2007, 2008, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 2005, 2007, 2008, 2010, 2012 Free Software Foundation, Inc.
 ;;
 ;; This file is part of GCC.
 ;;
@@ -113,8 +113,9 @@
 
 ;; Return true if OP is Zero, or if the target is V7.
 (define_predicate "zero_or_v7_operand"
-  (ior (match_test "op == const0_rtx")
-       (match_test "!TARGET_V8 && !TARGET_V9")))
+  (and (match_code "const_int")
+       (ior (match_test "INTVAL (op) == 0")
+	    (match_test "!TARGET_V8 && !TARGET_V9"))))
 
 ;; Predicates for symbolic constants.