predicates.md (promotable_binary_operator): Add minus to the list of promotable operators.

        * config/i386/predicates.md (promotable_binary_operator): Add minus
        to the list of promotable operators.

From-SVN: r180783

gcc/ChangeLog

+2011-11-02  Teresa Johnson  <tejohnson@google.com>
+
+	* config/i386/predicates.md (promotable_binary_operator): Add minus
+	to the list of promotable operators.
+
 2011-11-02  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
 	* gthr-single.h, gthr.h: Move to ../libgcc.

gcc/config/i386/predicates.md

@@ -1162,7 +1162,7 @@
 
 ;; Return true if OP is a binary operator that can be promoted to wider mode.
 (define_predicate "promotable_binary_operator"
-  (ior (match_code "plus,and,ior,xor,ashift")
+  (ior (match_code "plus,minus,and,ior,xor,ashift")
        (and (match_code "mult")
 	    (match_test "TARGET_TUNE_PROMOTE_HIMODE_IMUL"))))