ieee.exp: Pass -ffloat-store to compiler for ieee tests.

8
        * execute/ieee/ieee.exp: Pass -ffloat-store to compiler for
        ieee tests.

From-SVN: r21691

gcc/testsuite/gcc.c-torture/execute/ieee/ieee.exp

@@ -34,6 +34,10 @@ if [target_info exists ieee_multilib_flags] {
     set additional_flags "";
 }
 
+# We must use -ffloat-store to ensure that excess precision on some machines
+# does not cause problems
+lappend additional_flags "-ffloat-store"
+
 # load support procs
 load_lib c-torture.exp