Refine rules for function versioning

[Paolo Bonzini]

I'll commit this.

Paolo

Index: testsuite/gcc.dg/vect/vect.exp
===================================================================
--- testsuite/gcc.dg/vect/vect.exp	(revision 149005)
+++ testsuite/gcc.dg/vect/vect.exp	(working copy)
@@ -259,7 +259,7 @@
  # With -O3.
  # Don't allow IPA cloning, because it throws our counts out of whack.
  set DEFAULT_VECTCFLAGS $SAVED_DEFAULT_VECTCFLAGS
-lappend DEFAULT_VECTCFLAGS "-O3 -fno-ipa-cp-clone"
+lappend DEFAULT_VECTCFLAGS "-O3" "-fno-ipa-cp-clone"
  if  [istarget "spu-*-*"] {
    lappend DEFAULT_VECTCFLAGS "-funroll-loops"
  }