Correctly check for 32-bit x86

	* testsuite/lib/libffi.exp: Load target-supports.exp.
	(run-many-tests): Only set targetabis for ia32.

From-SVN: r220158

libffi/ChangeLog

+2015-01-27  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
+
+	* testsuite/lib/libffi.exp: Load target-supports.exp.
+	(run-many-tests): Only set targetabis for ia32.
+
 2015-01-19  Richard Henderson  <rth@redhat.com>
 
 	PR libffi/64581

libffi/testsuite/lib/libffi.exp

@@ -23,6 +23,7 @@ proc load_gcc_lib { filename } {
 
 load_lib dg.exp
 load_lib libgloss.exp
+load_gcc_lib target-supports.exp
 load_gcc_lib target-libpath.exp
 load_gcc_lib wrapper.exp
 
@@ -308,7 +309,8 @@ proc run-many-tests { testcases extra_flags } {
 
     set targetabis { "" }
     if [string match $compiler_vendor "gnu"] {
-        if [istarget "i?86-*-*"] {
+        if { ([istarget "i?86-*-*"] || [istarget "x86_64-*-*"])
+	     && [is-effective-target ia32] } {
             set targetabis {
                 ""
                 "-DABI_NUM=FFI_STDCALL -DABI_ATTR=__STDCALL__"