testsuite: AIX

C++ Modules do not work reliably on AIX.  This patch disables the
modules portion of the testsuite on AIX.

IBM128 float keywords not enabled for AIX, so skip this test.

gcc/testsuite/ChangeLog:

	* g++.dg/modules/modules.exp: Skip on AIX.
	* gcc.target/powerpc/pr99708.c: Skip on AIX.

gcc/testsuite/g++.dg/modules/modules.exp

@@ -44,6 +44,11 @@ if {[is_remote host]} {
     return
 }
 
+if { [istarget "powerpc-ibm-aix*"] } {
+    set torture_execute_xfail "powerpc-ibm-aix*"
+    return
+}
+
 global module_do
 global module_cmis
 

gcc/testsuite/gcc.target/powerpc/pr99708.c

@@ -1,4 +1,5 @@
 /* { dg-do run } */
+/* { dg-skip-if "" { powerpc*-*-darwin* powerpc-ibm-aix* } } */
 /* { require-effective-target ppc_float128_sw } */
 /* { dg-options "-O2 -mvsx -mfloat128" } */