* gcc.c-torture/execute/20010129-1.c: Compile with -mtune=i686
	for ia32 targets only.
	* g++.dg/ext/attrib42.C: Compile for ia32 targets only.
	* g++.dg/tree-ssa/pr29902.C: Ditto.
	* g++.dg/cpp0x/gen-attrs-42.C: Ditto.

From-SVN: r217030