PR target/79569
	* config/i386/i386.opt (m3dnowa): Replace Undocumented with Report.
	* common/config/i386/i386-common.c (OPTION_MASK_ISA_3DNOW_A_SET): Define.
	(ix86_handle_option): Handle OPT_m3dnowa.
	* doc/invoke.texi (-m3dnowa): Document.
	* doc/extend.texi (__builtin_ia32_pmulhuw, __builtin_ia32_pf2iw): Use
	-m3dnowa instead of -m3dnow -march=athlon.

	* gcc.target/i386/3dnowA-3.c: New test.

From-SVN: r245561