Backported from mainline

	Backported from mainline
	2012-09-14  Jakub Jelinek  <jakub@redhat.com>

	PR target/54564
	* config/i386/sse.md (fmai_vmfmadd_<mode>): Use (match_dup 1)
	instead of (match_dup 0) as second argument to vec_merge.
	(*fmai_fmadd_<mode>, *fmai_fmsub_<mode>): Likewise.
	Remove third alternative.
	(*fmai_fnmadd_<mode>, *fmai_fnmsub_<mode>): Likewise.  Negate
	operand 2 instead of operand 1, but put it as first argument
	of fma.
	* config/i386/fmaintrin.h (_mm_fnmadd_sd, _mm_fnmadd_ss,
	_mm_fnmsub_sd, _mm_fnmsub_ss): Negate the second argument instead
	of the first.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_7-branch@191570 138bc75d-0d04-0410-961f-82ee72b054a4