* config/i386/constraint.md (Yd, Yx): New register constraints.
	* config/i386/i386.md (*pushdf): Merge with *pushdf_nointeger.  Use
	Yd conditional register constraint.
	(*movtf_internal): Use standard_sse_constant_opcode.
	(*movxf_internal): Merge with *movxf_internal_nointeger.  Use
	Yx conditional register constraint.
	(*movdf_internal): Merge with *movdf_internal_nointeger.  Use
	Yd conditional register constraint.  Use standard_sse_constant_p to
	check for valid SSE constants and call standard_sse_constant_opcode to
	output SSE insn.
	(*movsf_internal): Use standard_sse_constant_p to check for valid SSE
	constants and call standard_sse_constant_opcode to output SSE insn.
	* config/i386/i386.c (ix86_option_ovverride_internal): Set
	TARGET_INTEGER_DFMODE_MOVES for 64bit targets.  Clear it when
	optimize_size is set.
	(standard_sse_constant_opcode): Output conditional AVX insn templates.

From-SVN: r173757