mmx.md (*mov<mode>_internal_rex64): Use %vmovq for reg<->xmm moves.

mmx.md (*mov<mode>_internal_rex64): Use %vmovq for reg<->xmm moves.

	* config/i386/mmx.md (*mov<mode>_internal_rex64): Use %vmovq for
	reg<->xmm moves.
	(*mov<mode>_internal): Merge with *mov<mode>_internal_avx.
	(*movv2sf_internal_rex64): Use %vmovq for reg<->xmm moves.  Merge
	with *movv2sf_internal_rex64_avx.
	(*movv2sf_internal): Merge with *movv2sf_internal_avx.
	* config/i386/i386.md (*movdi_internal_rex64) <TYPE_SSEMOV>:
	Use %v prefix in insn mnemonic to handle TARGET_AVX.
	(*movdi_internal): Add "isa" attribute.  Use "maybe_vex" instead of
	"vex" in "prefix" attribute calculation.
	(*movdf_internal): Output AVX mnemonics.  Add "prefix" attribute.

From-SVN: r173265