* mmintrin.h (__m64): typedef it to v2si.
	(_mm_cvtsi32_si64, _mm_cvtsi32_si64_mm_sll_pi16,
	_mm_sll_pi32, _mm_sll_pi64, _mm_slli_pi64, _mm_sra_pi16,
	_mm_sra_pi32, _mm_srl_pi16, _mm_srl_pi32, _mm_srl_pi64,
	_mm_srli_pi64, _mm_and_si64, _mm_andnot_si64,
	_mm_or_si64, _mm_xor_si64): Add neccesary casts.
	* xmmintrin.h (_mm_setzero_si64): Likewise.

	* i386.h (ALIGN_MODE_128): Update comment; add missing modes
	(SSE_REG_MODE_P, MMX_REG_MODE_P): New macros.

	PR target/7693
	Patch by Shawn Wagner
	* mmintrin.h: Replace pi64 by si64.

From-SVN: r58306