PR other/8202
	* i386.c (ix86_init_mmx_sse_builtins, ix86_expand_builtin): Define and
	expand __builtin_ia32_pslldqi128 and __builtin_ia32_psrldqi128.
	* i386.h (IX86_BUILTIN_PSLLDQI128, IX86_BUILTIN_PSRLDQI128): New.
	* xmmintrin.h (_mm_srli_si128, _mm_slli_si128): New.

	* testsuite/gcc.dg/i386-sse-3.c: Add tests for _mm_srli_si128 and
	_mm_slli_si128.

From-SVN: r58338