* i386.md (attribute mode): Add "TI".
	(movsf_1): Add pxor support; remove constant propagation splitter.
	(movdf_integer): Likewise.
	(movdf_nointeger): Likewise.
	(movxf constant prop splitter): Handle all modes; update for SSE.
	* i386.h (CONST_DOUBLE_OK_FOR_LETTER): Add 'H' for SSE constants.
	* i386.c (standard_80387_constant_p): Rewrite.
	(standard_sse_constant_p): New.
	* i386-protos.h (standard_sse_constant_p): New.

From-SVN: r40132