* rtl.h (simplify_gen_relational): Add cmp_mode parameter.
	* simplify-rtx.c (simplify_gen_relational): Likewise.

	* simplify-rtx.c (simplify_replace_rtx): Handle relationals and MEMs.

	* i386.h (VALID_SSE_REG_MODE): Accept MMX modes if SSE2
	* i386.md (movsi_1, movdi2, movdi_1_rex64): Handle SSE2 moves.

	* i386.md (negsf2, negdf2, abssf2, absdf2): Force operands to
	registers in SSE case; fix handling of the immediates.
	(negsf2_ifs, abssf2_ifs): Tweak constraints; require
	operands to be in regsiters before reload.
	(negdf2_ifs, absdf2_ifs): Likewise; disable for 64bit
	(negdf2_ifs_rex64, absdf2_ifs_rtx64): New.
	(abstf,absxf,negtf,negxf splitters): Compute
	properly the regnum for x86_64.
	(avsdf2_if_rex64): New.

From-SVN: r41664