ROUND2(CX,DX,AX,BX,12,0x676f02d9,14);
	ROUND2(BX,CX,DX,AX, 5,0x8d2a4c8a,20);

	MOVL	CX,		R9

// Uses https://github.com/animetosho/md5-optimisation#h-function-re-use

#define ROUND3FIRST(a, b, c, d, index, const, shift) \
	MOVL	d,		R9; \
	XORL	c,		R9; \
	XORL	b,		R9; \
	ADDL	$const,	a; \
	ADDL	R8,		a; \
	MOVL	(index*4)(SI),R8; \
	ADDL	R9,		a; \
	ROLL	$shift,		a; \
	ADDL	b,		a