LEAQ    (2*4*80+32)(SP), R15 \
	PRECALC \ // Precalc WK for first 2 blocks
	XCHGQ   R15, R14 \
loop: \  // this loops is unrolled
	CMPQ    R10, R8 \ // we use R8 value (set below) as a signal of a last block
	JNE	begin \
	VZEROUPPER \
	RET \
begin: \
	CALC_0 \
	CALC_1 \
	CALC_2 \
	CALC_3 \
	CALC_4 \
	CALC_5 \
	CALC_6 \
	CALC_7 \
	CALC_8 \
	CALC_9 \
	CALC_10 \

var isCondJmp = [maxOp + 1]bool{
	JA:  true,
	JAE: true,
	JB:  true,
	JBE: true,
	JE:  true,
	JG:  true,
	JGE: true,
	JL:  true,
	JLE: true,
	JNE: true,
	JNO: true,
	JNP: true,
	JNS: true,
	JO:  true,
	JP:  true,
	JS:  true,
}

// isLoop records the loop operators.
var isLoop = [maxOp + 1]bool{
	LOOP:   true,

	// add current hash values with previously saved
	PADDD		abefSave, state0
	PADDD		cdghSave, state1

	// advance data pointer; loop until buffer empty
	ADDQ		$64, dataPtr
	CMPQ		numBytes, dataPtr
	JNE		roundLoop

	// write hash values back in the correct order
	PSHUFD		$0x1b, state0, state0		// FEBA
	PSHUFD		$0xb1, state1, state1		// DCHG
	VMOVDQA		state0, m4
	PBLENDW		$0xf0, state1, state0		// DCBA

		// TODO: have these return flags instead of bool.  The current system generates:
		//    CMPXCHGQ ...
		//    SETEQ AX
		//    CMPB  AX, $0
		//    JNE ...
		// instead of just
		//    CMPXCHGQ ...
		//    JEQ ...
		// but we can't do that because memory-using ops can't generate flags yet
		// (flagalloc wants to move flag-generating instructions around).