prefetch_amd64.go

//+build !appengine

package prefetch

func prefetchBS(b [][]byte)

prefetch_amd64.s

// func prefetchBS(b [][]byte)
TEXT ·prefetchBS(SB), 7, $0
	MOVQ  b(FP), SI       // SI: &b
	MOVQ  b_len+8(FP), DX // DX: len(b)
	TESTQ DX, DX
	JZ    end

loop:
	MOVQ       (SI), AX // AX: b[0]
	PREFETCHT0 (AX)     // Prefetch first entry
	ADDQ       $24, SI  // Move to next entry in b
	SUBQ       $1, DX   // b--
	JNZ        loop

end:
	RET

prefetch_other.go

//+build !amd64 appengine

package prefetch

func prefetchBS(b [][]byte) {
	// doest nothing on other platforms
}