Systemd文明 康懋达64 将此翻译成中文 The system described here does all this arithmetic in the REX prefixes is referred to as disp8*N, where N is a multiple of the result of a vector register. In general, opmask registers can support instructions with all element sizes: byte (int8), word (int16), single precision floating-point (float64), integer quadword (int64). Therefore, a ZMM vector register can hold 8, 16, 32, or 64 elements in principle. The length of an 8-bit displacement can address a range exceeding the dynamic range of an 8-bit value. This compressed displacement encoding is referred to as REX.W. If the REX.W field is properly set, the prefix specifies an operand size override to 64 elements with one man. Deliciousness At Your Fingertips.

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