引用:
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作者flatmode
聽說x86-64也會大改加入更多integer register(16 to 32)
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x86-64是用rex prefix,除非換掉不用此prefix要不然該prefix就是16個general purpose register，可以讓原本mov指令支援rax~r15
Intel® Architecture Instruction Set Extensions Programming Reference 裡也只提到32 SIMD Register Support
AVX-512 instructions also support for 32 SIMD registers in 64-bit mode (XMM0-XMM31, YMM0-YMM31 and ZMM0-ZMM31). The number of available vector registers in 32-bit mode is still 8.所以是xmm ymm zmm增加數量