AVX

A data-rich historical analysis of x86 SIMD from MMX to AVX-512, emphasizing the engineering tradeoffs, competitive dynamics, and the resulting fragmentation and partial unification efforts that shape today’s vector landscape.

Reverse-engineering the Intel 8087 reveals an eight-entry, 80-bit stack with push/pop rules, a carry-lookahead adder and toggle-based increment/decrement, plus a dense, multi-layer RAM-like register file and a semi-analog microcode ROM; the design produced stack overflow/underflow pitfalls that affected compiler and OS support, and was eventually superseded by SSE/AVX.