Instruction compression dates at least to MIPS16, 1996 [1]. Macro-op fusion dates at least to the Pentium M, to 2003 [2]. These are old ideas. [1] https://en.w

Instruction compression dates at least to MIPS16, 1996 [1]. Macro-op fusion dates at least to the Pentium M, to 2003 [2]. These are old ideas. [1] https://en.wikipedia.org/wiki/MIPS_architecture https://en.wikipedia.org/wiki/MIPS_architecture [2] https://www.agner.org/optimize/microarchitecture.pdf https://www.agner.org/optimize/microarchitecture.pdf