What caused/started the "CISC vs RISC" in the 1980s?

• movfuscator

  82 9,013 0.0 C

  The single instruction C compiler

If you really want to, you can write x86 programs using only the mov instruction or some other suitable subset. It'll just lead to massive code size. Normal programs already overflow my 5800x3d's 100MB cache and a small ISA would be even worse.

• compiler-explorer

  190 15,138 9.9 TypeScript

  Run compilers interactively from your web browser and interact with the assembly

  

Which FP instructions are you referring to? Can you show me an example of a C/C++ program that uses them (e.g. on godbolt)?

• InfluxDB

  www.influxdata.com sponsored

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• vroom

  17 443 5.0 Verilog

  VRoom! RISC-V CPU (by MoonbaseOtago)

At the moment the Apple M1/M2 are the king of wide decode. Within a couple of years you will see equally wide decode and execute of RISC-V from companies such as Rivos, or indeed open source and GPL'd projects such as VROOM! (https://github.com/MoonbaseOtago/vroom)

Suggest a related project