> LLVM/GCC target fixed ISA devices. Even GPUs can be represented in this paradigm of having a core set of instructions and registers for SIMD/SMT. What FPGA or

> LLVM/GCC target fixed ISA devices. Even GPUs can be represented in this paradigm of having a core set of instructions and registers for SIMD/SMT. What FPGA or random ASIC could LLVM front-end? How do you go from LLVM-IR to something that can live in an FPGA? You completely missed my point, which was not that RTL and an ISA are comparable in any way but that many of the target codegen backends for both those compilers were contributed by the owners of the ISAs themselves. I said that in response to your claim that you need to own the whole stack to "change the status quo". You don't, you just (mighty big just) need to present a compelling enough value proposition in your stack for the device manufacturers to contribute the remainder of the stack.