Re: Retargetable Compiler Environment for DSPs?

Oliver Wahlen <oliver.wahlen@post.rwth-aachen.de> wrote:
>What is still
>missing is a way to generate a compiler or at least compiler
>components for DSPs.


    Compilers that optimizes for VLIW, software pipelining and SIMD will
    probably have different high level optimization phases. For
    example, SIMD and VLIW compilers use a technique for "strip mining"
    loops to target the multiple functional units. This is usually done
    in the IR, rather than at the code generation stage. Software
    pipelining requires a different IR optimization phase. In the same
    way, conditional execution (a la IA64) requires special
    optimizations that may be reflected in the intermediate.


    I believe that the way to target multiple DSP architectures is to
    build a modular compiler. This compiler would allow optimization
    components to be plugged in for different architectures. But each
    component would have to be crafted for the particular architecture.


    Ian Kaplan
    iank@bearcave.com

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