Dynamic allocation of SOA type.

[Alex Yuan]

Hi,

Can anyone kindly let me know how I can dynamically allocate SOA types?

Following is an example test.ispc:

struct anything {

    int start;

    int end;

};

static void

process_items(uniform const float input[],

              uniform int height, uniform int width,

              soa<8> anything a[])

{

}

export void

process_ispc(uniform const float input[],

             uniform int height, uniform int width)

{

    uniform const int length = height * width;

    soa<8> anything * uniform a = uniform new soa<8> anything[length];

    process_items(input, height, width, a);

    delete a;

}

This is the command line and error message:

$ ../bin/ispc.exe --arch=x86 --target=avx2-i32x8 -o test.obj test.ispc
Assertion failed: castIsValid(getOpcode(), S, Ty) && "Illegal BitCast", file c:\iusers\aneshlya\llvm_release\llvm-8.0\llvm\lib\ir\instructions.cpp, line 3268

I was using a prebuilt v1.12.0 Windows build if that matters.

Regards,

Alex

[Dmitry Babokin]

Hi Alex,

soa<> support is quite buggy, this is yet another problem in the collection of soa<> problems. We need either to solve them at once or deprecate soa<> support. Could you please file an issue with this problem?

Dmitry.

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[Brian]

My 2 cents: I'd suggest working with "varying float" and "varying anything" rather than 'soa<8> float' and 'soa<8> anything'.

-Brian

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