[LLVMdev] debug metadata for variable length arrays ?

[sebastien deldon (PGI)]

Is there any debug metadata to use for variable length arrays:

I picked this C example:

int vla(int n)
{
    int aaa[n][n+3];
    int i, j ;

    for (i=0 ; i<n; i++)
        for (j=0; j<n+3;  j++)
            aaa[i][j] = (i+j*n)%1023;
    return aaa[n-1][0];
}

int main(int argc, char** argv)
{
    return vla(argc+5);
}

How do  I express range for 'aaa' array ?
I would need this for Fortran like languages where bounds can be defined as:

SUBROUTINE foo(x_min,x_max,y_min,y_max,                &
                            aaa &
                              )

  IMPLICIT NONE

  INTEGER :: x_min,x_max,y_min,y_max
  REAL(KIND=8), DIMENSION(x_min-2:x_max+2,y_min-2:y_max+2) :: aaa
...

Any advice on how to use debug metadata to generate DWARF for those case is welcome.

Seb

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