[patch] Speed up dwarf2_frame_find_fde

[Andreas Schwab]

ppluzhnikov@google.com (Paul Pluzhnikov) writes:

> +static int
> +bsearch_cie_cmp (const void *key, const void *element)
> +{
> +  ULONGEST cie_pointer = *(ULONGEST *) key;
> +  struct dwarf2_cie *cie = *(struct dwarf2_cie **) element;
> +  return cie_pointer - cie->cie_pointer;

This can overflow.

> +static int
> +qsort_fde_cmp (const void *a, const void *b)
> +{
> +  struct dwarf2_fde *aa = *(struct dwarf2_fde **)a;
> +  struct dwarf2_fde *bb = *(struct dwarf2_fde **)b;
> +  if (aa->initial_location == bb->initial_location)
> +    /* Put eh_frame entries after debug_frame ones.  */
> +    return aa->eh_frame_p - bb->eh_frame_p;
> +
> +  return aa->initial_location - bb->initial_location;

Likewise.

Andreas.

-- 
Andreas Schwab, schwab@redhat.com
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