On Thu, Jul 10, 2014 at 05:12:53PM +0200, Richard Biener wrote:
> The following makes sure we fold the reads from string constants
> created from folding memcpy (&foo, &string_cst[0], ...) to
> eventually create similar code as if that memcpy folding wasn't
> done (move-by-pieces).
>
> Bootstrapped and tested on x86_64-unknown-linux-gnu.
>
> Comments?
>
> (yeah, those native_encode_expr improvement would be really nice,
> eventually for a slightly different interface, native_encode_expr_part)
Don't think you need a new function for that, just add an optional argument
to native_encode_expr, and propagate it to native_encode_string, which would
if the new bool arg is true not do:
if (total_bytes > len)
return 0;
but if total_bytes > len set total_bytes to len instead.
Or, isn't your code only handling STRING_CSTs and nothing else?
Then perhaps just export native_encode_string too and add the optional
argument to that.
Jakub
