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Re: fold: &a[i1] + c * i2 -> &a[i1 + i2] messing up types
On Wed, Feb 09, 2005 at 02:06:18PM +0100, Zdenek Dvorak wrote:
> however the cast should be done using fold_convert:
>
> tem = try_move_mult_to_index (TREE_TYPE (arg0), PLUS_EXPR, arg0, arg1);
> if (tem)
> return fold (fold_convert (type, tem));
Actually, shouldn't that be
return fold_convert (type, fold (tem));
instead?
Calling fold on fold_convert result is pointless, as it is already folded.
But if the arg passed to fold_convert is not already folded, we might miss
some simplifications.
Jakub