On 3/23/07, Andrew Pinski <[EMAIL PROTECTED]> wrote:
On 23 Mar 2007 05:01:00 -0000, spark at gcc dot gnu dot org
<[EMAIL PROTECTED]> wrote:
> The problematic STRIP_SIGN_NOPS() call is from fold_unary()
> which is called from try_combine_conversion() in tree-ssa-pre.c.
>
> STRIP_SIGN_NOPS() is called with the expression:
No, STRIP_SIGN_NOPS is correct, just fold_unary is incorrect in its
folding. It should have called fold_convert on the expression if the
types are different and it is a constant.
Ok, the real issue is that we call fold with
NOP_EXPR<NOP_EXPR<INTEGER_CST>> instead of just NOP_EXPR<INTEGER_CST>
so you have to figure out where we should fold the first NOP_EXPR
instead of that patch.
-- Pinski
