On 07/18/2017 01:36 PM, Segher Boessenkool wrote:
> ... if it is an IOR with a constant with all bits set in the mode
> that is truncated to, for example. Handle that case.
>
> With this patch the problematic situation for the PR81423 testcase
> isn't even reached; but the next patch fixes that anyway.
>
> Bootstrapped and tested on powerpc64-linux {-m32,-m64} and on
> x86_64-linux. Is this okay for trunk?
>
>
> Segher
>
>
> 2017-07-18 Segher Boessenkool <seg...@kernel.crashing.org>
>
> PR rtl-optimization/81423
> * simplify-rtx.c (simplify_truncation): Handle truncating an IOR
> with a constant that is -1 in the truncated to mode.
OK. A testcase would be advisable :-)
jeff
