On 12/04/2017 03:40 AM, Richard Biener wrote:
> On Mon, Dec 4, 2017 at 6:55 AM, Jeff Law wrote:
>>
>> As I brought my patches for pr78496 up to the tip of the trunk I noticed
>> a couple testsuite regressions with -fsanitize=unreachable tests.
>>
>> The problem is VRP and EVRP analysis/optimizatio
On Mon, Dec 4, 2017 at 6:55 AM, Jeff Law wrote:
>
> As I brought my patches for pr78496 up to the tip of the trunk I noticed
> a couple testsuite regressions with -fsanitize=unreachable tests.
>
> The problem is VRP and EVRP analysis/optimization could exploit
> __builtin_unreachable to narrow the
As I brought my patches for pr78496 up to the tip of the trunk I noticed
a couple testsuite regressions with -fsanitize=unreachable tests.
The problem is VRP and EVRP analysis/optimization could exploit
__builtin_unreachable to narrow the range of an object, then use that
narrowed range to elimin