Displaying 2 results from an estimated 2 matches for "99d7089e".
2013 Aug 22
0
[LLVMdev] scev questions
On 22 August 2013 16:00, Eugene Toder <eltoder at gmail.com> wrote:
> On Thu, Aug 22, 2013 at 6:40 PM, Nick Lewycky <nlewycky at google.com> wrote:
>
>> It's a known limitation, see ScalarEvolution.cpp:5568.
>>
>> The fundamental problem is that len in your example could be (unsigned)
>> -1, -2 or -3, in which case your loop is infinite.
>>
>
2013 Aug 22
2
[LLVMdev] scev questions
On Thu, Aug 22, 2013 at 6:40 PM, Nick Lewycky <nlewycky at google.com> wrote:
> It's a known limitation, see ScalarEvolution.cpp:5568.
>
> The fundamental problem is that len in your example could be (unsigned)
> -1, -2 or -3, in which case your loop is infinite.
>
Unless I'm missing something, if len is -1 (or otherwise less than 0) the
loop has 0 trip count. Did