Displaying 2 results from an estimated 2 matches for "efd655af".
2013 Aug 22
0
[LLVMdev] scev questions
...int_max-3, sdiv(m,
4))".
I've proposed this previously:
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20120917/151250.html
Nick
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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