[llvm] r276510 - [LoopUnrollAnalyzer] Handle out of bounds accesses in visitLoad

[Hans Wennborg via llvm-commits]

r276688.

Thanks,
Hans

On Mon, Jul 25, 2016 at 1:51 PM, David Majnemer
<david.majnemer at gmail.com> wrote:
> I think so.
>
> On Mon, Jul 25, 2016 at 4:43 PM, Hans Wennborg <hans at chromium.org> wrote:
>>
>> The PR reproduces on 3.9 as well. Should we merge this?
>>
>> On Fri, Jul 22, 2016 at 7:56 PM, David Majnemer via llvm-commits
>> <llvm-commits at lists.llvm.org> wrote:
>> > Author: majnemer
>> > Date: Fri Jul 22 21:56:49 2016
>> > New Revision: 276510
>> >
>> > URL: http://llvm.org/viewvc/llvm-project?rev=276510&view=rev
>> > Log:
>> > [LoopUnrollAnalyzer] Handle out of bounds accesses in visitLoad
>> >
>> > While we handed loads past the end of an array, we didn't handle loads
>> > _before_ the array.
>> >
>> > This fixes PR28062.
>> >
>> > N.B. While the bug in the code is obvious, I am struggling to craft a
>> > test case which is reasonable in size.
>> >
>> > Modified:
>> >     llvm/trunk/lib/Analysis/LoopUnrollAnalyzer.cpp
>
>