Minor fix in LoopStrengthReduce

[Quentin Colombet via llvm-commits]

Hi Jonas,

Looks reasonable.

Cheers,
-Quentin
> On Jul 27, 2017, at 2:02 AM, Jonas Paulsson <paulsson at linux.vnet.ibm.com> wrote:
> 
> Hi Quentin and Uli,
> 
> this is a very minor fix in LSR that I kept separate from the other changes. It seemed right, but had nearly no effect on output, so I wouldn't say it's really necessary - just 3-4 loops changed on SPEC (3 slightly better).
> 
> /Jonas
> 
> <LSR_FixupOffs.patch>