ART: Fix the simplifier for add/sub

Instruction simplifier for add/sub should not proceed with floats
because that might cause the incorrect behavior with signed zero.

Change-Id: If0c9bf3931bcbf96b0814f8605a86997aea37145
Signed-off-by: Serguei Katkov <serguei.i.katkov@intel.com>
4 files changed