Optimizing x86: Fix VisitArraySet for FP value

Instruction generator expects to see FP value in XMM register,
so update location builder to follow this.

Change-Id: Idca4bb5cdb59249c77fcc6f76cdfcaba47222b3d
Signed-off-by: Serguei Katkov <serguei.i.katkov@intel.com>
2 files changed