Fix a MOV instruction in Optimizing's x86-64 code generator.

Use `movl' instead of `movw' to store a 32-bit immediate
(integer or reference) into a field.

Also fix art::Location::RegisterOrInt32LongConstant to
properly handle non-long constants.

Change-Id: I34c6ec8eaa1632822a31969f87c9c2d6c5b96326
5 files changed