Small refactor of MIN/MAX compiler code.

Integrate instruction code generation and location creation with
HandleBinaryOp. Code generation has been improved for constant
inputs 0, 1 and -1.

Test: 679-checker-minmax
Test: test-art-host, test-art-target.

Change-Id: Ib34eb8a4b29d22a2491d21656e1f64011ef9f986
4 files changed