Implement Concatenate() and Insert() for Int2.

Change-Id: I2f5bbf0cab904a9500a6219bd6a218cb877611fa
Reviewed-on: https://swiftshader-review.googlesource.com/3142
Reviewed-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <capn@google.com>
Tested-by: Nicolas Capens <capn@google.com>
2 files changed