[PATCH] [mips][FastISel] Handle functions which return i1, i8 or i16.

[Vasileios Kalintiris]

In http://reviews.llvm.org/D6765#162473, @dsanders wrote:

> You may be able to re-use the calling convention test at test/CodeGen/Mips/cconv/return.ll if support for loads is good enough.


There's not any test for FastISel outside from the `test/CodeGen/Mips/Fast-ISel` directory. That's why I added the tests in the Fast-ISel directory. In the future, I would like to rename the `test/CodeGen/Mips/Fast-ISel/retabi.ll` file to `ret.ll` as we check essentially for the `ret` IR instruction.


http://reviews.llvm.org/D6765

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