[mips] Small update to the implementation of eh.return for Mips.

This patch initializes t9 to the handler address, but only if the relocation
model is pic. This handles the case where handler to which eh.return jumps 
points to the start of the function.

Patch by Sasa Stankovic.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178588 91177308-0d34-0410-b5e6-96231b3b80d8
Formatting.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178589 91177308-0d34-0410-b5e6-96231b3b80d8
Use yaml::IO in yaml2obj.cpp.

The generic structs and specializations will be refactored when obj2yaml is
changed to use yaml::IO.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178593 91177308-0d34-0410-b5e6-96231b3b80d8