[PATCH] [MSan] [MIPS] Adding support for MIPS64

[Mohit Bhakkad]

>>! In D5906#36, @kcc wrote: 
> msan on 32 bit will have very limited applicability due to limited address space. 
> Remember, the application will have only < 1Gb of RAM available to it.
> Supporting msan on 32-bit is an additional maintenance cost with little to not benefit, at least where I see it. 
> Do you want msan on 32-bit because there are MIPS customers who really need it and can't use 64-bit, 
> or just for completeness? 

We are aware of the limitation of MSan 32bit however there are existing customers of MIPS32 which we think might be potential users of MSAN 32bit.

http://reviews.llvm.org/D5906