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

[Sagar Thakur]

Hi @samsonov,

Test case TypeCheck/misaligned.cpp uses a 48-bit address in one of its checks.
To make this test case pass for mips64 I need to use a 40-bit address.
Should I submit this change along with this patch or separately ?

http://reviews.llvm.org/D6320