[mips] Correct alignment of vectors passed in varargs for the O32 ABI.
Summary:
Vectors are normally 16-byte aligned, however the O32 ABI enforces a
maximum alignment of 8-bytes since the base of the stack is 8-byte aligned.
Previously, this was enforced on the caller side, but not on the callee side.
This fixes the output of OpenCL's printf when given vectors.
Reviewers: atanasyan
Reviewed By: atanasyan
Subscribers: llvm-commits, pekka.jaaskelainen
Differential Revision: http://reviews.llvm.org/D5433
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@218248
91177308-0d34-0410-b5e6-
96231b3b80d8