Subzero, MIPS32: Intrinsic call Bswap for i16, i32 and i64

Implements intrinsic call llvm.bswap for i16, i32 and i64

R=stichnot@chromium.org

Review URL: https://codereview.chromium.org/2368343003 .

Patch from Srdjan Obucina <Srdjan.Obucina@imgtec.com>.
4 files changed