Note: This relands #134985 with a fix. Original PR resulted in test fail
for msan builds.
Fix: Initialize MipsSubtarget::ProcImpl to ProcImpl::CPU::Others
[MIPS] Reland Add FeatureMSA to i6400 and i6500 cores (#134985)
- Enable 'FeatureMSA' for MIPS i6400 and i6500 cpu.
- Enable -mmsa option if mcpu is set to either i6400 or i6500
- added clang driver test to validate msa feature
- added llvm codegen test to validate msa instructions for cpu i6500 and
i6400
MIPS i6400 and i6500 cores implements and enables MSA (MIPS SIMD
ARCHITECTURE) by default.
418c1d8a44