lowerMSABinaryIntr, lowerMSABinaryImmIntr, lowerMSABranchIntr,
and lowerMSAUnaryIntr were trivially small functions. Inlined them into
their callers.
lowerMSASplat now takes its callers SDLoc instead of making a new one.
No functional change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191503 91177308-0d34-0410-b5e6-96231b3b80d8