RuntimeLibcalls: Add a few libm entries from TargetLibraryInfo#167049

arsenm wants to merge 1 commit intousers/arsenm/runtime-libcalls/add-vector-library-functionsllvm/llvm-project:users/arsenm/runtime-libcalls/add-vector-library-functionsfrom

users/arsenm/runtime-libcalls/add-libm-functions-from-targetlibraryinfollvm/llvm-project:users/arsenm/runtime-libcalls/add-libm-functions-from-targetlibraryinfoCopy head branch name to clipboard