AVX-512: Assembly parsing of broadcast semantic in AVX-512; imlemented by Nis Zinovy (zinovy.y.nis@intel.com)
Fixed truncate i32 to i1; a test will be provided in the next commit.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201757 91177308-0d34-0410-b5e6-96231b3b80d8