[X86] Remove extra spaces from MPX instruction asm strings. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@257298 91177308-0d34-0410-b5e6-96231b3b80d8
[X86] Use PS instead of TB for instructions that have PD/XS/XD variations. Use OpSize32 on an instruction that has an OpSize16 variant. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256918 91177308-0d34-0410-b5e6-96231b3b80d8
X86-MPX: Implemented encoding for MPX instructions. Added encoding tests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239403 91177308-0d34-0410-b5e6-96231b3b80d8