[X86, inline-asm] Check that the input size is correct for constraints R, q, Q,
S, D, A, y, x, f, t, and u.

This is a follow-up patch for r167717.

rdar://problem/11846140
rdar://problem/17476970


git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@217994 91177308-0d34-0410-b5e6-96231b3b80d8