Updating MIR Language Reference to include new syntax for symbols and physregs.

External symbols now get the sigil '&' while physical registers get the sigil
'$' for their prefix.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@327276 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed