rohan% simple -p texp0
in     simple.c
in  InitSemantics
out INITSemantics
in  NULLLIST
out NULLLIST
in  PushId
out PushId
in  IdToAddr
in     CheckStack
out    CheckStack
out IdToAddr
in  PushInt
out PushInt
in  IconstReduce
in     CheckStack
out    CheckStack
out IconstReduce
in  Assign
in     CheckStack
out    CheckStack
out Assign
in  MergeStmts
in     CheckStack
out    CheckStack
out MergeStmts
in  PushId
out PushId
in  IdToAddr
in     CheckStack
out    CheckStack
out IdToAddr
in  AddrToPrimary
in     CheckStack
out    CheckStack
out AddrToPrimary
in  CreateActParam
in     CheckStack
out    CheckStack
out CreateActParam
in  Call
in     CheckStack
out    CheckStack
out Call
in  MergeStmts
in     CheckStack
out    CheckStack
out MergeStmts
in  PushId
out PushId
in  IdToAddr
in     CheckStack
out    CheckStack
out IdToAddr
in  PushId
out PushId
in  IdToAddr
in     CheckStack
out    CheckStack
out IdToAddr
in  AddrToPrimary
in     CheckStack
out    CheckStack
out AddrToPrimary
in  Operator
out Operator
in  PushInt
out PushInt
in  IconstReduce
in     CheckStack
out    CheckStack
out IconstReduce
in  Operator
out Operator
in  PushInt
out PushInt
in  IconstReduce
in     CheckStack
out    CheckStack
out IconstReduce
in  Operator
out Operator
in  PushId
out PushId
in  IdToAddr
in     CheckStack
out    CheckStack
out IdToAddr
in  AddrToPrimary
in     CheckStack
out    CheckStack
out AddrToPrimary
in  DoArithOp
in     CheckStack
out    CheckStack
out PERFORMOP
in  DoArithOp
in     CheckStack
out    CheckStack
out PERFORMOP
in  DoArithOp
in     CheckStack
out    CheckStack
out PERFORMOP
in  Assign
in     CheckStack
out    CheckStack
out Assign
in  MergeStmts
in     CheckStack
out    CheckStack
out MergeStmts
in  PushId
out PushId
in  IdToAddr
in     CheckStack
out    CheckStack
out IdToAddr
in  AddrToPrimary
in     CheckStack
out    CheckStack
out AddrToPrimary
in  CreateActParam
in     CheckStack
out    CheckStack
out CreateActParam
in  Call
in     CheckStack
out    CheckStack
out Call
in  MergeStmts
in     CheckStack
out    CheckStack
out MergeStmts
in  Done
in     CheckStack
out    CheckStack
out Done


From codegen.c - DisplayRegs() marks used registers

Register: 0 1 2 3 4 5 6 7 8 9 
          - - - - - - - - - - 
Used = x:                    

in  AddStringConstant
out AddStringConstant
COMPILATION COMPLETE
out    simple.c